Toshiba e-studio182 Service Manual Download | Manualshive

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© 2009 TOSHIBA TEC CORPORATION All rights reserved

e-STUDIO182/212/242

LASER OPTICAL UNIT

7 - 5

7.3

Laser Diode Control Circuit

This equipment uses an AlGaAs type semiconductive laser with 5 mW of optical output power rating.
This laser emits a beam in a single transverse mode in approx. 785 nm wavelength. PIN diode for
monitoring optical output in this laser controls the laser intensity.
The relation between the forward current and optical output of a semiconductive laser is as shown
below. Beam emission starts when the forward current exceeds a threshold current, and then the laser
outputs a monitor current which is proportionate to the optical output. Since semiconductive lasers have
an individual variability in their threshold current and monitor current, the optical output needs an
adjustment to be maintained at a certain value.
The optical output of a semiconductive laser decreases as the laser temperature rises. Therefore APC
(Auto Power Control) needs to be performed to maintain a constant optical output.

Fig. 7-7

A block diagram of the semiconductive laser control circuit is shown below. The semiconductive laser
performs a monitor efficiency regulation (a process to control a monitor current for beam emission
amount). The initial beam emission is adjusted to be approx. 1.6 mW (240 µW on the drum surface).
The voltage of the monitor output, which has been regulated by this adjustment, is then fed back to a
laser power comparison circuit.
In the laser power comparison circuit, this voltage fed back and a laser power voltage set for the control
circuit are compared for every scanning. As the result of this, a laser driver circuit increases its forward
current when the laser power is insufficient and decreases it when the laser power is excessive to
maintain a constant optical output.

Fig. 7-8

Threshould current

Forward current
Monitor current

Current (mA)

Optical Output

( mW

)

Low temp.

High temp.

Regulation

Monitor output

Monitor efficiency

regulation circuit

Laser power

comparison

circuit

Laser driver

circuit

Semiconductive laser

Constant
optical output

Power source

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Summary of Contents for e-studio182

Page 1: ...SERVICE MANUAL MULTIFUNCTIONAL DIGITAL SYSTEMS e STUDIO182 212 242 Model DP1830 DP2120 DP2420 Publish Date December 2009 File No SME09001500 R091021I2800 TTEC Ver00_2009 12 ...

Page 2: ... S and other countries PostScript is a trademark of Adobe Systems Incorporated NOVELL NetWare and NDS are trademarks or registered trademarks of Novell Inc Mylar is a registered trademark of DuPont Teijin Films U S Limited Partnership Molykote is a registered trademark of Dow Corning Corporation FLOIL is a registrated treadmark of Kanto Kasei Ltd CORPORATION TopAccess is a trademark of Toshiba Tec...

Page 3: ... copying operation keep a minimum clearance of 80 cm 32 on the left 80 cm 32 on the right and 10 cm 4 on the rear The equipment shall be installed near the socket outlet and shall be easily accessible Be sure to fix and plug in the power cable securely after the installation so that no one trips over it When the equipment is used after the option is removed be sure to install the parts or the cove...

Page 4: ...ing operating sections such as gears belts pulleys fans and laser beam exit of the laser optical unit Be careful when removing the covers since there might be the parts with very sharp edges underneath When servicing the equipment with the power turned ON be sure not to touch live sections and rotating operating sections Avoid exposing your eyes to laser beam Use designated jigs and tools Use reco...

Page 5: ... CAUTION HOT CAUTION HIGH VOLTAGE CAUTION LASER BEAM etc to see if there is any dirt on their surface and if they are properly stuck to the equipment For UC For EU For others Certification label For UC Identification label Warning for high temperature areas fuser unit Warning for high temperature areas ventilation holes Explanatory label ...

Page 6: ...s including lithium batteries follow the relevant local regulations or rules Caution Dispose of used batteries and IC RAMs including lithium batteries according to this manual Attention Se débarrasser de batteries et IC RAMs usés y compris les batteries en lithium selon ce manuel Vorsicht Entsorgung der gebrauchten Batterien und IC RAMs inclusive der Lithium Batterie nach diesem Handbuch ...

Page 7: ... zu gewährleisten muss ein Abstand von mindestens 80 cm links 80 cm rechts und 10 cm dahinter eingehalten werden Das Gerät ist in der Nähe der Steckdose zu installieren diese muss leicht zu erreichen sein Nach der Installation muss das Netzkabel richtig hineingesteckt und befestigt werden damit nie mand darüber stolpern kann 2 Allgemeine Sicherheitsmassnahmen in bezug auf die Wartung Während der W...

Page 8: ...nscheiben Lüfter und die Laseraustrittsöffnung der optis chen Lasereinheit sicherstellen dass das Gerät sich nicht bedienen lässt Beim Entfernen von Abdeckungen vorsichtig vorgehen da sich darunter scharfkantige Kompo nenten befinden können Bei Wartungsarbeiten am eingeschalteten Gerät dürfen keine unter Strom stehenden drehbaren oder betriebsrelevanten Bereiche berührt werden Nicht direkt in den ...

Page 9: ...ten abziehen CAUTION HOT VORSICHT HEISS CAUTION HIGH VOLTAGE VORSICHT HOCHSPANNUNG CAUTION LASER BEAM VORSICHT LASER usw um sicherzustellen dass sie nicht verschmutzt sind und korrekt am Gerät angebracht sind For UC For EU For others Certification label For UC Identification label Warning for high temperature areas fuser unit Warning for high temperature areas ventilation holes Explanatory label ...

Page 10: ... einschließlich Lithiumakkus sind die einschlägigen nationalen oder regionalen Vorschriften zu befolgen Caution Dispose of used batteries and IC RAMs including lithium batteries according to this manual Attention Se débarrasser de batteries et IC RAMs usés y compris les batteries en lithium selon ce manuel Vorsicht Entsorgung der gebrauchten Batterien und IC RAMs inclusive der Lithium Batterie nac...

Page 11: ...position durch Laser strahlung kommen Die Lasereinheit ist vollständig mit einer Schutzabdeckung versiegelt Solange ausschließlich die Arbeitsschritte der vorgeschriebenen Anleitungen durchgeführt werden tritt der Laserstrahl nicht aus und es besteht keine Gefahr der Laserstrahlung ausgesetzt zu werden Das folgende Laser Warnetikett ist an der Abdeckung vorne rechts angebracht Warnhinweise Setzen ...

Page 12: ......

Page 13: ...cement of PC boards 2 22 2 6 1 MAIN board MAIN 2 22 2 6 2 SRAM board SRAM 2 23 2 6 3 Fuse PC board FUS 2 23 2 6 4 Paper feed controller PC board PFC 2 24 2 6 5 Switching regulator unit PS 2 25 2 6 6 Switching regulator cooling fan M6 2 27 2 7 Removal and Installation of Options 2 28 2 7 1 MR 2020 Automatic Document Feeder ADF MR 3023 Reversing Automatic Document Feeder RADF 2 28 2 7 2 MY 1027 Pape...

Page 14: ...nal size detection 6 11 6 6 2 Process of detection of original size 6 12 6 7 Disassembly and Replacement 6 16 6 7 1 Original glass 6 16 6 7 2 Scanner top cover 6 17 6 7 3 Automatic original detection sensor APS sensor 6 18 6 7 4 Scan motor M1 6 18 6 7 5 CIS home position sensor S1 6 20 6 7 6 Platen sensor S2 6 20 6 7 7 CIS unit CIS 6 21 6 7 8 CIS case 6 23 6 7 9 CIS unit drive belt 1 6 24 6 7 10 C...

Page 15: ...9 25 10 DRUM RELATED SECTION 10 1 10 1 General Description 10 1 10 2 Configuration 10 2 10 3 Functions 10 3 10 4 High Voltage Output Control Circuit 10 5 10 4 1 General description 10 5 10 4 2 Description of Operation 10 6 10 5 Drum Temperature Detection Circuit 10 7 10 5 1 General description 10 7 10 5 2 Circuit configuration 10 7 10 6 Temperature Humidity Detection Circuit 10 8 10 6 1 General De...

Page 16: ...nctions 12 3 12 4 Operation 12 5 12 5 Fuser Unit Control Circuit 12 6 12 5 1 Configuration 12 6 12 5 2 Temperature detection section 12 7 12 6 Disassembly and Replacement 12 12 12 6 1 Fuser Exit unit 12 14 12 6 2 Pressure roller unit Fuser roller unit 12 14 12 6 3 Exit roller 12 15 12 6 4 Exit sensor S5 12 16 12 6 5 Separation finger 12 18 12 6 6 Center heater lamp Side heater lamp LAMP1 LAMP2 12 ...

Page 17: ...ly Unit 14 5 14 6 AC Wire Harness 14 6 15 EXTERNAL COUNTERS 15 1 15 1 Outline 15 1 15 2 Signal 15 1 15 2 1 Pin Layout 15 1 15 2 2 Details of the signals 15 2 15 3 Notices 15 3 15 3 1 Setting code 15 3 15 3 2 Setting value change and restrictions when using the totalizer DocuLyzerNW 15 3 15 3 3 Setting value change and restrictions when using the coin controller 15 3 15 3 4 Simultaneous Installatio...

Page 18: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved CONTENTS 6 ...

Page 19: ...riginals are manually placed for single side multiple copying When the value is different among e STUDIO182 212 and 242 the value for e STUDIO212 is shown by and the value for e STUDIO242 is shown by Paper size Drawer Bypass feed PFU PFP Size specified Size not specified Upper drawer Lower drawer A4 B5 LT 18 16 11 16 16 16 A5 R ST R 16 11 16 16 A4 R B5 R LT R 15 5 15 5 11 15 5 15 5 15 5 B4 LG FOLI...

Page 20: ...2 Approx 7 5 sec A4 LT 100 original placed manually Warming up time Approx 25 sec temperature 20 C Multiple copying Up to 999 copies Key in set numbers Reproduction ratio Actual ratio 100 0 5 Zooming 25 to 200 in increments of 1 Resolution Gradation Scanning 600 dpi x 600 dpi Printing Equivalent to 2400 dpi x 600 dpi Gradation 256 steps Eliminated portion Leading edges 3 0 2 0 mm Side trailing edg...

Page 21: ...F RADF Option A3 to A5 R LD to ST R 100 sheets 80 g m2 Stack height 16 mm or less Automatic duplexing unit ADU Option Stackless Switchback type Toner supply Automatic toner density detection supply Toner cartridge replacing method There is a recovered toner supply mechanism Density control Automatic density mode and manual density mode selectable in 7 steps Weight Approx 32 0 kg 70 55 lb for NAD a...

Page 22: ...TUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved SPECIFICATIONS ACCESSORIES OPTIONS SUPPLIES 1 4 Dimensions of the equipment W 600 x D 658 6 x H 462 5 mm See the figure below Fig 1 1 W H D ...

Page 23: ...or s manual 1 pc Operator s manual pocket 1 pc for NAD Power cable 1 pc CD ROM 2 pcs Rubber cap 6 pcs for MJD ASD ASU and SAD 2 pcs for NAD CND AUD TWD KRD and ARD Transfer charger wire cleaner installed inside of the transfer cover 1 pc Drum installed inside of the equipment 1 pc Developer material 1 pc Nozzle 1 pc for NAD Toner cartridge 1 pc Warranty sheet 1 pc for NAD and CND Setup report 1 se...

Page 24: ...x kit GD 1221 and the scanner upgrade kit GA 1201 Platen Cover KA 1650PC PCC Automatic Document Feeder ADF MR 2020 C Reversing Automatic Document Feeder RADF MR 3023 C Paper Feed Unit PFU MY 1027 C Paper Feed Pedestal PFP KD 1022 C Paper Feed Controller PFC GH 1060 C Drawer Module MY 1028 C Automatic Duplexing Unit ADU MD 0103 C Fax Kit GD 1221NA EU AU TW CN KR External Keyboard GJ 1060 C EU KR TW...

Page 25: ...China Toner cartridge PS ZT1810 1 for North America PS ZT1810A 1 for Central and South America PS ZT1810D 1 for Asia PS ZT1810D5k 1 for Asia PS ZT1810C 1 for China PS ZT1810C10k 1 for China PS ZT1810C5k 1 for China PS ZT1810T 1 for Taiwan PS ZT1810T5k 1 for Taiwan PS ZT1810E 1 for Europe PS ZT1810E5K 1 for Europe Developer material D 2320 except for China D 2320C for China ...

Page 26: ...060 Fax Kit GD 1221 Harness Kit GQ 1130 Damp Heater MF 1640 Platen Cover KA 1650PC Automatic Document Feeder ADF MR 2020 Reversing Automatic Document Feeder RADF MR 3023 Automatic Duplexing Unit ADU MD 0103 Paper Feed Controller PFC GH 1060 Paper Feed Unit PFU MY 1027 Network Printer Kit GA 1191 Scanner Upgrade Kit GA 1201 Paper Feed Pedestal PFP KD 1022 Drawer Module MY 1028 ...

Page 27: ...Scanner damp heater thermostat THMO2 A7 Automatic original detection sensor S9 S13 B1 Laser optical unit B2 Polygonal motor M4 C1 Pickup roller C2 Separation claw C3 Paper empty sensor S7 C4 Registration sensor S4 C5 Registration roller E1 Bypass pickup roller E2 Bypass feed roller E3 Bypass separation pad E4 Bypass paper sensor S8 A2 A1 A3 B1 B2 C1 C2 C3 E1 E2 E4 E5 E3 C4 C5 J1 J2 J3 J4 J5 J8 J9 ...

Page 28: ...oner sensor S6 I7 Toner recovery auger I8 Toner recycle auger I9 Drum thermistor THMS4 I10 Drum damp heater DH3 I11 Drum damp heater thermostat THMO3 J1 Fuser roller J2 Pressure roller J3 Fuser roller separation finger J4 Center heater lamp LAMP1 J5 Side heater lamp LAMP2 J6 Center Side Edge thermistor THMS1 2 3 J7 Fuser thermostat THMO1 J8 Exit roller J9 Exit sensor S5 K1 Front cover opening clos...

Page 29: ...Scan motor M2 Toner motor M3 Main motor M5 Exhaust fan M6 Switching regulator cooling fan M7 Exit motor Option M8 ADU motor Option S1 CIS home position sensor S2 Platen sensor SW5 Drawer detection switch CLT1 Registration clutch SOL1 Pickup solenoid SOL2 Bypass pickup solenoid M7 M8 M1 M2 M3 SOL1 SOL2 M6 M5 CLT1 SW5 S2 S1 ...

Page 30: ...2009 TOSHIBA TEC CORPORATION All rights reserved OUTLINE OF THE MACHINE 2 4 2 2 Electric Parts Layout A Scanner control panel Fig 2 3 M1 S12 S13 S11 S9 DH1 S10 DH2 THMO2 S13 S12 S11 S10 S2 S1 CIS HPNL LCD LT series models ...

Page 31: ...2 2009 TOSHIBA TEC CORPORATION All rights reserved e STUDIO182 212 242 OUTLINE OF THE MACHINE 2 5 B Power supply section switches Fig 2 4 SW2 SW3 PS S3 M6 SW1 SW4 ...

Page 32: ...212 242 2009 TOSHIBA TEC CORPORATION All rights reserved OUTLINE OF THE MACHINE 2 6 C Laser optical unit fuser unit toner cartridge section Fig 2 5 S5 M2 M7 CTIF CTRG M4 THMO1 THMS1 THMS2 THMS3 SNS LDR LAMP2 LAMP1 ...

Page 33: ...2 2009 TOSHIBA TEC CORPORATION All rights reserved e STUDIO182 212 242 OUTLINE OF THE MACHINE 2 7 D Developer unit section Fig 2 6 M5 ERS S6 THMS4 DH3 THMO3 FUS ...

Page 34: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved OUTLINE OF THE MACHINE 2 8 E Driving section Fig 2 7 CLT1 M3 MAIN SRAM S4 SOL1 PFC ...

Page 35: ...2 2009 TOSHIBA TEC CORPORATION All rights reserved e STUDIO182 212 242 OUTLINE OF THE MACHINE 2 9 F Drawer section Fig 2 8 S7 SW5 ...

Page 36: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved OUTLINE OF THE MACHINE 2 10 G Bypass unit automatic duplexing unit Fig 2 9 ADU M8 S8 SOL2 ...

Page 37: ...M3 MAIN MOT Main motor Driving the drum developer unit registration roller Pickup roller feed roller cleaner unit Fig 2 7 12 2 M4 M DC POL Polygonal motor Driving the polygonal mirror Fig 2 5 5 13 M5 EXT FAN MOT Exhaust fan Exhausting ozone and cooling down the equipment inside Fig 2 6 11 23 M6 PS FAN MOT Switching regulator cooling fan Cooling down the switching regulator Fig 2 4 5 11 M7 EXIT MOT...

Page 38: ...nce of paper on the bypass tray Fig 2 9 13 101 S9 13 APS 1 3 APS C APS R Automatic original detection sensor Detecting original size S9 only for A4 series models Fig 2 3 9 9 9 19 SW1 MAIN SW Main switch Turning ON OFF of the equipment Fig 2 4 5 4 SW2 ADU COV INTLCK SW ADU cover opening closing interlock switch Controlling cutoff and supply of the 24V voltage by opening closing of the ADU cover Fig...

Page 39: ...S PWA F FUS Fuse PC board FUS board Supplying power to each damp heater Optional for NAD MJD CND model standard for other models Fig 2 6 7 12 PFC PWA F PFC Paper feed controller PC board PFC board Controlling the automatic duplexing unit and paper feed pedestal Option Fig 2 7 7 35 ADU PWA F ADU ADU driving PC board ADU board Controlling the automatic duplexing unit Option Fig 2 9 MD 0103 1 13 Symb...

Page 40: ...he temperature on the drum surface Fig 2 6 21 49 THMO1 THERMO FSR Fuser thermostat Preventing overheating in the fuser unit Fig 2 5 23 5 THMO2 THERMO SCN DH Scanner damp heater thermostat Preventing overheating in the scanner damp heater Optional for NAD MJD CND model standard for other models Fig 2 3 9 20 THMO3 THERMO DRM DH Drum damp heater thermostat Preventing overheating in the drum damp heat...

Page 41: ...humidity sensor Driver D A converter A D converter SoC System controller MAIN board Scan motor Fuser unit Auto toner sensor Developer unit DC High voltage Laser optical unit SNS board Laser beam sensor LDR board Laser diode 8 ASIC I O port Battery Battery SDRAM bus 16 bit CPU bus 16 bit NCU board Download JIG TELBOOK board FAX board MODEM Control panel External keyboard Network printer kit USB con...

Page 42: ...mation and counter value and its backup function are mounted When the MAIN board is replaced attaching this board to the new MAIN board can assume the data of the previous equipment HPNL board This is the board on which each button switch and LEDs on the control panel and the LCD control circuit are mounted CTRG board This is the board on which the IC chip for storing information about the toner c...

Page 43: ...each electric part FUS board This is the board to provide AC electric power for driving the damp heater Optional for NAD MJD CND model standard for other models CIS This is the unit witch performs optical to electrical conversion to convert the light reflected by the original into the electrical signals It consists of a light source LEDs optical system CCD sensor etc PFC board This is the board to...

Page 44: ... Front cover 2 5 2 Inner tray 2 5 3 Left cover 1 Open the front cover 2 Release the upper hinge 3 Take off the front cover while lifting it up Fig 2 12 1 Remove 2 screws and take off the Inner tray Fig 2 13 1 Take off the Inner tray P 2 18 2 5 2 Inner tray 2 Remove 4 screws and take off the left cover Fig 2 14 Front cover Inner tray Left cover ...

Page 45: ... 1 Take off the left cover P 2 18 2 5 3 Left cover 2 Take off the tray rear cover Fig 2 15 1 Take off the front cover P 2 18 2 5 1 Front cover 2 Pull out the toner cartridge 3 Open the ADU cover 4 Remove 2 screws and take off the front right cover Fig 2 16 1 Remove 1 screw and take off the front upper cover Fig 2 17 Tray rear cover Front right cover Front upper cover ...

Page 46: ...side 4 Remove 1 screw and take off the ADU stopper on the rear side Note Be careful not to fall off the ADU cover when the screws are removed from the ADU stopper Fig 2 18 5 Take off the ADU cover while sliding it toward the right Fig 2 19 1 Take off the front cover P 2 18 2 5 1 Front cover 2 Open the ADU cover 3 Pull out the drawer 4 Remove 2 screws and take off the right front cover Fig 2 20 ADU...

Page 47: ... MACHINE 2 21 2 5 9 Right rear cover 2 5 10 Rear cover 1 Open the ADU cover 2 Remove 1 screw and take off the ADU stopper on the rear side 3 Take off the 2 screw and take off the right rear cover Fig 2 21 1 Remove 5 screws and take off the rear cover Fig 2 22 Right rear cover Rear cover ...

Page 48: ... check if this action eliminates the operational defect 2 6 1 MAIN board MAIN 1 Take off the rear cover P 2 21 2 5 10 Rear cover 2 Disconnect 16 connectors Note Connect the flat harness to the MAIN board with its electrode side down An error CA2 will be displayed if the connection is incorrect Fig 2 23 3 Remove 6 screws and take off the MAIN board Notes 1 When replacing the MAIN board also attach ...

Page 49: ...2 21 2 5 10 Rear cover 2 Release 1 lock support and take off the SRAM board Notes 1 Be sure to perform 08 388 after the SRAM board has been replaced 2 Perform 05 310 with the platen cover and the ADF RADF closed after replacing the SRAM board 3 Make sure that the direction of the battery on the SRAM board is correct when replacing it Fig 2 25 Fig 2 26 1 Take off the rear cover P 2 21 2 5 10 Rear c...

Page 50: ...Rear cover 2 Disconnect 2 connectors remove 4 screws and then take off the paper feed controller PC board and mylar sheet Notes If the ADU optional is installed disconnect 2 connectors of the ADU with other connectors at the same time before taking off the paper feed controller PC board If the PFP optional is installed disconnect 2 connectors of the PFP with other connectors at the same time befor...

Page 51: ...ns are installed A Paper Feed Controller GH 1060 B Fax Kit GD 1220 1221 Note Connect the connectors to the correct faston terminals on the switching regulator board Connector Harness F Red Black thick E Blue White thick D White Black thin C White Red thin B White Red thick A White White thick Fig 2 30 Fig 2 31 3 Remove 2 screws slide the switching regulator unit with the whole case slightly to the...

Page 52: ...e 1 screw and 1 ground wire Note Make sure that the position is correct when inserting the connector Fig 2 33 Fig 2 34 6 Remove 8 screws release 1 locking support and take off the switching regulator board Fig 2 35 Connector Connector 1 2 3 4 White Gray Black Brown Green Yellow Black White Switching regulator board Locking support ...

Page 53: ...42 OUTLINE OF THE MACHINE 2 27 2 6 6 Switching regulator cooling fan M6 1 Take off the left cover P 2 18 2 5 3 Left cover 2 Disconnect 1 connector and take off the switching regulator cooling fan while sliding it upward Fig 2 36 Switching regulator cooling fan Connector ...

Page 54: ...emoval and Installation of Options 2 7 1 MR 2020 Automatic Document Feeder ADF MR 3023 Reversing Automatic Document Feeder RADF 1 Turn the power OFF and unplug the power cable 2 Remove 1 screw and take off the connector cover Fig 2 37 3 Remove the ground wire Fig 2 38 4 Disconnect the connector Fig 2 39 ...

Page 55: ...eserved e STUDIO182 212 242 OUTLINE OF THE MACHINE 2 29 5 Remove 1 screw on the rear right side Fig 2 40 6 Remove the cover on the rear right side Fig 2 41 7 Remove 1 screw and 1 washer on the rear left side Fig 2 42 8 Open the ADF RADF Fig 2 43 ...

Page 56: ...2 30 2 7 2 MY 1027 Paper Feed Unit PFU G 1 When PFP is not installed 9 Remove 2 screws on the front side Fig 2 44 10 Slide the ADF RADF backward and take off by lifting it up Fig 2 45 1 Turn the power OFF and unplug the power cable 2 Remove 1 screw and take off the PFU connector cover Fig 2 46 ...

Page 57: ...OF THE MACHINE 2 31 3 Remove the ground wire Fig 2 47 4 Disconnect the connector Fig 2 48 5 Install the PFU connector cover Fig 2 49 6 Take off the rear cover P 2 21 2 5 10 Rear cover 7 Disconnect 1 connector optional damp heater Release the harness from the harness clamp Fig 2 50 ...

Page 58: ... Take off the drawer of the equipment and PFU drawer Fig 2 51 9 Remove 1 screw and take off 1 fixing bracket on the front left side Fig 2 52 10 Remove 1 screw and take off 1 fixing bracket on the front right side Fig 2 53 11 Remove 1 screw and take off 1 fixing bracket on the rear left side Fig 2 54 ...

Page 59: ...OF THE MACHINE 2 33 G 2 When PFP is installed 12 Remove 1 screw and take off 1 fixing bracket on the rear right side Fig 2 55 13 Lift up the equipment and take off the PFU Fig 2 56 1 Take off the rear cover P 2 21 2 5 10 Rear cover 2 Remove 1 ground wire and 2 connectors Fig 2 57 ...

Page 60: ... from the PFU P 2 30 G 1 When PFP is not installed 4 Take off the PFP drawer Fig 2 58 5 Remove 1 screw and take off 1 fixing bracket on the front left side Fig 2 59 6 Remove 1 screw and take off 1 fixing bracket on the front right side Fig 2 60 7 Remove 1 screw and take off 1 fixing bracket on the rear left side Fig 2 61 ...

Page 61: ... THE MACHINE 2 35 2 7 3 KD 1022 Paper Feed Pedestal PFP 8 Remove 1 screw and take off 1 fixing bracket on the rear right side Fig 2 62 9 Take off the PFU while lifting it up Fig 2 63 1 Take off the equipment and the PFU Then take off the PFP P 2 33 G 2 When PFP is installed Fig 2 64 ...

Page 62: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved OUTLINE OF THE MACHINE 2 36 ...

Page 63: ...evelopment Negatively charged toner adheres to the photoconductive drum and forms visible image 10 Discharging Eliminates the residual negative charge from the surface of the photoconductive drum 5 Transfer bias Improves transfer efficiency 6 Transfer Transfers the visible toner image on the photoconductive drum onto paper Data reading scanning CIS 600 dpi 7084 pixel Image processing Discharging D...

Page 64: ...ased works as a conductor Weak light Resistance is increased works as an insulator Fig 3 2 Formation of electrostatic latent image In the processes of charging data reading data writing discharging described later negative potential of the areas on the drum corresponding to black areas of the original are eliminated while the areas on the drum corresponding to white areas retains the negative char...

Page 65: ... circuit Fig 3 4 3 Data reading scanning Data reading is the process of illuminating the original with light and converting the reflected light into electrical signals This equipment uses the CIS Contact Image Sensor for data reading The optical image information read by the CIS is converted into electrical signals image signals which are then transmitted to the image processing section Fig 3 5 Fi...

Page 66: ...ng section into optical signal and exposing the drum surface with the light Semiconductive laser element converts image signals transmitted from the image processing section into optical signal laser emission to expose the drum surface and form an electrostatic latent image on it Fig 3 7 Semiconductive laser element Polygonal mirror Photo conductive drum Image processing section LDR board ...

Page 67: ...roller reverse development method Fig 3 10 Charging AC bias To obtain the stable development characteristics AC bias approx 1 100 V is charged to the development bias DC bias Fig 3 8 Fig 3 9 Drum Magnetic roller Photoconductive layer Magnet Magnetic roller Photocon ductive drum Aluminum base Toner Carrier always attracted onto the magnet Toner Bias voltage 357 VDC Toner The potential of the photoc...

Page 68: ...Consists of the ferrite and resin coating on its surface to provide consistent frictional electrification Note If the developer material is used for a long time beyond its normal life span the toner is caked onto the carrier The charging performance of the carrier is lowered Symptom 1 Image density is lowered 2 Toner scattering occurs 3 Background fogging occurs Solution Replace the developer mate...

Page 69: ... south and north poles are arranged inside the magnetic roller as shown in the right figure The developer material forms a brush like fluff which contacts the photoconductive drum surface This is caused by the magnetic force lines between the south and north poles Fig 3 13 N S S Magnetic force line Magnetic roller Photoconductive drum ...

Page 70: ...existence of solid black when making prints when a book is copied and the original cover is partially opened Temperature and humidity in the room when making prints Prints density and image quality mode As indicated in the figure below the life of the toner cartridge varies depending on the copy mode and coverage of originals Is this graph the toner consumption for copying in TEXT PHOTO mode using...

Page 71: ...d by the transfer charger from flowing into the transfer unit transport guide through the paper Output is controlled as follows to realizes the desirable transfability Fig 3 16 Method A paper passing the side of the drum is charged to the opposite polarity to the that of toner by the corona discharge of the transfer charger The toner moves from the drum surface onto the paper Fig 3 15 Paper positi...

Page 72: ...he cleaner and causes jamming To prevent this a separation finger is used to forcibly separate the paper which was left around the drum Fig 3 18 Method Apply negative DC bias to the separation charger The positive charge on the paper is decreased The electrostatic adherence force between the paper and drum becomes weak The paper is separated from the drum by its own stiffness Fig 3 17 Paper positi...

Page 73: ...hen caught by the recovery blade Fig 3 21 Method The melting point of the toner main ingredient resin is 90 100 C Fig 3 19 Fig 3 20 Heat Toner is melted by the heat of the surface of the fuser roller Pressure The pressure roller is pressed against the fuser roller by the springs to increase the adherence of the melted toner onto the paper Heat and pressure are applied to the paper when it passes b...

Page 74: ...aining on the photoconductive drum surface causes ungiven application of the charge for the next printing Fig 3 22 The next print will have a double image The preceding image appears Solution The entire surface of the photoconductive drum is illuminated with light by the discharge LED array The photoconductive drum becomes electrically conductive All of the negative charge remaining on the photoco...

Page 75: ...20T D 2320 D 2320C DC 357 V Adjustable output during printing AC 1100 V Adjustment not required during printing DC 150 V Fixed others T 1640 T 1640E T 1640D T 1640C T 1640T DC 340 V Adjustment output during printing AC 1100 V Adjustment not required during printing No DC positive output 5 Transfer Transfer bias Adjustable output Constant current 600 V Adjustment not required 565 V Adjustment not r...

Page 76: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved COPY PROCESS 3 14 ...

Page 77: ... STUDIO182 212 242 GENERAL OPERATION 4 1 4 GENERAL OPERATION 4 1 Overview of Operation Operation of equipment Operation during initializing pre running and ready Copying operation Drawer feed copying by START button Bypass feed copying Interrupt copying ...

Page 78: ...d OFF The CIS unit moves to the home position READY WARMING UP is displayed 2 Pre running operation Only when the temperature is at 16 C or less The pre running operation is started when the temperature of the fuser roller surface reaches a certain temperature The main motor is turned ON Fuser roller rotated Drum rotated Pre running operation stops after 15 seconds 3 When the surface temperature o...

Page 79: ...Registration clutch ON after a certain period of time paper is transported to the transfer area Copy counter operates 4 After the registration clutch is turned ON Transfer charger ON after a certain period of time Copy counter operates 5 Completion of scanning Scan motor OFF CIS LED OFF Registration clutch OFF after the trailing edge of the paper passed the registration roller Ready state 6 Paper ...

Page 80: ...pass pickup roller is lowered The bypass feed roller start to rotate Paper reaches the registration roller Aligning operation After a certain period of time the bypass pickup solenoid OFF 4 Hereafter the operation 3 through 6 of P 4 3 4 2 3 Drawer feed copying is repeated 4 2 5 Interruption copying 1 Press the INTERRUPT button LED INTERRUPT ON Copying operation in progress is temporarily stopped C...

Page 81: ... to the type of abnormality are displayed 4 3 1 Types of abnormality 1 Abnormality cleared without turning OFF the door switch A Add paper B Pick up failure in bypass 2 Abnormality not cleared without turning OFF the door switch C Misfeed in equipment D Replace the toner cartridge E Developer unit not installed properly 3 Abnormality not cleared without turning OFF the main switch F Call for servi...

Page 82: ... the drawer blinks When the drawer is selected START button disabled In case of the PFP drawer When the drawer is installed When the power is turned ON or the drawer is installed PFP starts initialization The detection of paper existence starts Tray up motor ON Tray is raised At this time the tray up sensor and paper empty sensor are OFF When the tray up sensor is not turned ON in a fixed period o...

Page 83: ... stopped When the paper empty sensor is turned OFF even if the tray up sensor is ON during copying The sensor is detecting that no paper exists The lamp on the control panel corresponding to the drawer blinks When the drawer is selected Copying is stopped During bypass feeding Bypass pickup solenoid ON Registration sensor is not turned ON in a fixed period of time Misfeed in bypass is displayed E1...

Page 84: ... Registration clutch OFF Fig 4 2 Less than regulation time Exit sensor OFF If the exit sensor is not turned OFF after regulation time Paper jam E02 The copying operation is stopped Immediately after the power ON Any of all sensors on paper transport path detects paper ON Paper jam E03 Front cover is opened during copying Paper jam E41 The registration sensor S4 is not turned ON in a fixed period o...

Page 85: ...E14 The PFP upper drawer feed sensor is not turned ON in a fixed period of time after the paper feed clutch is turned ON when paper is fed out of the PFP Paper jam E15 and E36 The PFP lower drawer feed sensor is not turned ON in a fixed period of time after the paper feed clutch is turned ON when paper is fed out of the PFP Paper jam E16 The PFU feed sensor is not turned ON in a fixed period of ti...

Page 86: ...splayed instead of the set number by pressing the CLEAR button and 8 button simultaneously when the service call lamp is blinking Refer to the error code table in the Service Handbook Disconnection of the connectors of the developer unit Set process unit is displayed START button disabled Solution Connect the connectors of the developer unit and close the front cover ...

Page 87: ...nd select various modes and LEDs and an LCD to display codes values and the states including each mode of the equipment The button switches the LEDs and an LCD are mounted on the control panel PC board HPNL and are installed the inside of the control panel When the operator s attention is required graphic symbols appear with messages explaining the condition of the equipment in the LCD panel Fig 5...

Page 88: ...ays error code paper jam position and paper jam release guidance Fig 5 3 3 Service call display Displays error code and service call symbol Fig 5 4 4 When input values can be changed by the up or down button in the self diagnosis mode the LED in the center of the up down left and right buttons is lit READY 1 100 NONSORT ZOOM FINISHING EDIT Misfeed in copier Open side cover of the copier 1 6 E41 Ca...

Page 89: ...panel 7 Cassette empty Indication of lack of paper Indicates when there is no paper in cassette Bypass copying is possible Supply paper to the selected cassette Select another cassette 8 Toner empty Indication of lack of toner The toner in the toner cartridge becomes empty When this message is displayed it is not possible to copy Reset after the toner is supplied and the front cover is closed 9 Mi...

Page 90: ...job Clears copy quantity Clears each setting Operati on accepta ble Copying Pauses copy job Enters into interrupt ing copy Enters into print job list screen Pausing copy job Resume s copy job Cancels copy job Clears each setting Enters into interrupt ing copy Enters into print job list screen Downloadi ng firmware In energy saving low power mode Enters into waiting state Enters into waiting state ...

Page 91: ...ed and controls the ON OFF of the LED and buzzer The LCD is controlled by the signal output from the panel controlling ASIC based on the information output from the SoC via the control panel data bus The input status of each button is output to the SoC via the data bus by the panel controlling ASIC and detected Each LED is controlled to be lit by the LED driver based on the information of the seri...

Page 92: ...control signal C0 becomes L level Then when the control signal LEDM24 of the LED driver changes to L level the current flows to the cover open lamp LED27 to turn ON the LED Conditions to turn ON the LED The LED is turned ON only when the two conditions below are met 1 The FET connected to the LED anode is ON 2 The cathode side of the LED is L level Low Low TEXT PHOTO lamp LED27 R 5V LEDM24 Current...

Page 93: ...crews Fig 5 6 2 Take off the control panel unit while lifting it up 3 Disconnect 2 connector Note When installing the control panel unit be sure not to have the harness being caught by the front right cover and the unit Fig 5 7 1 Take off the control panel unit P 5 7 5 5 1 Control panel unit 2 Remove 2 screws and take off the cover while sliding it Fig 5 8 Connector Control panel unit Cover ...

Page 94: ...rackets by removing 2 screws each Fig 5 9 4 Remove 11 screws disconnect 1 connector and then take off the control panel PC board Fig 5 10 1 Take off the control panel pc board P 5 7 5 5 2 Control panel PC board HPNL 2 Remove 2 screws and take off the LCD PC board Fig 5 11 Bracket Control panel PC board Connector LCD PC board ...

Page 95: ...electrical signal and then transmitted to the MAIN board After the binarization and the various image processing operations necessary for image formation are performed on the MAIN board the data are transmitted to the writing section Fig 6 1 Original glass ADF original glass Scan motor CIS home position sensor CIS unit Original glass ADF original glass Scan motor CIS home position sensor CIS unit ...

Page 96: ... 2 6 2 Construction Scanning section Original glass Original glass ADF Original glass CIS unit CIS CCD YG LED array RGB light guiding tube Rod lens array Drive section Scan motor M1 Automatic original detection sensor S9 S13 CIS home position sensor S1 Others Damp heater DH1 DH2 ...

Page 97: ...uiding tube to lead each light to the original and a YG LED array and then the reflected light is scanned by the CCD sensor In the CCD method reduction optical method the reflected light of the exposure lamp is LED through mirrors lens and slit to the CCD where the optical to electrical conversion for scanned data is performed In contrast in the CIS method close contact sensor method those operati...

Page 98: ...s nearly the same color effect as that of the YG xenon light for the light sensitivity of the CCD sensor This LED array produces the output power of 0 125W X 3 3 Scan motor M1 This is a two phase stepping motor which drives the CIS unit CIS The rotation of the motor is transmitted to the CIS unit through the timing belt to move the unit in the secondary scanning direction 4 CIS home position senso...

Page 99: ...S unit through the timing belt to move the unit to the home position The home position is detected when the actuator installed on the CIS case passes the CIS home position sensor S1 When the START button is pressed the CIS unit starts scanning the original Scanning an original on the ADF RADF The CIS unit CIS stops and stays at the shading position during the shading correction and at the scanning...

Page 100: ...r IC2 Fig 6 3 M VDD SG VSS MODE2 RESETB MODE1 CWB ENABLE CLOCK VREF Excitation mode setting 2 Fixed at H SCANRST Resetting SCNMD0 Excitation mode Setting 1 SCNDIR Motor rotation direction setting SCNEN Cutting off of the drive output SCNCLK Clock input SCNMVR Voltage to set value for the motor current PG1 PG2 Driver IC IC2 B B A A B B A A 24V 5V GND GND GND 5V IC53 SoC IC23 ASIC MAIN board ...

Page 101: ...e changed ON and after the last pulse goes OFF Cutting off of the drive output SCNEN Input Forcibly turn ON OFF the excitation drive H Normal operation Excited L Excitation drive is forcibly shut off Not excited Excitation mode Setting 1 SCNMD0 Input Sets the excitation mode The setting should not be changed within 7µsec after the first pulse of the CLK comes ON Resetting SCANRST Input Resets the ...

Page 102: ... generation is performed reading the reflected light amount of the white shading correction plate Black standard generation is also performed reading the light amount when the light source is turned off and according to the result adjustment by the light amount adjustment signal SCNLEDVR1 2 3 1 output through the D A converter from the SoC is made However the light amount of the green light source...

Page 103: ... the clock signals output from the SoC on the MAIN board and then it divides the photoelectric converted analog signals into four output signals and outputs to the AFE The AFE converts the analog signals into 8 bit digital signals and outputs to the SoC Fig 6 5 SoC AFE CCD MAIN board Contact image sensor unit 5V SH TRCLCK CK2B MCLCK RS RSCLCK CDIN1 CDIN2 CDIN3 CDIN4 SCNIMGA 0 SCNIMGA 1 SCNIMGA 2 S...

Page 104: ...ransferred into each chip is then combined into each channel and then output in a time division system Furthermore the multiple channels simultaneously perform this process to output the scanning signals of the multiple systems in parallel Shading correction A variation is caused by the following factors in the CCD output 1 The light source has a variation in its light distribution 2 Each of the e...

Page 105: ...e frame of the scanner unit as shown in the figure below Each sensor consists of an infrared Light Emitting Diode LED on the light emitting side and a phototransistor on the light receiving side When there is an original on the original glass light beams from the LEDs are reflected by the original and led to the phototransistors This means that the presence of the original is detected by the prese...

Page 106: ...he sensors receive the light reflected from the original and if one of the matrix conditions shown in 4 for original sizes are met the size of the original is instantly detected 3 The output signal from each sensor is input to ASIC on the MAIN board to determine the size of the original Fig 6 7 MAIN board APS C APS 3 APS 2 APS R ASIC 5VAPS 5V 5VAPS 5V SG SG MAIN board APS C APS 2 APS 3 APS 1 APS R...

Page 107: ...RATION All rights reserved e STUDIO182 212 242 SCANNER 6 13 Sensor detection points A4 Series Fig 6 8 LT Series Fig 6 9 A5 B5 A4 B4 A3 A5 R A4 R B5 R APS R APS C APS 3 APS 1 APS 2 ST LT LG LD ST R LT R APS R APS C APS 3 APS 2 ...

Page 108: ... original state until new paper size is recognized No original Output from all the sensors are H Reproduction ratio and paper are not selected Size change is always observed and detected The contact image sensor unit CIS stays at the standby position even if the reproduction ratio changes corresponding to the change of the original size When the platen sensor S2 is ON The latest original size or n...

Page 109: ... and a phototransistor It uses pulse modulation to detect an original Fig 6 10 The light emitting diode is driven by a pulse having a 130 µsec cycle and an 8 µsec ON time When the phototransistor receives the same signal as this pulse it is determined that there is an original The pulse modulation is performed inside the reflection type phototransistor 130 µsec LED Phototransistor Original 8 µsec ...

Page 110: ...2 rubber caps and 2 screws take off the original glass Notes 1 When handling the original glass take care not to contaminate the surface with fingerprints or such 2 Do not place the original glass directly on the floor 3 When installing the original glass fit 2 guides of the original glass in the groove of the scanner top cover 4 The rubber caps are not installed in the equipment for NAD CND AUD T...

Page 111: ... installing the ADF original glass place it between 2 small guides with its left hand side pushed to the scanner top cover Fig 6 14 1 Take off the original glass P 6 16 6 7 1 Original glass 2 Take off the front upper cover P 2 19 2 5 6 Front upper cover 3 Take off the control panel unit P 5 7 5 5 1 Control panel unit 4 Remove 8 screws and take off the scanner top cover Fig 6 15 Guide Guide Mylar S...

Page 112: ...hen installing the automatic original detection sensor connect the connector yellow to the connect one Fig 6 16 1 Take off the original glass P 6 16 6 7 1 Original glass 2 Disconnect 1 connector and remove 1 screw for each APS sensor Take off 4 APS sensors Note When installing the automatic original detection sensor connect the connector yellow to the connect one Fig 6 17 1 Take off the scanner to...

Page 113: ... jig Also be sure to take off the right rear cover when performing the adjustment P 2 21 2 5 9 Right rear cover The adjustment procedure is as follows 1 Temporarily fix screw A and B 2 Hook the belt tension jig to the motor bracket and frame 3 The scan motor is pulled by the belt tension jig Fix screw A and then B at the stopped position 4 Remove the belt tension jig Fig 6 20 Fig 6 21 Scan motor A...

Page 114: ...me position sensor with the bracket Fig 6 22 3 Release 2 latches take off the CIS home position sensor release the harness from harness clamp and disconnect 1 connector Fig 6 23 1 Take off the scanner top cover P 6 17 6 7 2 Scanner top cover 2 Remove 1 screw and take off the sensor with the bracket 3 Disconnect 1 harness clamp and 1 connector Fig 6 24 Bracket CIS home position sensor CIS home posi...

Page 115: ... sensor Fig 6 25 1 Take off the original glass P 6 16 6 7 1 Original glass 2 Move the CIS unit to the right most position Fig 6 26 Notes Be sure to hold the CIS unit drive belt 1 to move the CIS unit When the CIS unit is moved be sure not to touch the shaft as the silicon oil is applied on it Fig 6 27 Platen sensor CIS unit CIS unit drive belt 1 ...

Page 116: ...of the scanner base Fig 6 28 4 Lift up the CIS unit disconnect 1 connector on the bottom of the CIS unit and then take off the CIS unit Notes Take care not to contaminate the CIS unit surface with fingerprints dust or such Be sure to perform 05 310 with the platen cover or the ADF RADF closed after replacing the CIS unit Fig 6 29 5 Release 2 latches each to take off 2 original glass guides from th...

Page 117: ...IS case 2 Be sure to pull the flat harness so that it is not warped Fig 6 31 Fig 6 32 1 Take off the CIS unit P 6 21 6 7 7 CIS unit CIS 2 Remove 1 screw and take off the belt stopper Note When installing the belt stopper install it so that the protrusion of the stopper fits in the V groove on the inside of the CIS unit drive belt 1 Fig 6 33 Harness holder Flat harness Belt stopper CIS unit drive b...

Page 118: ...t the shaft of the equipment in the shaft guide attached on the bottom of the CIS case 2 When installing the CIS case install it so that the L shaped portion of the bottom of the CIS case comes under the CIS unit drive belt 1 Fig 6 35 1 Take off the CIS case P 6 23 6 7 8 CIS case 2 Loosen 1 fixing screw of the tension bracket Fig 6 36 CIS case Shaft Shaft guide L shaped potion Tension bracket ...

Page 119: ...t Fig 6 37 1 Take off the scanner top cover P 6 17 6 7 2 Scanner top cover 2 Take off the right rear cover P 2 21 2 5 9 Right rear cover 3 Take off the CIS unit drive belt 1 P 6 24 6 7 9 CIS unit drive belt 1 4 Loosen 2 fixing screws of the scan motor Fig 6 38 5 Take off the CIS unit drive belt 2 Note When assembling the CIS unit drive belt 2 be sure to perform the tension adjustment for the scan ...

Page 120: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved SCANNER 6 26 ...

Page 121: ...ent image Image signal is converted into the light emission signal of the laser diode on the laser driving PC board LDR then radiated on the drum through the optical elements such as cylinder lenses polygonal mirror and fθ lens The unit must not be disassembled in the field as they are very sensitive to dust and finely adjusted at the factory Fig 7 1 Fig 7 2 LDR board SNS board H sync returning mi...

Page 122: ...Since it is not visible be extremely careful when handling the laser optical unit components performing operations or adjusting the laser beam Also never perform the procedure with other than the specified manuals because you could be exposed to the laser radiation The laser optical unit is completely sealed with a protective cover As long as only the operations of specified manuals are performed ...

Page 123: ... if there is any dirt on their surface and if they are properly stuck to the equipment 2 Polygonal motor unit This unit consists of the polygonal motor M4 and polygonal mirror a Polygonal motor M4 This motor rotates the polygonal mirror in high speed Fig 7 4 b Polygonal mirror One laser beam emitted from the laser diode is reflected by this mirror As the polygonal mirror is rotated by the polygona...

Page 124: ...it and it protects the unit from dust a Uniform velocity scanning Since the polygonal mirror is rotating at a uniform velocity the laser beam reflected from the mirror scans over the drum surface at a uniform angular velocity namely the pitch between the dots on the drum is wider at both ends than at the center of the scanning range The fθ lenses help to correct this difference making all the dot ...

Page 125: ... Auto Power Control needs to be performed to maintain a constant optical output Fig 7 7 A block diagram of the semiconductive laser control circuit is shown below The semiconductive laser performs a monitor efficiency regulation a process to control a monitor current for beam emission amount The initial beam emission is adjusted to be approx 1 6 mW 240 µW on the drum surface The voltage of the mon...

Page 126: ...RSTS 0 and then output to the ASIC PMTRSTS 0 signal moves to a low level only when the rotation status of the motor is constant The SoC detects the rotation status with this signal and emits a laser beam only when the rotation status is constant Fig 7 9 Signal Function Low level High level PMTR 0 Polygonal motor ON signal ON OFF PMTRCLK Polygonal motor reference clock PMTRSTS 0 Polygonal motor PLL...

Page 127: ...isconnect 3 connectors from the MAIN board Note Connect the flat harness to the MAIN board with its erectrode side down An error CA2 will be displayed if the connection is incorrect Fig 7 10 3 Take off the switching regulator unit P 2 25 2 6 5 Switching regulator unit PS 4 Remove 1 screw 5 Pull out the laser optical unit while lifting it up and take it off Fig 7 11 Connector Connector Laser optica...

Page 128: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved LASER OPTICAL UNIT 7 8 ...

Page 129: ...s installed in the drive unit The drive unit consists of gears and timing belts and transmits the driving force of the main motor M3 to each unit The toner motor M2 which drives the toner cartridge is also installed in the drive unit The exit roller is driven by the main motor M3 However when the automatic duplexing unit ADU optional is installed it is driven by the exit motor M7 Fig 8 1 Exit roll...

Page 130: ...it to be driven Drive transmission Main motor M3 Drum Gears Developer unit Mixer Gears Cleaner unit Toner recovery auger Timing belt gears Fuser unit Fuser roller Timing belt gears Rollers Pickup roller Bypass feed roller Bypass pickup roller and PFU Timing belt gears Toner motor M2 Toner cartridge Gears ...

Page 131: ...utput from the MAIN board The driving force of the main motor is transmitted to the drum developer unit cleaner unit fuser unit and the rollers which transport the paper via gears and timing belts 2 Toner motor M2 The main motor is a DC motor which is controlled by control signals output from the MAIN board The driving force of the toner motor is transmitted to the toner cartridge via gears ...

Page 132: ...erence clock MMTRCKA from the SoC are compared in terms of the phase and speed and the difference is added to the excitation phase switching section Fluctuations in the power supply voltage are also added to the value 7 According to the result of step 6 the switching timing of the excitation phase switching section is changed and the FG pulse and the reference clock are controlled to make them equ...

Page 133: ... the rear side and the drum and developer unit etc start driving MMTRCKA signal This signal is a reference clock which keeps the main motor rotation at a constant speed MMTRPLL 1 signal This is a signal to show that the main motor rotation is in the lock range When the cyclic change of the FG pulse period against the reference clock is within 6 25 this is defined as a lock range the normal rotatio...

Page 134: ...n take off the main motor Fig 8 3 1 Take off the rear cover P 2 21 2 5 10 Rear cover 2 Disconnect 1 connector remove 1 screw take off the toner motor with the bracket and then remove 1 bushing and 1 gear Fig 8 4 3 Remove 2 screws and take off the toner motor Note Pay attention to the size length of the screws If incorrect ones are used the motor could be damaged Fig 8 5 Connector Main motor Bracke...

Page 135: ...s and take off the registration roller holder Note When installing the registration roller holder align the arm of the registration clutch with the rotation stopper of the registration roller holder Fig 8 6 4 Remove 1 clip and take off 1 bushing Fig 8 7 5 Disconnect 1 connector remove 3 screws and take off the main motor drive unit Fig 8 8 Registration roller holder Rotation stopper Clip Bushing C...

Page 136: ...produced by the spring force Follow the procedure bellow to perform tension adjustment when assembling the main motor drive unit Align the tensioner with the punch mark and tighten the tensioner fixing screw Hook the tensioner spring Install the main motor drive unit to the equipment Loosen the tensioner fixing screw Let the spring force produce tension for the belt and tighten the fixing screw Fi...

Page 137: ...or bypass tray and transport it to the transfer position The paper feeding system mainly consists of the pickup roller registration roller bypass paper sensor paper empty sensor registration sensor and the drive system for these components Fig 9 1 Bypass paper sensor Bypass feed roller Bypass pickup roller Bypass separation pad Registration sensor Registration roller Separation claw Paper empty se...

Page 138: ...enoid SOL1 Drawer pickup clutch Paper empty sensor S7 Bypass unit Bypass pickup roller Periodic replacement part Bypass feed roller Periodic replacement part Bypass separation pad Periodic replacement part Bypass paper sensor S8 Bypass pickup solenoid SOL2 Bypass pickup clutch Bypass feed clutch Registration roller Registration clutch CLT1 Registration sensor S4 Drawer detection switch SW5 ...

Page 139: ...sports the paper from the bypass pickup roller to the registration roller 7 Bypass separation pad When two or more sheets of paper are transported from the bypass pickup roller since the resistance force of the separation pad is larger than the frictional force between the sheets the lower sheets are not transported any further 8 Bypass paper sensor S8 Detects whether paper is set in the bypass tr...

Page 140: ... paper Then the registration rollers rotate to transport the paper to the transfer position 13 Registration clutch CLT1 This is an electromagnetic clutch which drives the registration roller When the registration clutch CLT1 is turned ON the drive is transmitted from the main motor M3 to rotate the registration roller 14 Registration sensor S4 It is used to detect that the leading edge of the pape...

Page 141: ...e drive when the pickup solenoid SOL1 is turned ON The pickup roller is rotated one turn by this driving force to pull out a sheet of paper from the drawer The pickup roller stops at its home position for each rotation Therefore when multiple sheets of paper are fed the pickup solenoid SOL1 is turned ON at each rotation One rotation of the pickup roller which is semicircle shaped can transport a s...

Page 142: ...ller and paper is greater than the friction between two sheets the pickup roller tries to send out a sheet of paper from the top of the stack Because both corners of the paper stack are held by the separation claws the paper on the top of the stack becomes bent and is sent out while the lower paper is not When the picking up force of the roller increases one sheet of paper is finally released from...

Page 143: ...lenoid SOL2 is turned ON the driving force of the main motor M3 is transmitted to the bypass pickup clutch and bypass feed clutch The bypass pickup roller is shifted down by the drive from the bypass pickup clutch And then the bypass pickup roller as well as the bypass feed roller is rotated by the drive from the bypass feed clutch to transport the paper on the bypass tray to the bypass feed rolle...

Page 144: ...etween two sheets of paper is smaller than that between a sheet and the separation pad the lower sheets are not transported any further while the uppermost one is transported by the feed roller The paper transported by the bypass feed roller reaches the registration roller After the paper is aligned by the registration roller the bypass pickup solenoid SOL2 is turned OFF to stop the bypass pickup ...

Page 145: ...rn Then a sheet of paper is fed and transported to the registration roller The leading edge of the paper turns ON the registration sensor S4 and then the paper stops at the registration roller The registration clutch CLT1 is turned ON and the paper aligned by the registration roller is transported to the transfer unit D Bypass feeding The bypass paper sensor S8 detects the availability of paper Wh...

Page 146: ... P 2 20 2 5 7 ADU cover 2 Remove 1 screw and take off the harness cover Fig 9 6 3 Release the harness from the harness clamp and disconnect 1 connectors Fig 9 7 4 Remove 2 screws and take off the bypass unit by lifting it up Note When installing the bypass unit place the guide behind the transfer unit Fig 9 8 Screw Harness cover Connector Bypass unit Screw Screw Guide ...

Page 147: ... 1 Bypass unit 2 Release each latch to take off the front and rear tray arms 3 Take off the bypass tray Fig 9 9 1 Take off the bypass unit P 9 10 9 5 1 Bypass unit 2 Remove 2 screws and take off the bypass separation pad unit Fig 9 10 3 Remove 1 screw on the bottom of the bypass separation pad unit and take off the cover Fig 9 11 Latch Bypass tray Bypass separation pad unit Cover ...

Page 148: ... separation pad while pinching the mounting bracket Fig 9 12 Note When the separation pad is replaced apply one grain of rice sized white grease to the supporting point Fig 9 13 1 Take off the bypass unit P 9 10 9 5 1 Bypass unit 2 Remove 2 screws and take off the cover Fig 9 14 Bypass separation pad Bypass separation pad White grease Cover ...

Page 149: ...nd rear arms with each protrusion on the bypass roller unit When the bracket is removed place it as shown in the figure on the right to prevent the levers from coming off Fig 9 15 Fig 9 16 4 Remove 1 clip and take off the bypass roller unit while sliding it to the front side Note When installing the bypass roller unit insert the shaft into the coupling on the rear side Fig 9 17 Spring Bracket Brac...

Page 150: ... 9 12 9 5 4 Bypass roller unit 2 Take off the bypass pickup roller and the shaft Fig 9 18 1 Take off the bypass roller unit P 9 12 9 5 4 Bypass roller unit 2 Remove 1 clip Then pull out the shaft 3 Take off the bypass feed roller Fig 9 19 1 Remove 1 screw on the bottom of the equipment 2 Take off the bypass paper sensor with the bracket Fig 9 20 Shaft Bypass pickup roller Bypass feed roller Shaft ...

Page 151: ... Take off the actuator with the spring while pushing the bracket stays wider Fig 9 21 4 Release 2 latches take off the bypass paper sensor and disconnect the connector Fig 9 22 1 Take off the bypass unit P 9 10 9 5 1 Bypass unit 2 Remove 1 screw Fig 9 23 Actuator Spring Bracket Bracket Connector Bypass paper sensor Bypass unit Screw ...

Page 152: ...ing upward to take it off Note When installing the bypass pickup solenoid be sure to place the spring between the arm and the solenoid Fig 9 24 1 Take off the bypass unit P 9 10 9 5 1 Bypass unit 2 Remove 1 E ring 1 bushing and 2 screws Then take off the 1 bracket and 2 gears Fig 9 25 3 Take off the bypass pickup clutch with its shaft Fig 9 26 Bypass pickup solenoid Spring Gear Gear Bracket Bushin...

Page 153: ...ing the bypass pickup clutch be sure to adjust the position of the hook of the spring and cover so that the center slit of the cover and the center of the cam are aligned Fig 9 28 5 Remove 1 E ring and take off the bypass feed clutch Fig 9 29 6 Remove the gear cover spring and cap Fig 9 30 Cam E ring E ring Gear Shaft Spring Cover Hook Cam Cover Spring Bypass feed clutch E ring Cover Gear Spring C...

Page 154: ...rear cover P 2 21 2 5 10 Rear cover 2 Release the harness from the harness clamp and disconnect the connector Fig 9 31 3 Take off the process unit P 10 9 10 7 1 Process unit 4 Remove 1 screw and take off the damp heater unit or dummy plate while sliding it to the rear side and lifting it up Fig 9 32 1 Take off the drawer 2 Take off the damp heater unit or dummy plate P 9 18 9 5 10 Damp heater unit...

Page 155: ...shaft by the pickup clutch when it is rotated counter clockwise be sure to hold the shaft while replacing the roller 3 Push 2 latches each to take off 2 pickup rollers Notes Be sure to install the pickup roller in the correct direction when reassembling it When it is difficult to take off the pickup roller alternatively follow the procedure below to remove it 1 Take off the damp heater unit or dum...

Page 156: ... the registration roller holder engage the arm of the registration clutch with the rotation stopper of the registration roller holder Fig 9 37 3 Release the harness from the harness clamp disconnect 1 connector and take off the registration clutch Fig 9 38 1 Take off the rear cover P 2 21 2 5 10 Rear cover 2 Release the harness from the harness clamp and disconnect 1 connector Fig 9 39 Registratio...

Page 157: ...ot to drop the bushing Fig 9 40 4 Remove 1 screw and take off the pickup solenoid from the bracket Fig 9 41 1 Take off the main motor drive unit P 8 7 8 5 3 Main motor drive unit 2 Take off the pickup solenoid bracket P 9 20 9 5 14 Pickup solenoid SOL1 3 Remove 1 E ring and take off the drawer pickup clutch Fig 9 42 Pickup solenoid bracket Screw Bushing Pickup solenoid Drawer pickup clutch E ring ...

Page 158: ...sition of the hook of the spring and the covers so that the stopper of the cover B and the center of the rib of the cover A are aligned Fig 9 44 1 Take off the transfer separation charger P 10 16 10 7 12 Transfer Separation charger 2 Remove 1 clip and take off 1 gear and the registration roller rubber while sliding them to the front side Fig 9 45 Flange Spring Cover A Cover B Hook Rib Slit Stopper...

Page 159: ... 2 Take off the transfer unit P 10 18 10 7 14 Transfer unit 3 Take off the registration clutch P 9 20 9 5 13 Registration clutch CLT1 4 Remove 1 clip 1 bushing and then take off the registration roller metal while sliding it to the rear side Fig 9 47 5 Remove 1 bushing 1 E ring and then take off 1 gear and 1 pin Fig 9 48 Registration roller rubber Pin E ring Gear Washer Washer Registration roller ...

Page 160: ... solenoid bracket P 9 20 9 5 14 Pickup solenoid SOL1 4 Remove 2 screws and then take off the feed gear unit Fig 9 49 1 Take off the damp heater unit or dummy plate P 9 18 9 5 10 Damp heater unit DH3 Dummy plate 2 Release the latch take off the bracket while lifting it up and then disconnect the connector Fig 9 50 3 Release the latch and take off the drawer detection switch from the bracket Fig 9 5...

Page 161: ...9 18 9 5 10 Damp heater unit DH3 Dummy plate 4 Take off the registration roller metal P 9 23 9 5 17 Registration roller metal 5 Remove 1 screw Fig 9 53 6 Take off the registration guide while lifting it up Release the latch and take off the drawer detection switch bracket Note Be careful not to break the harness which connects the registration guide unit with the drawer detection switch when takin...

Page 162: ...per empty sensor P 9 18 9 5 11 Paper empty sensor S7 8 Release the harness from the harness clamp disconnect the connector remove 3 screws and then take off the registration guide Fig 9 55 9 Remove the seal release 2 latches and take off the registration sensor Fig 9 56 Connector Registration guide Registration sensor Seal ...

Page 163: ...n This chapter explains about the area around the drum drum itself image processing their parts and control circuits Fig 10 1 Drum thermistor Separation charger Exhaust fan Recovery blade Transfer charger Main charger Discharge LED Cleaning blade Pre Transfer guide Transfer guide roller Ozone filter Drum Toner recovery auger Post Transfer guide ...

Page 164: ... parts Drum cleaning blade PM parts Recovery blade PM parts Drum thermistor THM4 Discharge LED ERS Main charger Needle electrode PM parts Main charger grid PM parts Transfer unit Transfer Separation charger Transfer charger wire PM parts Separation charger wire PM parts Exhaust fan M5 Ozone filter PM parts Transport guide Temperature humidity sensor S3 Switching regulator PS ...

Page 165: ...ge is applied to the needle electrode the air around it is charged ionized The ionized air then flows into the drum causing it to be charged This phenomenon is called corona discharge At the same time a control bias is applied to the main charger grid to control the charging amount In a dark place negative charge is evenly applied onto the drum surface by the corona discharge and this grid In addi...

Page 166: ...of the equipment The air to exhaust includes the ozone generated by the corona discharge and this ozone is removed by the ozone filter The exhaust fan M5 also helps the paper separation by absorbing the paper to post transfer guide 6 Discharge LED ERS Discharging is a process to decrease or eliminate the electrical potential of the drum surface The electrical resistance of the photosensitive layer...

Page 167: ...ent and voltage of each bias according to the 24VCOV OFF input from the low voltage generation circuit of the switching regulator Fig 10 3 Switching regulator Low voltage section High voltage section HVMVR 1 HVDTR 1 HVTVR 1 HVSAV 1 HVTM 0 HVSDWN 0 HVTAC 0 HVCLK 0 HVTT 0 HVTSP 0 HVTGB 0 Flash ROM SoC MAIN board ASIC D A converter Digital data Adjustment value Analog data Reference voltage Vc Transf...

Page 168: ...ias transfer charger and separation charger Each bias output can be linearly changed by switching these reference voltages The output operation of the reference voltage is as follows 1 The adjustment values of the main charger developer transfer and separation bias in the Flash ROM are output to the SoC 2 The reference voltage data are output from the SoC to D A converter 3 Converted to analog dat...

Page 169: ...r bias developer bias transfer bias and separation bias as well as the output of the auto toner sensor and the laser 10 5 2 Circuit configuration The configuration of the drum surface temperature detection circuit is shown below The voltage output from the drum thermistor is converted by the A D converter in the Main board and is input into the SoC The drum thermistor is a device whose resistance ...

Page 170: ...corrects the output of the main charger bias developer bias transfer bias and separation bias as well as the output of the auto toner sensor and the laser 10 6 2 Circuit configuration The configuration of the temperature humidity detection circuit is shown below The voltage output from the temperature humidity sensor is converted digitally by the A D converter on the MAIN board and is input into t...

Page 171: ...N 10 9 10 7 Disassembly and Replacement 10 7 1 Process unit 1 Open the ADU cover and transfer unit 2 Open the front cover and take off the toner cartridge 3 Disconnect 1 connector Loosen 2 screws and pull out the process unit Fig 10 6 Fig 10 7 Process unit for MJD Process unit except for MJD ...

Page 172: ...ng the process unit make sure that the connector harness is not caught under the developer unit 2 When closing the drawer of the equipment make sure that the connector harness is not caught 3 Make sure that the harness on the upper part of the process unit does not contact the frame of the equipment Fig 10 8 Fig 10 9 ...

Page 173: ...Release 1 latch Then pull out the process unit front cover and take it off Note When installing the process unit front cover wire the harness correctly in order not to contact the gears and harness of the process unit front cover each other Fig 10 10 Fig 10 11 Fig 10 12 Process unit front cover Connector Connector Latch for MJD Process unit front cover Connector Connector Latch except for MJD Proc...

Page 174: ...reful not to touch or scratch the drum surface at this time 2 Do not deform the guide mylar by touching this Fig 10 13 Fig 10 14 1 Take off the drum cleaner unit P 10 11 10 7 2 Drum cleaner unit 2 Release 1 latch and take off the discharge LED unit Note Be careful not to touch or scratch the drum surface at this time Fig 10 15 Drum cleaner unit Guide mylar Discharge LED unit Latch ...

Page 175: ...ake off the discharge LED unit P 10 12 10 7 3 Discharge LED ERS 2 Pull out the main charger and take it off by sliding it to the rear side Note Be careful not to touch or scratch the drum surface at this time Fig 10 17 1 Take off the main charger P 10 13 10 7 4 Main charger 2 Remove the spring and take off the main charger grid Note Do not touch the mesh area of the grid Fig 10 18 Discharge LED Ma...

Page 176: ...take it off Fig 10 19 1 Take off the main charger grid and main charger cleaner P 10 13 10 7 5 Main charger grid P 10 14 10 7 6 Main charger cleaner 2 Take off the terminal covers of both front and rear sides Fig 10 20 3 Remove the terminal and spring Then take off the needle electrode Notes 1 Do not touch the needle electrode directly with bare hands 2 Make sure not to hold or bend the needle ele...

Page 177: ...k place immediately after taking off 3 Be careful not to touch or scratch the edge of the cleaning blade Fig 10 22 1 Take off the drum P 10 15 10 7 8 Drum 2 Remove 2 screws and take off the drum cleaning blade Note Be careful not to touch or scratch the edge of the drum cleaning blade Fig 10 23 1 Take off the drum P 10 15 10 7 8 Drum 2 Take off 2 drum separation finger units by removing 1 screw ea...

Page 178: ... been replaced check if the pressure movement is normal by moving them with your hands Fig 10 25 1 Take off 2 drum separation finger units P 10 15 10 7 10 Drum separation finger 2 Remove 2 screws and take off the whole recovery blade with the bracket Fig 10 26 1 Open the ADU cover and transfer unit 2 Release the latch and take off the transfer and separation chargers Fig 10 27 Drum separation fing...

Page 179: ... on the front side 4 Release 2 latches and take off the terminal cover on the rear side Fig 10 29 5 Remove the terminal and spring Then take off the transfer charger wire 6 Remove the cushioning material disconnect the terminal and remove the spring Then take off the separation charger wire Notes 1 Insert the wire securely into the V grooves of the front and rear sides 2 Do not twist the wire 3 Do...

Page 180: ... Note When taking off the transfer unit take off the process unit first to prevent the drum from light 1 Open off the ADU cover 2 Take off 2 guides Fig 10 31 3 Take off the transfer unit while pulling the lever Fig 10 32 4 Remove 1 screw and take off the harness cover Fig 10 33 Guide Transfer unit Screw Harness cover ...

Page 181: ...2 212 242 DRUM RELATED SECTION 10 19 10 7 15 Ozone filter 5 Disconnect 1 connector Fig 10 34 6 Take off the transfer unit while lifting it up Fig 10 35 1 Open the ADU cover 2 Release 1 latch and take off the rear side guide Fig 10 36 Connector Transfer unit Guide ...

Page 182: ...the ozone filter cover 4 Take off the ozone filter Fig 10 37 1 Take off the transfer unit P 10 18 10 7 14 Transfer unit 2 Take off the transfer separation charger P 10 16 10 7 12 Transfer Separation charger 3 Remove 1 screw and take off the post transfer guide Fig 10 38 4 Remove 4 screws Fig 10 39 Ozone filter Ozone filter cover Post transfer guide ...

Page 183: ... the harness clamp and take off the exhaust fan with the duct Fig 10 40 6 Release the harness from the harness clamp remove the two sided tape and take off the exhaust fan Fig 10 41 1 Take off the left cover P 2 18 2 5 3 Left cover 2 Disconnect 1 connector remove 1 screw and then take off the temperature humidity sensor Fig 10 42 Duct Exhaust fan Duct Temperature Humidity sensor ...

Page 184: ...7 18 Toner cartridge interface PC board CTIF 1 Take off the process unit P 10 9 10 7 1 Process unit 2 Take off the inner tray P 2 18 2 5 2 Inner tray 3 Disconnect 1 connector remove 1 screw and then take off the toner cartridge interface PC board Fig 10 43 Connector Toner cartridge interface PC board ...

Page 185: ...eveloper material adheres to this drum surface to form images This process is performed in the developer unit This chapter explains about the units parts and control circuits related to development The developer unit in this equipment has a recovered toner supply mechanism which recycles the recovered toner scraped off by the drum cleaning blade The developer unit is driven by the main motor M3 to...

Page 186: ...per unit Developer material Periodic replacement required Mixers 1 2 and 3 Developer sleeve Magnet roller Doctor blade Auto toner sensor S6 Drum thermistor THMS4 Recovered toner supply mechanism Toner recycling auger Toner cartridge Toner cartridge PC board CTRG Toner cartridge interface PC board CTIF Toner motor M2 Ch 9 ...

Page 187: ...ith the drum surface Auto toner sensor S6 To print out normal images a constant ratio of the carrier and the toner in the developer material toner density must be maintained The auto toner sensor S6 detects the content ratio of the toner in the developer material with its magnetic bridge circuit When this sensor detects the insufficient status of the toner it drives the toner motor M2 to supply th...

Page 188: ...ge detecting function This function checks whether the toner cartridge is inserted correctly or not and whether the recommended toner cartridge is used or not Toner remaining check function This function notifies the user of the near empty status of toner Normally the message Toner is low is displayed when the toner is running out and Toner empty when the toner cartridge is empty Toner remaining c...

Page 189: ...d to adjust the timing for displaying the toner near empty status as follows The toner near empty status threshold setting 08 971 0 The period from the appearance of the toner near empty sign to the actual complete consumption of the toner is set long 1 Normal Default 2 The period from the appearance of the toner near empty sign to the actual complete consumption of the toner is set short 3 The si...

Page 190: ...the developer material using the mixer 3 The mixer 3 is mounted exclusively for the recovered toner to mix it in a sufficient period of time On the other hand the fresh toner transported from the toner cartridge into the developer unit is mixed by the mixer 2 Then the fresh toner and the recovered toner are mixed together and further transported to the mixer 1 They are further mixed by the mixer 1...

Page 191: ... motor which a DC motor driven by control signals from the ASIC on the MAIN board supplies toner to the developer unit by means of rotating the paddle and anger in the toner cartridge The toner motor is driven when the ON OFF signal TNRMTON 0 output from the ASIC becomes L level Fig 11 3 ASIC Toner motor TNRMTON 0 MAIN board 24VCOV OFF F1 ...

Page 192: ...rols the toner density so that the toner in the developer material is fixed to certain ratio Toner motor Supplies toner to the developer material Control panel Indicates toner empty information Recovered toner supply section The main motor supplies the recovered toner to the developer unit from the recovered toner supply mechanism Fig 11 4 Toner Developer material Auto toner sensor Toner cartridge...

Page 193: ...on Maintains the toner density to a certain ratio as follows Toner is consumed The toner density is lowered Change in the auto toner sensor output responding to humidity is detected The toner motor is driven Toner is supplied from the toner cartridge to the developer unit Toner empty detection and recovery Detects that there is no toner in the toner cartridge The toner motor is driven The auto ton...

Page 194: ...from the detection winding into a DC signal auto toner output VATS Fig 11 5 When the toner density is low The ratio of the toner against the carrier in the developer material decreases The magnetic resistance decreases The detection output increases The auto toner output VATS increases When the toner density is high The ratio of the toner against the carrier in the developer material increases The...

Page 195: ...per side of the unit does not touch the equipment When installing the developer unit make sure that the harness on the front side is not caught in the drawer 1 Take off the Process unit P 10 9 10 7 1 Process unit 2 Take off the drum cleaner unit from the process unit so that only the developer unit will be left P 10 11 10 7 2 Drum cleaner unit Notes 1 Be careful not to touch or scratch the drum su...

Page 196: ...r unit 2 When closing the drawer of the equipment make sure that the connector harness is not caught 3 Make sure that the harness on the upper part of the process unit does not contact the frame of the equipment Fig 11 8 Fig 11 9 1 Take out the developer unit P 11 11 11 6 1 Developer unit 2 Remove 2 screws and slide the developer unit upper cover to the direction of the arrow and take it off Fig 1...

Page 197: ...over Fig 11 11 3 Remove the developer material from rear side Note When removing the developer material be careful not to drop the developer material on the gears of the developer unit Fig 11 12 1 Rotate the gear on the rear side of the developer unit to the direction of the arrow while filling the developer unit with the developer material Spread out the developer material over the developer slee...

Page 198: ...wn Disconnect 1 connector release 1 latch and then rotate the auto toner sensor counter clockwise to take it off Fig 11 14 1 Remove the developer material P 11 12 11 6 2 Developer material 2 Disconnect 1 connector remove 1 screw and take off the drum thermistor Fig 11 15 1 Remove the developer material P 11 12 11 6 2 Developer material 2 Remove 2 screws and take off the recovered toner supply unit...

Page 199: ...screws on both ends of the doctor sleeve are removed be sure to adjust the doctor sleeve gap 0 45 0 05 mm after assembling Refer to Service Handbook Chap 3 9 Fig 11 19 6 Remove 1 screw and take off the polarity adjustment lever Note Make a note of the position where the polarity adjustment lever is pointing Mark the position if needed When reassembling match the polarity adjustment lever with the ...

Page 200: ...ct 2 connectors remove 3 screws and take off the bracket Fig 11 21 8 Remove 1 E ring and take off the guide roller on the front side Fig 11 22 9 Remove 1 screw and the gear Fig 11 23 10 Remove 3 screws Take off 1 bearing and the bracket Fig 11 24 Connector Bracket Guide roller E ring Gear Bearing Bracket ...

Page 201: ...timing belt Fig 11 25 12 Remove 1 E ring 1 pin and 1 pulley 13 Take off the guide roller on the rear side Fig 11 26 14 Remove the seal on the front side Remove 1 E ring and 1 bushing Fig 11 27 15 Take off the developer sleeve Fig 11 28 Timing belt Gear Gear Pulley Guide roller E ring Pin Seal Bushing E ring Developer sleeve ...

Page 202: ... Guide roller Developer sleeve 2 Take off the doctor sleeve Fig 11 29 3 Remove 1 screw and take off the tensioner bracket 4 Remove 2 screws and take off the holder Fig 11 30 5 Remove 2 bushings and 2 oil seals from the holder Replacement of Oil seal P 11 20 11 6 8 Replacement of Oil Seal Fig 11 31 Doctor sleeve Holder Tensioner bracket Oil seal Bushing ...

Page 203: ...2 oil seals on the rear side Replacement of Oil seal P 11 20 11 6 8 Replacement of Oil Seal Fig 11 33 8 Remove the end section of the mixer 1 9 Remove the bushing and oil seal Replacement of Oil seal P 11 20 11 6 8 Replacement of Oil Seal Fig 11 34 10 Take off the mixer 1 Fig 11 35 Mixer 3 Mixer 2 Oil seal Bushing Oil seal Bushing End section of mixer 1 Mixer 1 ...

Page 204: ...il seal P 11 20 11 6 8 Replacement of Oil Seal Fig 11 36 1 Insert a fine screwdriver into the depression of the oil seal to take it out 2 Push in a new oil seal parallel to the frame or bushing shown figure at right 3 Apply the grease Alvania No 2 amount of 2 rice grains on entire surface of the oil seal evenly Note Wipe off the excessive grease Fig 11 37 Oil seal Bushing Outside Inside Oil seal G...

Page 205: ...n transported to the exit tray after the completion of fusing The fuser exit unit is driven by the main motor M3 and the heat roller and exit roller are rotated by the main motor M3 When the automatic duplexing unit ADU optional is installed it is driven by the exit motor M7 Other than the above rollers the fuser exit unit consists of the heater lamps separation fingers thermistors THMS1 THMS2 THM...

Page 206: ... roller PFA tube sponge roller φ25 Periodic replacement part Exit sensor S5 Fuser roller unit Fuser roller Fluoro plastic coated roller φ30 Periodic replacement part Heater lamp LAMP1 LAMP2 564W 564W Thermistor THM1 2 3 Fuser thermostat THMO1 Non contact type 170ºC Separation finger Periodic replacement part Exit roller Exit motor M7 Stepping motor option ...

Page 207: ...MS2 This thermistor detects the temperature of the fuser roller to maintain it in a certain temperature range actually around 170 C between the lower limit causing the poor fusing and the upper limit causing the high temperature offsetting When the temperature of the fuser roller is lower than the preset temperature it turns ON the power supply to the heater lamps and when it is higher than the pr...

Page 208: ...ved FUSER EXIT UNIT 12 4 10 Exit motor M7 The exit motor is a stepping motor which drives the exit roller This motor rotates reversely to switchback the exit roller when the paper is transported to the ADU Install this exit motor M7 when the ADU optional is installed ...

Page 209: ... the fuser unit is held between the fuser roller and pressure roller and toner is fused on the paper with heat and pressure After this the separation fingers separate the paper from the fuser roller Then the paper is transported to the inner tray through the exit roller The paper transport status of the fuser exit unit is detected by the exit sensor When the power is turned ON the warming up of th...

Page 210: ...that the surface temperature of the fuser roller has exceeded the specified temperature the SoC turns the heater lamp OFF If the SoC does not function for some reason and the fuser roller is abnormally overheated as the result a forcible power OFF circuit transmits a relay OFF signal to the switching regulator to shut off the power supply to the heater lamp by opening the relay In addition if thes...

Page 211: ...ol for the both ends of the fuser roller During continuous printing the temperature of the end of the fuser roller area where the paper does not pass on generally tends to be higher than that of other areas areas where the paper passes on For this reason the edge thermistor detects the temperature of the end of the fuser roller When this thermistor detects the abnormal temperature the heater lamp ...

Page 212: ...Auto Power Save Mode to turn OFF the heater lamp When a value other than OFF is set for the Fuser roller temperature in Auto Power Save Mode code 08 409 448 the equipment controls to maintain the fuser roller temperature at the preset value by turning the 2 heater lamps ON OFF alternately Auto Shut Off Mode 08 206 When no operation is performed in a specified period of time default 15 min after th...

Page 213: ...he thermistor thermostat and heater lamp Reset the counter to 0 after repairing them then turn ON the power If the fuser unit error status counter is 20 or over e g 31 the data in SRAM or SRAM itself may possibly have been ruined due to causes such as leakage from the chargers Check the bias high voltage transformers and charge wires to see if any of them is defective and also look through all the...

Page 214: ...ely low and keeps turning the heater lamp ON As a result the fuser roller temperature rises and possibly activates the thermostat which is a safety protection device To prevent this in advance SoC works to detect whether each thermistor is broken or not Also the thermistors constantly check the temperature of heater lamp to prevent it from excessive heating by MAIN circuit abnormality or thermisto...

Page 215: ...ual C44 230 C or above 230 C or above Detecting 40 C 1 40 C or below Specified time C41 40 C or below Detecting 100 C 1 100 C or below Specified time C44 100 C or below 2 40 C or below 150 C or above On usual C43 150 C or above 40 C or below Detecting warming up temperature 1 Warming up temp or below Specified time C44 Warming up temp or below 2 40 C or below 150 C or above On usual C43 150 C or a...

Page 216: ...et and also be careful not to catch it between other parts a Make sure that the terminal of the thermostat harness does not contact the metal plate b Route the harness of the thermostat so that it is hooked on the notches of the rib c Route the harnesses of the thermistor so that they are hooked on the housing as shown below d Route the harnesses of the thermistor so that they are hooked on the ho...

Page 217: ...d e STUDIO182 212 242 FUSER EXIT UNIT 12 13 e Route the AC harnesses so that they are hooked on the housing as shown below Fig 12 7 f When installing the cover of the fuser unit make sure that the connector harness is not caught Fig 12 8 e AC harness f ...

Page 218: ...areful because the fuser paper exit unit is hot Fig 12 9 1 Take off the fuser paper exit unit P 12 14 12 6 1 Fuser Exit unit 2 Remove 1 spring and 2 screws 3 Separate the pressure roller unit from the fuser roller unit Note If the ADU optional is installed the spring has already been removed Fig 12 10 Note Separate the pressure roller and the heat roller while pressing the thermistor ground leaf s...

Page 219: ...242 FUSER EXIT UNIT 12 15 12 6 3 Exit roller 1 Take off the fuser roller unit P 12 14 12 6 2 Pressure roller unit Fuser roller unit 2 Release the latch and take off the gear A Fig 12 12 3 Take off the gear B Fig 12 13 4 Remove the bracket Fig 12 14 Gear A Gear B Bracket ...

Page 220: ...ng it to the rear side Fig 12 15 1 Take off the fuser paper exit unit P 12 14 12 6 1 Fuser Exit unit 2 Release the stopper using a flathead screwdriver Fig 12 16 3 Open the guide and slide it to the front side Then slide its rear hinge downward Note Keep the guide being slid to the front side during the steps 3 and 4 Fig 12 17 Exit roller Clip Bushing Stopper Stopper Guide 1 2 ...

Page 221: ...Remove 1 spring and take off the guide while the guide is being slid to the rear side Fig 12 19 6 Remove the Mylar 7 Disconnect 1 connector release 2 latches and then take off the exit sensor Fig 12 20 Note When installing the guide secure the spring to the hook of the fuser unit and the other end of the spring to the guide Fig 12 21 1 2 Guide Spring Exit sensor Connector Mylar Spring Hook Guide ...

Page 222: ...nger 1 Take off the fuser roller unit P 12 14 12 6 2 Pressure roller unit Fuser roller unit 2 Remove 3 screws and take off the sub guide Fig 12 22 3 Remove 5 springs from the hooks Fig 12 23 4 Remove 5 drum separation fingers with the springs Fig 12 24 Sub guide Fuser roller unit Spring Separation finger Spring ...

Page 223: ... sure not to mix up the upper heater lamp and the lower heater lamp The upper heater lamp has a coil wound up on its center part and the lower heater lamp has coils wound up on its both edges When installing the heater lamps be sure to face up their weld sides Do not touch the lamps directly with your hands The connector on each end of the harness which connects to the center heater lamp has a sma...

Page 224: ...e each bushing on both edges of the roller outward so that the bushings will engage with the frame and the installation will be secured Do not apply force onto the roller because it may be deformed Fig 12 28 4 Remove 1 C ring and 1 bushing on the front side of the fuser roller 5 Remove 1 C ring 1 gear and 1 bushing on the rear side of the fuser roller Fig 12 29 1 Take off the pressure roller unit ...

Page 225: ...ar sides Fig 12 32 5 Take off 2 bushings and then take off the pressure roller while sliding the pressure roller to the rear side Notes Do not drop the pressure roller when you lift it up because it is quite heavy Be sure to install the pressure roller from the rear side pressure roller ground plate side in order not to deform the pressure roller ground plate Fig 12 33 Spring Pressure lever Pressu...

Page 226: ...mistors and then take off each thermistor by releasing its harness out of the harness clamp Fig 12 34 Note When installing the thermistors do not mix up the installation positions of the side thermistor and the edge thermistor by telling them apart by the length of their harnesses Fig 12 35 1 Take off the fuser roller P 12 20 12 6 7 Fuser roller 2 Remove 2 screws and take off the fuser thermostat ...

Page 227: ... off the rear cover P 2 21 2 5 10 Rear cover 2 Disconnect 1 connector remove 1 screw and then take off the exit motor with the bracket while sliding it toward the right Fig 12 37 3 Release the harness from harness clamp remove 2 screws and then takeoff the exit motor Fig 12 38 Connector Bracket Exit motor Screw Bracket Exit motor ...

Page 228: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved FUSER EXIT UNIT 12 24 ...

Page 229: ...ler is adopted for the ADU of this equipment Immediately after the printing of one side fusing process is completed the paper is switchbacked by the exit roller The paper being reversed is then transported to the registration roller for the printing of the other side The ADU mainly consists of the transport rollers and their drive section the paper guides and the ADU driving PC board ADU Fig 13 1 ...

Page 230: ...80g m2 17 to 22 lb Bond Dimensions W466 x D55 x H244 mm W307 x D50 x H200 mm W61 x D50 x H101 mm Paper guide outside Paper guide inside Motor unit Weight Approx 1 2 kg Approx 2 65 lb Total weight of paper guide outside paper guide inside and motor unit Power supply DC 24V DC 5V Supplied from the equipment Bundled Unpacking instruction Paper guide outside Paper guide inside Motor unit Wire harness ...

Page 231: ...IO182 212 242 AUTOMATIC DUPLEXING UNIT ADU OPTION MD 0103 13 3 13 2 Construction Automatic Duplexing Unit ADU ADU motor M8 Stepping motor ADU driving PC board ADU ADU sensor Mounted on the ADU driving PC board ADU Upper transport roller Lower transport roller ...

Page 232: ...e ADU transport rollers upper and lower 2 ADU driving PC board ADU The sensor on this board drives the ADU motor and detects paper being transported within the ADU 3 ADU sensor This sensor is mounted on the ADU driving PC board to detect paper being transported within the ADU 4 Upper transport roller Lower transport roller These rollers transport paper within the ADU ...

Page 233: ... ADU OPTION MD 0103 13 5 13 4 Drive of ADU When the ADU motor M8 rotates in the direction A the transport rollers upper and lower rotate to transport paper through the drive of the gear and the belt Fig 13 2 Upper transport roller ADU motor Lower transport roller ADU driving PC board ADU sensor A ...

Page 234: ... one method the paper jam is judged by whether the ADU sensor is turned ON or not within a specified period of time after the paper started to be switchbacked to the ADU error code E51 and in another method it is judged by whether the registration sensor S4 is turned ON or not within a specified period of time after the paper started to be fed out of the ADU to the equipment error code E11 ADU ope...

Page 235: ...O182 212 242 AUTOMATIC DUPLEXING UNIT ADU OPTION MD 0103 13 7 1 Single paper circulation With the paper larger than A4 LT size duplex printing back side printing front side printing is performed for one sheet at a time as shown below Fig 13 3 1 2 3 4 5 6 7 8 9 ...

Page 236: ... OPTION MD 0103 13 8 2 Double paper alternateness circulation With A4 LT size paper or smaller duplex printing is performed for two sheets at a time as shown below Back side of the 1st sheet Back side of the 2nd sheet Front side of the 1st sheet Front side of the 2nd sheet Fig 13 4 1 2 3 4 5 6 7 8 ...

Page 237: ...s reserved e STUDIO182 212 242 AUTOMATIC DUPLEXING UNIT ADU OPTION MD 0103 13 9 Timing chart for duplex copying from upper drawer A4 4 sheets Fig 13 5 30 20 10 ADU sensor Exit sensor Registration clutch Registration sensor ADU motor Main motor ...

Page 238: ...ORATION All rights reserved AUTOMATIC DUPLEXING UNIT ADU OPTION MD 0103 13 10 Timing chart for duplex copying from upper drawer A3 1 sheet Fig 13 6 20 15 10 5 ADU sensor Exit sensor Registration clutch Registration sensor ADU motor Main motor ...

Page 239: ...21 2 5 9 Right rear cover 2 Remove 1 screw and 1 ground wire 3 Disconnect 1 connector Fig 13 7 4 Open the transfer unit and release the ADU stopper 5 Take off the ADU cover while sliding it toward the right Fig 13 8 6 Remove 4 screws and take off the ADU Note When installing the ADU be sure to put the ADU stopper on the rear side through the rear slit of the ADU Fig 13 9 Ground wire Connector ADU ...

Page 240: ...ic Duplexing Unit ADU 2 Disconnect 2 connectors release the latch and take off the ADU driving PC board Fig 13 10 1 Take off the ADU P 13 11 13 6 1 Automatic Duplexing Unit ADU 2 Disconnect 1 connector remove 2 screws and take off the ADU motor with the bracket Fig 13 11 3 Remove the gear 4 Remove 2 screws and take off the ADU motor Fig 13 12 Latch ADU driving PC board Connector ADU motor Bracket ...

Page 241: ...tor P 13 12 13 6 3 ADU motor M8 3 Remove 2 E rings 2 pulleys and 2 pins and then take off the timing belt Fig 13 13 4 Remove 1 E ring 1 gear and 2 bushings and then take off the upper transport roller Fig 13 14 1 Take off the ADU P 13 11 13 6 1 Automatic Duplexing Unit ADU 2 Remove 2 E rings 2 pulleys and 2 pins and then take off the timing belt Fig 13 15 Pin Belt Pulley E ring Pulley Bushing Uppe...

Page 242: ...de 3 Remove 1 clip and 2 bushings and then take off the lower transport roller Fig 13 16 1 Open the ADU cover 2 Release 1 latch and take off the guide on the front side Fig 13 17 3 Release 1 latch and take off the paper guide while sliding it toward the font Fig 13 18 Bushing Lower transport roller Bushing Clip Guide Latch Paper guide ...

Page 243: ...tch line Power supply used in the entire equipment during the image forming process It is supplied via the cover switch This voltage 24VCOV OFF is output only when both the main switch of the equipment and the cover interlock switches are turned ON when the front and ADU covers are closed When the equipment is in Energy Saving Mode Auto Shut Off Mode only the 5VB for the main switch line is suppli...

Page 244: ...stops earlier than the 24V line does it may cause damage to the electron device on each control circuit To prevent this the supply of the 5VB voltage stops after the power OFF signal is output and the minimum retaining time 50 ms or more has elapsed 3 Output protection Each output system includes an overcurrent and overvoltage protection circuit a fuse and internal protection circuit This is to pr...

Page 245: ...5VB CN104 Pins 9 and 10 Output to the MAIN board 2 12V 12V CN110 Pin 3 Output to the FAX unit 3 12V 12V CN104 Pin 2 Output to the control panel via MAIN board 12V CN110 Pin 2 Output to the FAX unit 4 24V 24V CN104 Pins 19 and 20 Output to the MAIN board PFU via MAIN board 24V CN112 Pins 1 and 2 Output to the PFC board ADU via PFC board PFP via PFC board 24VDF CN104 Pins 17 and 18 Output to the RAD...

Page 246: ...able Voltage Board Unit Part Fuse type 24V MAIN board Scan motor M1 F203 4A Polygonal motor M4 Switching regulator cooling fan M6 Registration clutch CLT1 Pickup solenoid SOL1 Bypass pickup solenoid SOL2 Contact image sensor unit CIS PFC board Exit motor M7 ADU board ADU motor M8 PFU PFP 24VDF ADF 24VCOV OFF MAIN board Toner motor M2 F201 4A Main motor M3 Exhaust fan M5 Auto toner sensor S6 Discha...

Page 247: ... MAIN board High voltage control signals F203 Side heater lamp control circuit TRC2 High voltage output circuit OUT1 Needle electrode bias OUT2 Grid bias OUT3 Developer bias OUT4 Transfer bias Relay OUT5 Separation bias OUT6 Transfer guide bias Center heater lamp control circuit TRC1 Main switch ADU cover opening closing interlock switch Front cover opening closing interlock switch Fuser thermosta...

Page 248: ... AC L SCN DH AC N CST DH AC L CST DH Not used Not used AC LAMP IN L AC LAMP1 IN N AC LAMP2 IN N AC L DRM DH AC N PFU DH AC L PFU DH THERMO DRM DH THERMO FSR Fuser unit PS ACC Inlet AC IN 1 J562 1 2 2 1 2 AC SW OUT L AC SW OUT N AC MAIN N AC MAIN L DC DRM DH TRC1 TRC2 2 4 1 3 8 7 4 1 4 2 2 3 1 2 3 2 1 3 2 1 1 1 1 AC SW IN L AC SW IN N 3 1 1 3 4 1 2 CN433 3 2 1 1 4 5 6 3 2 1 2 3 1 C B A CNTR LAMP SI...

Page 249: ...407 OPAL PM4 L Operating In use In use 5 Out EXTCTR Exit Sensor On Signal Open Collector SN7407 OPAL PM3 L ON In use 6 GND PG Power ground 0V In use In use 7 Out CSTCTR Drawer paper feed counter On signal Front side of paper print counter Open Collector SN7407 OPAL PL1 L ON In use 8 Out ADUCTR ADU paper feed counter On signal Back side of paper print counter Open Collector SN7407 OPAL PL2 L ON In ...

Page 250: ... EXTCTR signal output signal This signal is turned ON since it is synchronized with the turning OFF of the exit sensor A coin controller counts up the degree of usage of copy cards by means of this signal This signal is used only for coin controllers 5 CSTCTR signal ADUCTR signal output signal The CSTCTR signal is turned to a low level ON since it is synchronized with the CTRON signal when paper i...

Page 251: ...estrictions 08 352 Large size double count setting Set to 0 Single count 15 3 3 Setting value change and restrictions when using the coin controller 1 Setting value 08 202 Counter installed externally Set to 1 Coin controller 08 381 Setting for counter installed externally It should be charged precisely according to the usage Example To charge only when copies are made set to 0 2 Restrictions For ...

Page 252: ...e STUDIO205L 255 305 355 455 2009 TOSHIBA TEC CORPORATION All rights reserved EXTERNAL COUNTERS 15 4 ...

Page 253: ...16 2009 TOSHIBA TEC CORPORATION All rights reserved e STUDIO182 212 242 PC BOARDS 16 1 16 PC BOARDS 1 PWA F MAIN Fig 16 1 2 PWA F SRAM Fig 16 2 ...

Page 254: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved PC BOARDS 16 2 3 PWA F LDR Fig 16 3 4 PWA F SNS Fig 16 4 5 PWA F HPNL Fig 16 5 ...

Page 255: ...16 2009 TOSHIBA TEC CORPORATION All rights reserved e STUDIO182 212 242 PC BOARDS 16 3 6 PWA F FUS Fig 16 6 7 PWA F PFC Fig 16 7 8 PWA F ADU Fig 16 8 ...

Page 256: ...e STUDIO182 212 242 2009 TOSHIBA TEC CORPORATION All rights reserved PC BOARDS 16 4 9 PWA F CTIF Fig 16 9 10 PWA F CTRG Fig 16 10 ...

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