Panasonic KX-F2681BX, Service Manual

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Page 2: ...umper wire 2 Turn on the power switch 3 Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part screwheads control shafts handle brackets etc Note Some exposed parts may be isolated from the chassis by design These will read infinity 4 If the measurement is outside the specified limits there is a possibility of a shock hazard The equipment sho...

Page 3: ...d by permitted professional disposal firms knowledgeable in state govern ment federal and local hazardous materials and hazardous waste transportation and disposal requirements Battery continues to have no transportation limitations as long as they are separated to prevent short circuits and packed in strong packaging Commercial firms that dispose of any quantity of lithium cells should have a mec...

Page 4: ...e paper feed roller the pressure roller the eject roller the spur the pick up roller etc which are driven by the paper feed motor These separation roller and document feed roller which are rotated by the document feed motor and a gear which makes the two rollers rotate Also the spurs are metal and sharply pointed Be careful not to touch them accidentally by hand Document rollers Document feed gear...

Page 5: ...mage sensor Thermal printing Modified Huffman MH Modified READ MR 9600 7200 4800 2400 bps Automatic Fallback 5 35 41 95 F 45 80 RH Relative Humidity 118 351 265 mm 4 21 32 13 13 16 10 7 16 Approx 3 7 kg 8 2 lb Standby Approx 3 5W Transmission Approx 16W Reception Approx 28W Copy Approx 40W Maximum Approx 120W 220 240V AC 50 60Hz Approx 18 minutes including the greeting message Recording time may b...

Page 6: ...SE 1 2 3 RINGER HANDSET SPEAKER OPEN 1 2 3 4 5 6 7 8 9 10 LOWER FLASH 2 3 4 5 6 7 8 9 0 TONE 1 ABC DEF GHI JKL MNO PQRS TUV WXYZ TONE FLASH QUICK MUTE SLOW REDIAL PAUSE DIGITAL SP PHONE AUTO RECEIVE VOLUME STOP NEW MSGS PLAY BACK START COPY SET MAIL BOX ERASE Dial keypad HELP DIRECTORY Display panel MENU RESOLUTION Direct call stations LOWER Front lid open button Document exit Microphone Document ...

Page 7: ...t Silent ring fax recognition system Help function Copier function Facsimile Automatic document feeder up to 15 sheets 64 level halftones Resolution standard fine super fine halftone Delayed transmission Ring pattern detection Overseas transmission mode Remote fax receiving using an extension phone Junk mail prohibitor FEATURES NEW MSGS D PLAY BACK MAIL BOX ERASE 1 2 3 SELECT SELECT REC CHECK GREE...

Page 8: ...rint a quick reference CONNECTION Note When you operate this product the power outlet should be near the product and easily accessible HELP Single telephone line Power outlet 220 240 V Telephone line cord Power cord Dialing mode switch Set to TONE If you cannot dial set to PULSE DIALING MODE TONE PULSE ...

Page 9: ...ing the SP PHONE button When you do not use the handset and handset cradle 1 Installing the handset cradle Connect the handset cord A Open the front lid by pressing the front lid open button Open the back lid by lifting up the tabs located on the both side B Insert the handset cradle by matching the triangles Place the handset on the handset cradle and close the lids securely Press down the marked...

Page 10: ... the leading edge of the recording paper between the recording paper roller and the silver plate 2 Insert the paper under the back lid and pull a few centimeters of paper out of the unit 3 Close the back lid by gently pressing down on both ends and tear off the excess paper by pulling it toward you Note Only use the included roll of paper or specified recording paper or else the print quality may ...

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Page 12: ... let dry thoroughly If the LED array is dirty clean the glass with a dry soft cloth Confirm the operation of the following sensors recording paper sensor SW273 Document sensor PI302 Read position sensor PI301 Cover open sensor SW271 and JAM sensor SW272 If the mirror and lens are dirty clean them with a dry soft cloth Replace the part Be sure that all part s screws are tight NO 1 2 3 4 5 6 7 8 No ...

Page 13: ...ent feeder rollers and roller with a cloth moistened with isopropyl rubbing alcohol and let dry thoroughly Clean the rubber flap with a cotton swab moistened with isopropyl rubbing alcohol and let dry thoroughly Clean the white plate and glass with a soft dry cloth Clean the front lid by gently pressing down on both ends Connect the power cord and the telephone line cord 1 2 3 5 4 6 7 Caution Do n...

Page 14: ... paper thickness lever is set correctly and that the paper is set correctly without any looseness 2 Before troubleshooting first check that the connectors and cables are connected correctly without any looseness Especially if the abnormality occurs randomly check very carefully 3 When connecting the AC power cord with the unit case and checking the operation exercise utmost care in handling the el...

Page 15: ... Re program A mechanical error occurred Open the back lid and re install the recording paper There is no room left in memory to record a message Erase some or all of the messages The receiving unit is busy or ran out of recording paper Try again The TEL FAX greeting message has not been recorded Record a greeting message The unit ran out of recording paper Install a new recording paper CHECK COVER...

Page 16: ...roubleshooting method If it s tough to finding out just a broken component we should so arrange that block or section are specified for example digital board or image sensor A claim tag from customer or dealer gives us many kinds of expression for same trouble Because they are not technician or engineer But we should carefully read it on our supposition comes from experience and sufficiently test ...

Page 17: ...hanical sound Power supply Operation panel Sensor Communication FAX TEL Analog board No character or faint response in the LCD Skewed sending image Expanded print Image is distored Black or White lateral line on printing No feed Paper jam Multiple feed Skew No feed Paper jam Multiple feed Skew Abnormal sound from the product Voltage output is abnormal Keys are not accepted REMOVE DOCUMENT is displ...

Page 18: ...CTION JUDGEMENT REFERENCE FAX operation Copy operation Telephone operation Operation panel Sensor Clock Digital Speaker phone Digital TAM Voice prompt OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG OK NG SERVICE CODE 815 mute LED SERVICE CODE 561 SERVICE CODE 557 SERVICE CODE 558 SERVICE CODE 815 gain correctly compare to your watc...

Page 19: ... Check the gear Is the voltage at emitter of Q1 24 V Is the voltage at collector of Q1 24 V Is the voltage at pin 11 of IC7 less than 2V Replace Q1 Check the Motor and connector Is the phase signal from pins 73 77 of IC1 out put Is the solder at pins 73 77 of IC1 OK Replace IC7 OK OK OK OK OK OK OK OK YES END YES YES NO NO NG END NO NG YES NO YES NO YES NO Cleaning of separation roller page 109 Do...

Page 20: ...ensor flag works smoothly Repair or replace the sensor lever To Sensor section page 81 Check if the sensor reacts while the flag is moving Check the separation feed and pinch rollers are attached correctly Repair defective parts Check each sensors movement Check each rollers mount Check the white plate Replace the white plate Cleaning the each rollers pages 109 and 110 OK OK OK OK NG 2 Paper JAM O...

Page 21: ... the separation spring is distorting Cleaning the each rollers pages 109 and 110 Replace the separation pad roller and pressure spring Confirms whether the pad is dirty or not and is attached correctly Cleaning or replace the defective parts OK YES NO NG NG NG OK OK OK OK OK OK END END END ...

Page 22: ...ive parts Replace the separation pressure spring Replace white plate Repair or replace the defective parts Check the balance of both separation pressure springs Check the white plate Refer to Fig A of page 24 Check CCD unit Cleaning the each rollers pages 109 and 110 OK OK OK OK OK OK NO END END END END END END NG NG NG NG NG END NO NO NO NO YES YES YES YES OK OK OK OK OK OK OK OK OK OK OK Checks ...

Page 23: ...eet is peeling Replace the white plate Check the separation feed and pinch rollers are attached correctly Repair defective parts Cleaning the each rollers page 109 and 110 If expansion and contraction becomes within 1 5 this is standard and OK Cleaning the each rollers pages 109 and 110 Check white plate Check each rollers Check the each rollers dirty and scar To thermal head section page 88 OK OK...

Page 24: ...hart Is line appear Cleaning feed route Please the white plate and target glass thoroughly If the dirt cannot be removed change the white plate Is line appear Replace white plate CCD unit etc To digital board section page 54 OK END To thermal head section page 88 YES YES NG NO NO OK END ...

Page 25: ...g image 9 Expanded print Check the setting of recording paper Reset the recording paper Replace the recording paper roller Check the front lid open button locked Lock the front lid open button Cleaning the each rollers pages 109 and 110 NG NG OK ...

Page 26: ...guide recording paper roller etc parts are attached correctly and fix or change the abnormal part Check the drive gear for damage inserted foreign objects and also if the pendulum gear spring is attached correctly Check the other rotation sections operations oscillation sections and fix or change the abnormal part Contact Fix change the abnormal part Recording paper conveyance Confirm the drive se...

Page 27: ...ease Does it recur Does it recur Change the gear and gear chassis Check the drive gear for damage inserted foreign objects or abnormal installations Fix clean or change the abnormal part Do not apply large amounts to other parts Refer to page 169 END OK END NO NO NO YES YES YES A ...

Page 28: ...l was not received If the DTMF tone is not heard change the IC5 modem If the DTMF tone is heard there is a problem in the signal pass route Another problem Confirm the repair method in the DEFECTIVE FACSIMILE SECTION Refer to page 34 A communication error has arose The sending side s signal was cut during receiving Communication error causes 1 User unit 2 Circuit condition 3 Other party unit It is...

Page 29: ...h but communica tion result is error Press down READ SEN SOR gently and release it to be come up immedi ately Clean up separation roller using damp cloth And try again Rubbing alcohol Replace separation roller with new one Need to service ECheck sensor is in stalled properly No feed at all even one page ADF section 1 Defective facsimile section 1 Transmit problem YES NO NG NO NO NG NO YES YES YES ...

Page 30: ...596 Transmit level set from 10 dBm to 5 dBm or some Document goes through Ask other party changing RX equalizer increas ing TX level Ask other party increas ing TX level Ask RX party increase a parameter of RX error line value to more than No available Confirm sent image on RX side has many er rors Change 717 Transmit speed select to 7200 4800 or 2400 bps EIncrease 596 Transmit level set from 10 d...

Page 31: ...aper is installed properly RX problem Can RX something anyway Many errors on image Increase 595 RX error limit value to some Change 718 Receive speed select to 7200 4800 or 2400 bps Ask sender below change EIncrease 596 Transmit level set FAX ring count 07 is 2 3 or 4 Change FAX ring count to 1 Increase 593 Time between CED 300 bps to some value Error code No 68 Echo Decrease 596 Transmit level se...

Page 32: ...t Connect the PBX and TEL line and off hook Check the trace between pins 28 29 of IC5 and Tip Ring Is the signal at pin 38 of IC5 dial tone input Replace IC5 Check the trace between T1 and pin 38 of IC5 Is the signal at pins 28 29 of IC5 output Is the voltage at pin 8 of IC10 24 V Check the solder at pins 116 of IC1 Replace IC5 OK 3 Unit can copy but can not transmit receive YES YES YES YES NO NO ...

Page 33: ...after the START button has been pressed for models with a START button the other party should be called manually if possible Another possibility is entry of two pauses at the end of the auto dial number of the transmission side In this way the start time for the count can be delayed by 2 pauses about 10sec Cause 2 Erroneous detection because of echo or erroneous detection because of an echo cancel...

Page 34: ...2100Hz S1 and S2 will become ON Then the echo of the DIS signal output afterwards may be received and FAX1 may execute erroneous operation preventing start of communication Countermeasure B In service mode the CED signal frequency is set to 1100 Hz code No 520 or the time setting between the CED signal and the DIS signal is set from 75msec to 500msec in service mode code No 593 This is done becaus...

Page 35: ...ve service mode code No 594 Does not receive 1 The time setting between the CED signal and the DIS signal is set to 500msec service mode code No 593 2 The CED frequency is set to 1100Hz service mode code No 520 D Unit can copy but the transmission and reception image is incorrect Long distance or international communication operation This depends widely on the transmission and reception capability...

Page 36: ... 48 49 50 51 52 53 54 57 58 59 64 68 70 72 FF TX TRANSMISSION RX RECEPTION SYMPTOM Communication was interrupted with the STOP button Document paper is jammed No document paper Thermal head is overheated Out of thermal paper Cover is open Transmission is finished when T1 TIMER is expired DCN is received after DCS transmission FTT is received after transmission of 2400BSP training signal No respons...

Page 37: ...et to the reception mode or answering machine s message is on Is the receiver s FAX machine is the out of pa per or mechanical error status Confirm the receiver s FAX ma chine Is it the same brand as our products Is the password check mode set Have the receiver s parameter list printed Ask the receiver to cancel password of the receiver s FAX machine or set the caller s password corresponding to t...

Page 38: ...ed mode on the receiver Is communication OK Perform voice communication with the receiver End Check if the line is not inter rupted by noises or in the cross talk If it is not wait until the line is satisfactory for correct com munication 1 Raise the level of transmission Do not raise the level above the standard of each country If the communication should be OK at the level beyond the standard it...

Page 39: ...check the machine reception condition Is FTT sent from the receiver Perform voice communication with the NG caller Check if the line is not inter rupted by noises or in the cross talk If it is not wait until the line is satisfactory for correct com munication No response after post message is transmitted three times RTN and PIN are received No response after FTT is transmitted No problem on the ma...

Page 40: ...omplete Decrease the RX speed Does an error lines exist on received document RTN is transmitted PIN is transmitted to PRI Q PIN is transmitted Try again Perform communication test us ing the LOOP simulator and check the machine reception condition Is the data facsimiled correctly Modem test TEST CODE NO 554 Turn ON the FAX monitor func tion and have the receiver in question transmit the data again...

Page 41: ... T1 TIME is expired Is the data facsimiled correctly Modem test TEST CODE NO 554 Confirm if the receiver s FAX machine was set to receivable mode Turn ON the FAX monitor func tion and have the receiver in question transmit the data again Is communication OK Is FAX signal sound heard after the image data is received YES End YES YES NO NO NO 9 6 1 ...

Page 42: ... to set the poll mode again and perform polling Ask the service section of the receiver s FAX machine for ex amination Confirm if a mechanical trouble occurred e g the caller inter rupted the transmission Was it a mechanical error as mentioned above Have the caller transmit the data again Ask the service section of the caller s FAX machine for exami nation Check the hardware of the pe ripherals of...

Page 43: ...e receivable mode and communi cate again Check if the line is not inter rupted by noises or in the cross talk If it is no wait until the line is satisfactory for correct com munication Ask the caller to transmit the data again Confirm if a mechanical trouble occurred e g the receiver inter rupted the reception DCN responds to post message DCN is received after FTT transmission No response at the o...

Page 44: ...anical error as mentioned above Ask the receiver to set the Poll mode again and perform polling Perform communication test us ing the LOOP simulator and check the machine reception condition Is carrier cut Modem test TEST CODE NO 554 Ask the service section of the receiver s FAX machine for ex amination Carrier is cut when image signal is received Polling is not possible NO YES NO 6 1 16 YES 15 ...

Page 45: ... of function written in service manual by dial keypad And presses set The customer s unit receives the service value He hears Pii Pii double short beeps 7 Then he can repeat from step 5 8 When a technician wishes to end the REMOTE PROGRAMMING MODE he says to the customer Please press the STOP button to exit the REMOTE PROGRAMMING MODE And then hang up the handset Note 1 To enter the REMOTE PROGRAM...

Page 46: ...9 0 0 0 Customer press STOP key and hang up the handset END REMOTE PROGRAMMING MODE Piiii Press 3 digits code of service function and then press set Press mistaken key Pii Pii Pii SERVICE SETTING MODE Piiii Press 1 3 digits value of func tion and then press set SETTING THE FUNCTION Pii Pii Press mistaken key Pii Pii Pii ...

Page 47: ...t equalizer select Message transfer auto redial time set Message transfer auto redial line disconnection time set Document feed position adjustment value set Memory clear ROM check Monitor on FAX communication select Modem test Scanner test Code 001 002 003 004 005 006 007 008 009 010 011 021 022 023 024 025 030 031 039 041 042 043 046 050 051 052 053 054 060 061 062 063 070 080 089 501 502 503 51...

Page 48: ...select Receive error limit value set Transmit level set Transmit speed select Receive speed select Ringer off in TEL FAX mode Pause tone detect Redial tone detect CPC mode Auto disconnect cancel time Friendly reception CNG detection select T1 timer Monition on pager call message transfer select Voice prompt test Sensor check Digital SP Phone RX TX Check Original setting Transmit basic list Transmi...

Page 49: ... to check from most basic things to work What is most basic to work 1 POWER SUPPLY 5V 24V 2 SOLDERING of ICs 3 OSCILLATOR CLK SYSTEM CLK 24MHz MODEM CLK 49 92MHz 4 RESET 5 SIGNALS ADDRESS BUS A0 A15 DATA BUS D0 D7 READ WRITE RD WR CS Chip select ROMCS MDMCS Board doesn t work means that board has any problems in these most basic things This document is going to explaining the order of repair with ...

Page 50: ...re 5 processes to display some letters 12 00 AM on LCD If processes were not complete black square will be on the LCD 1 POWER ON If defective is in the power line LCD doesn t change NG 2 OSC NG 3 RESET NG 4 Read the data in the ROM program start NG 5 Make periphrals initial NG 12 00 AM Monitoring KEY IN LCD black square black square black square black square LCD LCD LCD LCD LCD ...

Page 51: ...n over and take bottom cover off RESET volatge not 5V 5V Check the voltge of testing points Refer to next page Check detail Refer to page 58 Is pin 101 of ASIC 5V like a wave form below RESET is fixed at 5V BE CAREFUL This is the TEST with AC power on LCD LCD Black squares or any charactor come Power ON Oscilloscope GND AC 3 PROCEDURE FROM OUR EXPERIENCE TO FIX ...

Page 52: ...4 17 pin 20 R79 R86 0v 5v 5v Thermal Head TEMP R47 R49 C37 C39 IC1 pin 38 pin 49 Note If the thermal head temperature is abnormal CALL SERVICE will appear in the dispaly Please check soldering and conduction of these components If it is no problem replace ICs If you still have problem please go to 3 1 check detail page 58 ALL OK GND Please check the status voltage of pin 56 pin 58 and pin 60 of IC...

Page 53: ...power line 1 5V line at CN1 between pin 6 and 4 pin is 5V 2 24V line at CN1 between pin 2 and 3 pin is 24V Please check the soldering first it comes from our experience Replace IC Check wave form on the ICs and BUS line Refer to page 60 OSC wave form Refer to page 59 OK 5V CPUCLK 0V XTEST Checking soldering Big ICs and resistor arry IC1 RA1 RA2 IC3 RA3 RA4 IC4 IC5 IC6 Checking soldering SYS CLK pi...

Page 54: ...IC5 and components that is connected to these ICs 3 OSCILLATOR CLK SYSTEM CLK 24 MHz MODEM CLK 49 92 MHz 5v 5v Check reset voltage 5v power on pin 101of IC1 ASIC NG NG 4 3msec reset time apx 175msec This wave form means another problem it is not caused by RESET circuit Please see the item CHECK WAVE FORM 0v power line 5V RESET 24 MHz SYSTEM CLK pin 96 of ASIC IC1 This point is 1 2 the MHz of the S...

Page 55: ...RESET active because address or data is confused by any problem on Address Data bus Check bus line Address to SRAM or MODEM may unsuceed Address to SRAM or MODEM may unsuceed Refer to pages 63 65 Check operation panel I F Check the lines that connect to CN5 from ASIC IC1 If no problem on the lines replace ASIC IC1 Refer to pages 63 65 RESET is no problem NO short circuit open voltage Refer to page...

Page 56: ...s V 0 2 V T 21 25µs 1 T 47 06kHz V 4 8 V W1 500ns W2 5µs Position W1 7 25µs W2 25 00µs Time Time Base Roll Off Time Base External Internal Internal 40 0V 7 25µs 12 25µs Time div 10 0V H1 W1 A0 D0 ROMCS RD OK Let s observe the wave form to fix the defective IC Please observe A0 D0 ROMCE RD by using digital oscilloscope Below graph show you the wave form that is observed when unit board is working c...

Page 57: ...v W1 500ns div Length 100 W2 5µs div Length 1k Sampling Normal 20Msps Marker 1 T 9 65µs V 4 7 V Marker 2 T 7 50µs V 4 9 V T 2 15µs 1 T 465 1k Hz V 0 2 V W1 500µs W2 5µs Position W1 6 20µs W2 25 00µs Time Time Base Roll Off Time Base External Internal Internal 39 9V 6 20µs 11 20µs Time div 10 0V H1 W1 A0 D0 ROMCS RD NG Trigger CH1 2 MEM1 MEM2 Too long CH1 5V div CH2 5V div CH3 5V div CH4 5V div W1 ...

Page 58: ... 5µs W2 5µs Position W1 2083 20µs W2 25 10µs Time Time Base Roll Off Time Base External Internal Internal 40 0V 2083 20µs 2133 20µs Time div 10 0V H1 W1 A0 D0 ROMCS MDMCS OK Trigger CH1 2 MEM1 MEM2 CH1 5V div CH2 5V div CH3 5V div CH4 5V div W1 5µs div Length 1k W2 5µs div Length 1k Sampling Normal 20Msps Marker 1 T 2376 70µs V 0 4 V Marker 2 T 7 50µs V 5 0 V T 2369 20µs 1 T 422 1 Hz V 4 6 V W1 5µ...

Page 59: ...bserved when MODEM doesn t work Oscillation is not intentionally supplied to MDM Please compare OK form to NG form MDMCS pin 52 of IC5 signal is coming many times more than good wave form In the case of this wave form MODEM doesn t work If soldering conductance is no problem we need to replace MODEM IC5 CH1 5V div CH2 5V div CH3 5V div CH4 5V div W1 5µs div Length 1k W2 5µs div Length 1k Sampling ...

Page 60: ...ps Marker 1 T 1372 40µs V 5 0 V Marker 2 T 7 50µs V 0 2 V T 1364 90µs 1 T 732 7 Hz V 4 8 V W1 5µs W2 5µs Position W1 1347 40µs W2 25 10µs Time Time Base Roll Off Time Base External Internal Internal Trigger CH1 2 MEM1 MEM2 40 0V 1347 40µs 1397 40µs Time div 10 0V H1 W1 A0 D0 ROMCS SRAMCS NG Like clock CH1 5V div CH2 5V div CH3 5V div CH4 5V div W1 2µs div Length 400 W2 5µs div Length 1k Sampling N...

Page 61: ...entered after IC4 is installed on the P C Board If the IC4 is replace it is necessary to enter the voice prompt again How to enter the voice prompt data Exchange the ROM IC2 with ROM for service Ref No EC23 on the P C board APower ON BLCD FORMAT ERASE WRITING WRITE OK about 15 second CPower OFF DReplace the ROM IC2 with the ROM for service on the P C Board EUse 784 and confirm the voice prompt Che...

Page 62: ...dized doesn t have a good looking outward In order words outward gloss brightness form is important for soldering So we should do visual inspection A basis of soldering is skirt Smooth skirt is shaped by surface tension as melting cream solder in reflow machine or lifting P C Board from DIP Section of Soldering Skirt skirt Leaded parts SMT QFP SOP parts ASIC MDM SRAM SMT PLCC parts CODEC Chip part...

Page 63: ... soldering cold soldering cold soldering RESISTOR ARRY RA cold soldering CHIP PARTS section COLD nu welded SOLDERING SHORTED SOLDERING LEADED PARTS section SMT PARTS shorted SMT PARTS LEADED PARTS CHIP PARTS shorted section shorted ...

Page 64: ...an you repair this unit We usually check the signal flow with the circuit schematic If defect is only one item we check only one of the signal routes Maybe something is defective on that route If there is more than one defect you need to check some of the routes At first you should check the area where there are common components on these signal routes Please see the check sheet next page ...

Page 65: ...C23 R19 IC10 5 6 7 CN1 10 CN271 10 C184 R184 IC151 76 41 C158 R161 C24 R20 IC151 40 38 C245 R245 IC241 4 5 8 SPEAKER Handset IC5 28 29 C23 R19 IC10 5 6 7 CN1 10 CN271 10 C184 R184 IC151 76 45 46 C154 L154 C24 R20 L153 SPEAKER IC5 28 29 C23 R19 IC10 5 6 7 CN1 10 CN271 10 C184 R182 IC151 73 63 C203 R210 C24 R20 IC201 2 1 C202 R201 T101 TEL LINE Beep for TEL LINE IC1 86 CN1 11 CN271 11 R185 C186 IC15...

Page 66: ...C203 R210 IC201 2 1 C202 R201 T101 TEL LINE Greeting for TEL LINE MSGS for TEL LINE TEL LINE T101 R202 C205 IC201 6 7 C210 C173 R172 R173 C174 IC151 59 67 R217 C214 IC202 10 11 C217 CN271 9 CN1 9 R11 IC10 2 1 C19 R13 IC5 38 MIC R167 C164 IC151 51 67 C179 R177 IC151 68 70 R218 C215 IC202 4 3 CN271 9 CN1 9 R11 IC10 2 1 C19 R13 IC5 38 Greeting Memo Rec ICM Rec Note digital board ...

Page 67: ... circuit Replace PC102 Does the voltage at 2 pin of IC151 change between high level and low level Replace PC102 or R281 Check IC151 Check the Bell detection circuit Is the Bell detection circuit OK Does a ring tone signal appear at 28 29 pins of IC5 digital board Replace IC5 Following the ITS section and search for the point on the route between the modem and the speaker where the signal disappear...

Page 68: ... is actually started Speaker phone is still muted while unit is detecting call progress tone so speaker phone won t work when you only push that key In order to make speaker phone turned on firmly we need push the speaker phone key with handset off hooked or turn the call progress tone off under the telephone line connected You do off hook push the speaker phone key and on hook you hear a dial ton...

Page 69: ... Tx Don t input a dial tone call progress tone to telephone line at the time Now under the speaker phone test mode Please check with service function 9000 841 TEL LINE T101 R202 C205 IC201 6 7 C210 C173 R172 R173 C174 IC151 59 67 R217 C214 IC202 10 11 C217 CN271 9 CN1 9 R11 IC10 2 1 C19 R13 IC5 38 83 IC6 13 17 18 C10 R5 C11 R6 IC11 5 6 7 R8 CN1 8 CN271 8 C185 R183 IC151 75 41 C158 R161 IC151 40 38...

Page 70: ...ill melt again It has not been repaired The cause exists same where else Because of circuit compostion If 24V is not output don t output In most cases our experience the symptom is that nothing is output There is a high possibility in the primary side more than the secondary side 5V 5 24 5V 4 25Ω 2W 1200Ω 1W 5V 5 24 5V 4 AC INPUT Input circuit Rectifier circuit Converting circuit Q101 24V output c...

Page 71: ...procedure comes from our experience of troubleshooting in our lab ƒBefore turning on the power supply you should check F101 Is F101 open Replace F101 D101 is short D G Q101 short Replace Q101 D104 R107 R106 R121 and IC101 Replace D101 Next Page YES NO YES NO YES NO D S Q101 short Replace Q101 YES NO S G Q101 short Replace Q101 YES NO ...

Page 72: ...check DC DC converter check 24V GND short 24V output OK Replace PC101 and IC201 Replace the whole board 5V check DC DC converter check It is difficult to fix by testing other parts NO YES YES NO YES NO YES NO YES NO YES NO 5V output OK 5V check Replace Q201 Replace D203 5V output OK Replace IC202 5V output OK 5V output OK Replace D204 Replace peripheral circuit of IC202 ...

Page 73: ...h the Gate circuit which is composed of D104 R107 R114 and R121 Then you should change all of the parts listed as follows F101 Q101 D104 R107 R114 R121 IC101 IC101 Occasionally it exists as the sole case of a broken IC101 You should exchange D201 If D201 is broken the oscillation circuit of the power supply cannot operate Check it with an electric tester Intermittent Oscillation This happens when ...

Page 74: ...ndication Is the Key always pressed Check disconnection of CN5 digital board or CN301 operation board Is the disconnection of the cable and connector between the LCD and Operation board OK YES NO Replace the LCD Check IC301 Repair Check IC301 operation board Repair the keys YES NO NG ...

Page 75: ...s low level Replace IC301 Check the voltage at pin 15 of IC301 Document set 4 5V No document 0V When the pin 9 of IC301 is low level Check the voltage at pin 31 of IC151 Open cover 4 5V Close cover 0V Replace IC301 Replace IC151 NG Check the soldering at R271 Check the soldering at R272 Replace SW271 Replace PI302 Replace PI301 Check the soldering at R332 Check the soldering at R331 OK Check the s...

Page 76: ...4 Check the recording paper sensor SW273 Check the voltage at pin 6 of IC151 Present recording paper 0V Out of recording paper 4 5V Check the soldering at R275 Check the soldering at R276 Replace IC151 Replace SW273 NG OK OK OK ...

Page 77: ...LED lamp of the read section light Service code 555 Check the connection between CN7 and LED lamp Is the voltage at pin 1 of CN7 24V Replace LED lamp Next page Is the voltage at pin 62 or IC1 4 5V Is the voltage at pin 16 of IC7 0 6 7V Check IC1 or re place IC1 Replace IC7 Check the pattern between IC7 and CN7 Repair the connection END NO NO NO NO YES YES YES YES NO NG NG OK OK OK B ...

Page 78: ...nd check the amplitude at pins 2 5 of CN6 4 5 Vp p Is the voltage at pin 1 of CN6 5 V Check the waveform of CCD and read section Refer to page 86 Check CCD board Refer to page 85 Check the solder at pins 50 53 of IC1 Replace IC1 Check power supply section Refer to page 76 YES NO YES NO NG OK OK B ...

Page 79: ...al board 4 5 Vp p Check the waveform at pin 7 of CN801 CCD board Refer to page 87 Check the waveform at pin 1 of IC801 CCD board Refer to page 87 Check the short at pins 2 5 of CN801 CCD board Check R830 Replace Q801 Q802 Q803 CCD board or perform CCD adjust Check R830 Replace IC1 Replace R830 CCD board Replace IC801 CCD board Check the solder at pins 50 53 of IC1 Digital board YES NO NG NG NG NG ...

Page 80: ...ction Oscilloscope setting V CH1 0 5 V div CH2 5 V div DC couple CHOP mode H 1 msec div Trigger CH2 SLOPE Probe point GND Test point AG CH1 Test point VID CH2 Test point FTG Waveform CH1 CCD signal ACH2 FTG GATE signal trigger Note This waveform will be shown when the CCD reads the white plate of document cover ...

Page 81: ...0BX KX F2681BX about 0 6Vp p about 1 0Vp p about 1 5V 1 5V 0 5 V div AC couple 0 5 V div AC couple 1 V div DC couple GND 3 1 3 2 4 No CH1 probe point 3 1 IC801 pin 1 CCD Board 3 2 CN801 pin 7 CCD Board 4 IC1 pin 39 AMON Digital board ...

Page 82: ...r pin 8 of CN251 Check R47 R48 R49 C37 C38 and C39 Replace the thermal head Check IC1 Check the voltage at pin 38 of IC1 3 V 0 V 2V 65 about 2 6V 25 Take out CN11 and check the amplitude again Take out CN11 and check the amplitude again Check the solde at pins 22 25 28 of IC1 or re place IC1 Digital Board Is the amplitude at pins 1 3 of CN11 4 5 Vp p Check the cable of CN11 and CN301 Power unit Ch...

Page 83: ...e Set Functions are accessed by entering their code changing the appropriate value then pressing the SET key The test Functions are accessed by entering their code and pressing the key listed on the menu While programming to cancel any entry press the STOP key 4 2 OPERATION FLOW Programming User mode user programmable Service mode not user programmable 2 SET mode 1 TEST mode Normal Special 3 SET m...

Page 84: ...680BX KX F2681BX 4 3 USER MODE The list below is an example of the SYSTEM SETUP LIST the unit prints out BASIC FEATURE LIST Set Value ADVANCED FEATURE LIST Note The above values are default Code Code Set Value ...

Page 85: ...n 8 step 1mm Press START COPY SET Press START COPY SET To monitor the line signal with the unit s speaker during FAX communication or not START press START press START press START press START press Selects the jam detection of document during FAX transmission copying Press any key 3 time 001 999 00 99 030 sec 1 2 3 OFF ON 1 2 00 99 Selection of document feed position Setting of message transfer pa...

Page 86: ... not output at phase A 594 Setting of overseas DIS detection Sets the recognizing format of DIS signal 1 Detects the first DIS signal sent from the receiver during FAX transmission 2 Ignores the first DIS signal sent from the receiver during FAX transmission 1 2 1 Detects at the 1st time 2 Detects at the 2nd time Detects at the 1st time 595 Setting of the acceptable value of reception error 001 99...

Page 87: ... To monitor the line signal with the unit s speaker during mes sage transfer pager call START press see page 66 START press see page 95 1 A 2 B 3 OFF 1 35 sec 2 60 sec Set Value 1 ON 2 OFF Code Function 719 Ringer off in TEL FAX mode 721 Pause tone detect 722 Redial tone detect CPC mode 731 732 AUTO disconnect 763 CNG detect time 775 Monitoring of message transfer 771 T1 timer 784 Voice prompt tes...

Page 88: ... the modem 1 1100 Hz Consecutive signal of EOM for tonal 2 2100 Hz G2 carrier signal Consecutive of CED signal 3 G3 V29 training signal modulation wave of carrier signal 1700 Hz 5 5 4 START Service Mode MODEM TEST Service Mode MOTOR TEST LCD CHECK Service Mode SCAN CHECK Service Mode Turn on the LEDs of the image sensor and operate the read system 5 5 5 START ROM CHECK Service Mode Indicate the ve...

Page 89: ...ead Position Sensor at the read Position Co Cover Open Sensor Cover Open Ja Jam Sensor Jam Pa Recording Paper Sensor Set Recording Paper Cu Cutter Position SW Home Position Service Mode SENSOR CHECK any key Code Button Name 02 03 04 05 07 08 0A 0B 0C 5 6 7 8 9 0 REDIAL PAUSE Code Button Name 35 36 37 38 39 3A 3B 3C 3D Button Name RESOLUTION AUTO RECEIVE START COPY SET MENU HELP SP PHONE MUTE LOWER...

Page 90: ...e selected Position C Select this when documents multiplefeed 3 Close the front lid by gently pressing down on both ends 3 CONFIRMATION OF SEPARATION SPRING 1 Open the operation grille 2 Check the highest level of the separation spring with the spring height tool PFZZ2F780M Please make sure that the separation spring does not touch the tool during this operation Both right and left See Fig 1 3 Che...

Page 91: ... cord Part No PQZZ8K18Z Refer to next page 5 Connect between LED array and digital board with extension cord Part No PQZZ2K12Z Refer to next page 6 Connect AC cord 7 Press the MENU button 8 Press the 9 0 0 0 and buttons 9 Press the 5 5 and 5 buttons Notes 1 Install the lens so that the marking RED on it is upper side 2 Do not touch the glass face of the lens with the bare hands 3 If you have no in...

Page 92: ...gure below 3 Fix the lens fixing screw and CCD board fixing screw Oscilloscope setting CH1 0 5 V div CH2 2 V div TIME 1 ms Trigger CH2 Mode AC CN7 CN6 FIG AG AMON VID DIGITAL BORAD OSCILLOSCOPE CH1 CH2 To point FTG To point VID Extension cord Part No PQZZ2K12Z To LED array for CCD Unit Extension Cord Part No PQZZ8K18Z To CCD baord Never connect land AMON Lens fixing screws CCD board fixing screws ...

Page 93: ... page then attach on the target glass This is a temporary treatment You should use an instrument for this adjustment purpose if you require an accurate repairment 5 DOCUMENT READ START POSITION ADJUSTMENT 1 Connect AC cord 2 Copy the document and confirm the read start position of the document 3 If get out of position adjust the read position 4 Press the MENU button 5 Press the 9 0 0 0 and 5 6 3 b...

Page 94: ... L R R L Reverse Make sure the position of L and R Tape Tape 2 1 2 The edge of glass and chart should be put togeter then fix with tape for white level adjustment LED Array Side edge of the glass for lens and CCD read position adjustment ...

Page 95: ...edure 1 1 Push the front lid open button to open the operation block 2 Pull the Libs 3 Remove the handset cradle cabinet 4 Remove the 2 screws A HOW TO REMOVE THE HANDSET CRADLE CAB FRONT LID OPEN BUTTON HANDSET CRADLE CABINET A A 1 2 2 3 3 ...

Page 96: ...sh the front lid open button in the direction of the arrow to open the operation block 2 Pull both sides of the arms See Fig A 3 Pull up the operation block Ref No 1 Procedure 2 HOW TO REMOVE THE OPERATION BLOCK 1 Set the both arms on the boss as showing in following Fig B 2 Push the operation block down HOW TO ATTACH THE OPERATION BLOCK ...

Page 97: ...6 screws A and the operation block cover 2 Remove the 2 screws B 3 Pull out the 1 connector and remove the 1 flexible connector 4 Remove the operation board 5 Remove the LCD Pull down the connector Remove the flexible connector 1 2 LCD FLEXIBLE CONNECTOR OPERATION BOARD OPERATION BOARD COVER B A CONNECTOR ...

Page 98: ... Ref No 5 Procedure 4 5 HOW TO REMOVE THE ANALOG DIGITAL BOARDS SPEAKER AND MIC 1 Remove the 3 screws A 2 Remove the analog board 3 Remove the 2 connectors 4 Remove the 7 connectors 5 Remove the 1 screws B 6 Remove the digital board 7 Remove the 1 screw C 8 Remove the speaker 9 Remove the MIC B A A BOTTOM FRAME A B C SPEAKER ANALOG BOARD MIC CONNECTORS CONNECTORS DIGITAL BOARD ...

Page 99: ...crews A and remove the power supply board 2 Remove the 1 screw B 3 Remove the 2 connectors 4 Remove the AC inlet A MOTOR BLOCK Ref No 7 Procedure 4 10 7 HOW TO REMOVE THE MOTOR BLOCK 1 Remove the paper cutter See Ref No 10 2 Remove the 2 screws A 3 Remove the motor block A A B POWER SUPPLY BOARD CONNECTOR CONNECTOR ...

Page 100: ...OW TO REMOVE THE ROLLERS 1 Remove the motor block See Ref No 7 2 Remove the stopper with minus screwdriver 3 Remove the rollers 4 Remove the gear and stoppers from roller shaft and replace roller A CCD UNIT HOW TO CLEAN Clean the glass of CCD unit with cloth soaked in alcohol STOPPER DOCUMENT FEED ROLLER SEPARAION ROLLER STOPPER STOPPER GEAR STOPPER STOPPER DOCUMENT FEED ROLLER ...

Page 101: ...ve the recording paper guide 6 Remove the stopper with minus screwdriver small size as showing in following Fig B 7 Remove the recording paper roller Ref No 10 Procedure 10 HOW TO REMOVE THE RECORDING PAPER GUIDE HOW TO CLEAN Clean the roller with cloth soaked in alcohol A PAPER GUIDE FRONT LID OPEN BUTTON Fig B STOPPER MINUS DRIVER PAPER UPPER GUIDE RECORDING PAPER ROLLER PAPER LOWER GUIDE STOPPE...

Page 102: ...UCTIONS KX F680BX KX F2681BX RECORDING PAPER COVER ARM ARM 2 1 3 Fig A Ref No 11 Procedure 10 11 HOW TO REMOVE THE RECODING PAPER COVER 1 Pull out the both arms as showing in following Fig A 2 Remove the recoding paper cover ...

Page 103: ...1 Remove the thermal head block 2 Pull out the 2 connectors 3 Remove the 2 screws A of thermal head to remove the guides 4 Replace the thermal head HOW TO CLEAN Clean the printing surface of thermal head with cloth soaked in alcohol THERMAL HEAD BLOCK CONNECTORS THERMAL HEAD GUIDE A A GUIDE ...

Page 104: ...DISASSEMBLED INSTRUCTIONS KX F680BX KX F2681BX Ref No 13 Procedure 13 HOW TO REMOVE THE DOCUMENT TRAY 1 Push the installing section in the direction of the arrow to remove the document tray 2 1 DOCUMENT TRAY ...

Page 105: ...n bridged portion 2 Remove remaining solder along pins using soldering iron as shown in below figure Soldering iron bridge Specified solder Flux Temporary soldering point PREPARATION ESOLDER Sparkle Solder 115A 1 115B 1 OR Almit Solder KR 19 KR 19RMA E Soldering iron Recommended power consumption will be between 30 W to 40 W Temperature of Copper Rod 662 50 F 350 10 An expert may handle 60 80 W ir...

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Page 130: ... 165 KX F680BX KX F2681BX EC1 EC2 EC3 EC4 EC5 EC6 EC7 EC9 EC10 EC11 EC12 EC13 EC8 TOOLS ...

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Page 132: ... 167 KX F680BX KX F2681BX 2 Upper Section 40 40 1 41 42 43 44 43 43 47 48 49 48 51 52 53 52 71 56 57 58 57 64 62 65 66 72 66 1 67 68 69 70 45 55 50 59 54 46 63 63 1 63 2 63 3 A A A B A A A ...

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Page 137: ... 1 100V 1A 10V 1A 10V 50 1H 50V 54 PFDE1008X GUIDE HEAD RIGHT 1 2E 250V 2 200V 1V 35V 1C 16V 1J 63V 55 PFDE1007X GUIDE HEAD LEFT 1 2H 500V 0J 6 3V 1E 25 25V 2A 100V 56 PFDG1013Z GEAR RECORDING PAPER ROLLER 1 57 PFDJ1005Y SPACER PLATEN 2 Ref No Part No Part Name Description Pcs 58 PFDN1003Z ROLLER RECORDING PAPER 1 59 PFJHS004Z THERMAL HEAD 1 CABINET MECHANICAL AND ELECTRICAL PARTS 60 Not Used 1 OP...

Page 138: ...M CHANGEOVER 1 DIGITAL BOARD PARTS 125 PFDG1010Z GEAR IDLER 1 126 Not Used PCB1 PFWP1F680BX DIGITAL P C BOARD ASS Y RTL 1 127 Not Used 128 Not Used 129 Not Used 130 PFJQ1004Z RX MOTOR 1 ICS 131 PFJS05R27Z CONNECTOR 5 PIN 1 132 PFUA1003Z CHASSIS RX GEAR 1 IC1 PFVIT7D56 IC 1 133 PFDG1011Z GEAR IDLER 1 IC2 PFWIF680BX IC 1 134 PFMD1006Z FRAME BOTTOM 1 IC3 PQVICX58257C IC S 1 135 Not Used IC4 PFVIKM29N...

Page 139: ...BT COIL S 1 R35 ERJ3GEYJ473 47K 1 R80 PQLQR2BT COIL S 1 R81 PQLQR2BT COIL S 1 R41 PQ4R10XJ563 56K 1 R82 PQLQR2BT COIL S 1 R42 PQ4R10XJ562 5 6K 1 R83 PQLQR2BT COIL S 1 R43 PQ4R10XJ821 820 1 R84 PQLQR2BT COIL S 1 R44 ERD25VJ222 2 2K 1 R45 PQ4R10XJ821 820 1 R46 ERD25VJ222 2 2K 1 R47 PQ4R10XJ223 22K 1 R48 PQ4R10XJ563 56K 1 CRYSTAL OSCILLATIONS R49 PQ4R10XJ473 47K 1 X1 PQVCJ2400N5Z CRYSTAL OSCILLATOR 1...

Page 140: ...C 4 ECEA1CKS100 10 S 1 C 5 ECEA1CK101 100 S 1 C 6 PQCUV1E104MD 0 1 S 1 C 7 PQCUV1E104MD 0 1 S 1 C 8 ECEA0JK221 220 S 1 C 9 ECEA1HKS010 1 S 1 C10 PQCUV1C224ZF 0 22 S 1 C11 PQCUV1C224ZF 0 22 S 1 C12 ECEA1CKS470 47 S 1 ANALOG BOARD PARTS C13 PQCUV1E104MD 0 1 S 1 C14 PQCUV1E104MD 0 1 S 1 PCB2 PFWP3F780BX ANALOG P C BOARD ASS Y RTL 1 C15 PQCUV1E224MD 0 22 S 1 C17 PQCUV1H102J 0 001 1 C19 PQCUV1E104MD 0 ...

Page 141: ...IN 1 R113 PQ4R10XJ103 10K 1 R114 PQ4R10XJ682 6 8K 1 R115 PQ4R10XJ822 8 2K 1 R116 ERDS2TJ5R6 5 6 1 SWITCHES R117 PQ4R10XJ123 12K 1 R118 PQ4R10XJ682 6 8K 1 SW271 PFSH1A02Z SWITCH SENSOR 1 R119 PQ4R10XJ121 120 1 SW272 PFSH1A02Z SWITCH SENSOR 1 SW273 PFSH1A02Z SWITCH SENSOR 1 R120 PQ4R10XJ391 390 1 SW274 PQSS2A27Z SWITCH DIALING MODE 1 R125 PQ4R10XJ105 1M 1 SW275 ESE14A211 SWITCH HOOK 1 R126 PQ4R10XJ1...

Page 142: ...0 01 S 1 R211 PQ4R10XJ224 220K 1 C156 ECEA1AU101 100 1 R212 PQ4R10XJ104 100K 1 C157 ECUV1H332KBV 0 0033 1 R213 PQ4R10XJ104 100K 1 C158 PQCUV1C683MD 0 068 1 R214 PQ4R10XJ224 220K 1 R215 PQ4R10XJ222 2 2K 1 C160 ECUV1H272KBV 0 0027 1 R216 PQ4R10XJ332 3 3K 1 C164 PQCUV1C683MD 0 068 1 R217 PQ4R10XJ000 JUMPER 0 1 C165 ECUV1H561JCV 560P S 1 R218 PQ4R10XJ473 47K 1 C166 PQCUV1H105JC 1 S 1 R219 ERJ3GEY0R00 ...

Page 143: ...WITCH ONE TOUCH S 1 C261 PQCUV1E104MD 0 1 S 1 S308 PQSH1A105Z SWITCH ONE TOUCH S 1 C262 ECEA0JKS470 47 1 S309 PQSH1A105Z SWITCH START COPY SET S 1 C263 ECUV1C104KBV 0 1 1 S310 PQSH1A105Z SWITCH ERASE S 1 S311 PQSH1A105Z SWITCH LOWER S 1 C271 ECUV1H103KBV 0 01 1 S312 PQSH1A105Z SWITCH ONE TOUCH S 1 C272 PQCUV1H103KB 0 01 S 1 S313 PQSH1A105Z SWITCH VOLUME S 1 C273 PQCUV1H103KB 0 01 S 1 S314 PQSH1A10...

Page 144: ...4 PQ4R10XJ181 180 1 R801 PQ4R10XJ202 2K 1 R335 PQ4R10XJ181 180 1 R802 PQ4R10XJ202 2K 1 R336 PQ4R10XJ181 180 1 R803 PQ4R10XJ100 10 1 R337 PQ4R10XJ181 180 1 R804 PQ4R10XJ242 2 4K 1 R338 PQ4R10XJ181 180 1 R805 PQ4R10XJ272 2 7K 1 R339 PQ4R10XJ181 180 1 R806 PQ4R10XJ242 2 4K 1 R807 PQ4R10XJ272 2 7K 1 R340 PQ4R10XJ181 180 1 R808 PQ4R10XJ471 470 1 R341 PQ4R10XJ181 180 1 R809 PQ4R10XJ471 470 1 R350 PQ4R10...

Page 145: ...PFVDEG01C DIODE SI 1 R106 ERDS2FJ100 10 1 D104 MA165 DIODE SI S 1 R107 ERDS2FJ100 10 1 D105 MA4220 DIODE SI S 1 R108 ERDS2FJ150 15 1 D201 MA6D49 DIODE SI S 1 R109 ERDS1SJ470 47 1 D203 PQVDERA81004 DIODE SI 1 D204 MA4075M DIODE SI S 1 R121 PQ4R10XJ103 10K 1 D205 MA165 DIODE SI S 1 R122 PQ4R10XJ471 470 1 R123 PQ4R10XJ182 1 8K 1 R124 PQ4R10XJ181 180 1 R125 PQ4R10XJ101 100 1 R126 PQ4R10XJ562 5 6K 1 CO...

Page 146: ...XTENTION CORD 8 PIN 1 EC 4 PQZZ6K14Z EXTENTION CORD 6 PIN 1 EC 5 PQZZ2K13Z EXTENTION CORD 2 PIN 1 EC 6 PQZZ9K7Z EXTENTION CORD 9 PIN 1 EC 7 PQZZ11K8Z EXTENTION CORD 11 PIN 2 EC 8 PQZZ5K6Z EXTENTION CORD 5 PIN 1 EC 9 PFZZ5K13Z EXTENTION CORD 5 PIN 1 EC10 PQZZ2K6Z EXTENTION CORD 2 PIN 1 EC11 PQZZ10K4Z EXTENTION CORD 10 PIN 1 EC12 PQZZ8K18Z EXTENTION CORD 8 PIN 1 EC13 PQZZ2K12Z EXTENTION CORD 2 PIN 1...