Canon PC400, Service Handbook

Page 1: ...COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON SERVICE HANDBOOK REVISION 0 FY8 23AV 000 JAN 1998...

Page 2: ...MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPART...

Page 3: ...ss for Dirt and Scratches 3 2 4 Checking the Lens Array for Dirt 3 2 5 Checking the Transfer Charging Roller 3 2 6 Checking the Feeding Assembly 3 2 7 Checking the Copy Paper 3 2 8 Checking the Durabl...

Page 4: ...mbly 5 2 3 Fixing Delivery Assembly 5 3 B Feeding Faults 5 4 1 Double Feeding 5 4 2 Wrinkles 5 4 CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS A Sensors and Solenoids 6 1 B Switches 6 2 C La...

Page 5: ...N JAPAN IMPRIME AU JAPON iii CHAPTER 7 SELF DIAGNOSIS Self Diagnosis 7 1 APPENDIX A General Timing Chart A 1 B Signals Abbreviations List A 3 1 Signals A 3 2 Abbreviations A 4 C General Circuit Diagra...

Page 6: ...COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON iv...

Page 7: ...N A Periodically Replaced Parts The machine does not have parts which must be replaced on a periodical basis B Durables The machine does not have parts which are classified as durables C Periodical Se...

Page 8: ...re the place is controlled to the specifications shown in Table 1 1D a Avoid direct rays of the sun b Avoid areas subjected to appreciable vibration c Do not drop or subject it to impact Normal 9 10 o...

Page 9: ...protective box the inside may become extremely hot 2 Avoid areas of high or low temperature humidity and areas where these elements tend to change rapidly for example near air conditioners or heaters...

Page 10: ...the drum resulting in copies with white spots or vertical lines Leave the copier alone for some time for possible recovery to avoid residual memory which results in white spots or vertical lines howe...

Page 11: ...the middle Clean the parts Is the problem corrected by the density correction switch Is optimum density obtained by adjusting the intensity of light See Is gray scale No 9 barely noted See Note 2 Che...

Page 12: ...re not to touch the roller or leave oil Cartridge Transfer charging roller Parts Tools Solve Remarks Inlet guide Solvent Fixing assembly Parts Tools Solve Remarks Lens array Cotton wad Do not use the...

Page 13: ...t Sheet is copied Figure 2 1A The leading edge non image width is determined by the position of the white paint found behind the copyboard glass Figure 2 2A 2 Image Leading Edge Margin point of detect...

Page 14: ...lty control panel PCB 2 Set the meter to the 200 k range and measure C between the terminal of VR604 and the terminal of R614 on the detached control panel PCB see Figure 2 1B 3 Likewise measure C bet...

Page 15: ...nter 3 Set the density correction switch SW606 to the center PC420 430 FC220 4 Set the Test Sheet NA3 NB3 NA2 and make a copy 5 Check if the copy is free of fogging and gray scale No 9 No 10 if NB3 is...

Page 16: ...1 Switch the copier OFF 2 Detach the control panel cover 3 Turn VR602 and VR603 on the control panel PCB fully clockwise 4 Place a newspaper over the AE light receiving section of the copyboard and c...

Page 17: ...op shorting the jumper wires 8 Set the digital multimeter to the 20V DC range and turn VR602 AE offset adjustment until the voltage between the anode side of the diode D606 and JP607 GND is 4 0 0 1 V...

Page 18: ...ted 12 Switch the copier ON once again 13 Set the density correction switch SW606 to the center of the three settings 14 Make sure that the AE indicator is ON 15 Set the newspaper used in step 4 on th...

Page 19: ...vide curtains e Make sure the site is well ventilated f Make sure the floor is level Check the site to see if it meets the above requirements 2 Checking the Documents You must first check to see if a...

Page 20: ...Roller Check the transfer charging roller for scratches or other abnormalities 6 Checking the Feeding Assembly Check the feeding assembly for dirt If dirt is found clean it with a moist cloth 7 Checki...

Page 21: ...e it several times Figure 3 2A 2 Set the cartridge back into the copier and make copies a If the copies are normal The user may use the cartridge for some time more however advise the user to procure...

Page 22: ...umes a high electrical resistance resulting in poor contrast c Condensation in the pick up feeding assembly can cause faulty paper transport d Condensation in the lower roller of the manual pick up me...

Page 23: ...CHAPTER 3 IMAGE TROUBLESHOOTING 3 5...

Page 24: ...3 6 CHAPTER 3 IMAGE TROUBLESHOOTING B Samples of Image Faults not available...

Page 25: ...r image on the pho tosensitive drum more or less normal before transfer Be sure to check quickly to protect the drum against light NO Go to step 5 Transfer charging roller 3 Is the transfer charging r...

Page 26: ...oner image on the photosensitive drum before transfer have uneven density YES 1 Replace the cartridge 2 Replace the scanning lamp unit Transfer charging roller NO Check the transfer charg ing roller C...

Page 27: ...ut it back in Is the problem corrected YES End NO Replace the cartridge Cause Step Checks YES NO Remedies Fixing assembly 1 Press the Copy Start key and switch the copier OFF in the middle of operatio...

Page 28: ...pyboard rail Check the scanning lamp for flickering and check the presence absence of a developing bias Scanning lamp Developing bias NO 13 The back of the copy is soiled Cause Step Checks YES NO Reme...

Page 29: ...ply PCB Fixing heater NO See The fixing heater fails to operate 15 The copy has faulty leading edge registration blank area much too wide 16 The copy has faulty leading edge registration blank area to...

Page 30: ...1 Does the scanning lamp flicker YES Replace the scanning lamp unit Cartridge 2 Replace the cartridge Is the problem corrected YES End High voltage transformer Check the high voltage transformer DC co...

Page 31: ...Drum drive assembly 5 Is the drum drive gear rotating normally NO Check the drum drive assembly High voltage transformer 6 Are the primary charging terminal at the front left of the cartridge and the...

Page 32: ...3 14 CHAPTER 3 IMAGE TROUBLESHOOTING...

Page 33: ...sufficiently cool Measure the voltage between J603 1 and J603 2 Is it about 3 2 V or more NO Check the wiring from the DC controller DC power supply PCB to the ther mistor TH1 if normal replace the fi...

Page 34: ...reverse after copying operation has started and move forward after it has reached the copy board start position YES Replace the DC con troller DC power supply PCB Copyboard drive assembly Copyboard g...

Page 35: ...eafter YES See E0 Top cover Delivery assembly cover 3 Are the top cover and delivery assembly cover closed properly NO Close the top cover and delivery assembly cover Power supply voltage 4 Is the rat...

Page 36: ...lenoid SL1 PC400 FC200 4 Set the meter to the 30VDC range Does the voltage between J201 6 and J201 7 on the DC controller DC power supply PCB change to about 24 V at pick up timing YES Check the sprin...

Page 37: ...the DC controller DC power supply PCB Cause Step Checks YES NO Remedies Main motor M1 1 Is the main motor rotating NO See The main motor fails to rotate Copyboard Copyboard drive assembly 2 Push the...

Page 38: ...to the DC controller DC power supply PCB if normal replace the DC controller DC power supply PCB Cause Step Checks YES NO Remedies Control panel PCB 1 Replace the control panel PCB Does the indicator...

Page 39: ...NG PAPER FEED PROBLEMS A Copy Paper Jams Jams can be classified according to location within the copier q Pick up assembly w Separation feeding assembly e Fixing delivery assembly The discussions that...

Page 40: ...the pick up roller deformed or worn YES Replace the pick up roller Spring for pick up control Spring clutch PC420 430 FC220 NO 1 Check the spring 2 Check the spring clutch Cause Step Checks YES NO Rem...

Page 41: ...he separation feeding assembly Fixing assembly inlet guide 2 Is the inlet guide soiled with foreign matter or toner Clean it YES Delivery sensor lever 3 Does the delivery sensor lever move smoothly Co...

Page 42: ...1 Switch the copier OFF while the copy paper is moving through the feeding assembly Is the paper wrinkled at the time Or is it moving askew YES Check the pick up assem bly Check the registration rolle...

Page 43: ...2 Q901 Q801 Q131 PD601 PD602 SL1 6 Figure 6 1A Symbol Name Notation Description Photointerrupter Photodiode Solenoid Q131 Q801 Q901 Q902 PD601 PD602 SL1 SL2 Pick up assembly paper sensor Delivery asse...

Page 44: ...ND FUNCTIONS OF ELECTRICAL PARTS B Switches Figure 6 1B SW2 SW604 SW606 SW1 Symbol Name Notation Description Switch Switch SW1 SW2 SW604 SW606 Top cover switch Delivery assembly door switch Power swit...

Page 45: ...PARTS 6 3 C Lamp Heater Motor and Others M1 FU2 TH1 H1 Figure 6 1C Symbol Name Notation Description Heater Motor Thermistor Thermal fuse H1 M1 TH1 FU2 Fixing heater Main motor Fixing heater temperatur...

Page 46: ...oller DC power supply PCB Control panel PCB Scanning lamp PCB Delivery sensor PCB Motor rotation sensor PCB Copyboard position sensor PCB Controls sequence supplies DC power controls scanning lamp ON...

Page 47: ...ouch those VRs and check pins not discussed herein they are for factory use only and require special tools and high precision for adjustment Note 1 VRs that may be used in the field 2 VRs that must no...

Page 48: ...st the AE offset use it only after replacing the scanning lamp unit intensity sensor AE sensor or control panel PCB VR603 Use it to adjust the AE gain use it only after replacing the scanning lamp uni...

Page 49: ...displayed PC420 430 FC220 or the Jam indicator PC400 FC200 remains ON for about 0 5 sec thereafter the power goes out 7 Code Cause Description Thermistor TH1 faulty Fixing heater H1 faulty DC control...

Page 50: ...DC power supply PCB faulty The copyboard position sensor Q902 goes ON when copying operation starts The copyboard position sensor Q902 is ON 0 8 sec after copying operation has started The copyboard...

Page 51: ...nning lamp LA1 LA8 Fixing heater H1 Primary AC bias Primary DC bias Developing AC bias Developing DC bias Transfer Pick up sensor Q131 Registration solenoid SL1 Sequence Copyboard STBY INTR CBRV STOP...

Page 52: ...20 to 560V Cleaning mode Measurement mode 1 sec CBFW 13 Main motor M1 Document position sensor Q902 Copyboard drive solenoid SL2 Scanning lamp LA1 LA8 Fixing heater H1 Primary AC bias Primary DC bias...

Page 53: ...N SIGNAL 1 DGT2 OSCILLATION SIGNAL 2 HTRD FIXING HEATER DRIVE COMMAND HVPAC PRIMARY AC BIAS ON COMMAND HVPDC PRIMARY DC BIAS ON COMMAND HVPHO PRIMARY DC BIAS HIGH OUTPUT COMMAND HVTDC TRANSFER DC BIAS...

Page 54: ...A 4 APPENDIX 2 Abbreviations INTR INITIAL ROTATION LSTR LAST ROTATION CBFW COPYBOARD FORWARD CBRV COPYBOARD REVERSE STBY STANDBY...

Page 55: ...ensity sensor Main motor Delivery sensor N C N C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 J202 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 GND 5V DGT2 DGT0 GND SEG2 S_CHECK DGT1 PWSON VR KEYR0 TH1 LID...

Page 56: ...801 1 2 3 1 2 3 4 J603P J621P AE sensor Intensity sensor J621F J603F Control panel PCB DC controller DC power supply PCB Scannig lamp PCB Door switch Delivery door switch 1 2 3 1 2 3 1 3 GND 5V DGT2 D...

Page 57: ...standard tools set The tools are categorized as follows A tools that must be carried by each service person B tools that must be carried by a group of about five service persons C tools that must be...

Page 58: ...locally Isopropyl alcohol may be substituted 2 Solvent Cleaning e g metal oil or toner dirt Hydrocarbon fluorine chlorine family Alcohol Do not bring near fire Procure locally 3 Heat resisting grease...

Page 59: ...ble Copying speed Copy size A4 LTR LGL max postcard min 52 to 128 g m2 Tracing paper Colored paper OHP film Postcard vertical Labels Wrapping paper 63 g m2 Copy paper type Two sided copying Overlay co...

Page 60: ...n reference only 0 2 kWh reference only Ozone 0 01 ppm or less average over 8 hr 71 dB Copying Standby Noise 14 1 in 359 mm Width Dimensions Depth Height 15 7 in 402 mm 4 1 in 108 mm Weight including...

Page 61: ...y OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION CANON INC Printed in Japan REVISION 0 JAN 1998 23715 5 1 Hakusan 7 chome Toride shi Ibaraki...

Page 62: ...PRINTED IN JAPAN IMPRIME AU JAPON 0198M2 01 1 This publication is printed on 70 reprocessed paper...