Canon NP6317 Service Handbook
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Canon NP6317 Service Handbook

Canon NP6317 Service Handbook

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REVISION 0
FY8-23B5-000
APR. 1999
COPYRIGHT © 1999 CANON INC.
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

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  • Page 1 REVISION 0 FY8-23B5-000 APR. 1999 COPYRIGHT © 1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 IMPORTANT THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD. SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER.

  • Page 3: Table Of Contents

    CONTENTS CHAPTER 1 MAINTENANCE AND INSPECTION A. PERIODICALLY REPLACED D. PERIODIC SERVICING PARTS ..........1-1 SCHEDULE .........1-4 B. DURABLE PARTS......1-2 E. BASIC IMAGE ADJUSTMENT C. BASIC PROCEDURE FOR PROCEDURE ......1-5 PERIODIC SERVICING ....1-3 POINTS TO CHECK FOR PERIODIC MAINTENANCE ..1-6 CHAPTER 2 STANDARDS AND ADJUSTMENT A.
  • Page 4 CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS A. PAPER JAMS .......6-1 B. INCORRECT PAPER FEED OPERATION ........6-5 CHAPTER 7 SERVICE MODE A. Outline ..........7-1 C. Guide to Service Mode ....7-2 B. Using the Service Mode....7-1 CHAPTER 8 SELF DIAGNOSIS APPENDIX A. GENERAL TIMING CHART ..A-1 C.

  • Page 5: Periodically Replaced Parts

    CHAPTER 1 MAINTENANCE AND INSPECTION CHAPTER 1 MAINTENANCE AND INSPECTION PERIODICALLY REPLACED PARTS To maintain the copier at its peak performance, the parts listed in the following chart must be replaced periodically. Although the deterioration of a part may not be visible, it can seriously hamper the performance of the copier if not replaced on schedule.

  • Page 6: Durable Parts

    CHAPTER 1 MAINTENANCE AND INSPECTION DURABLE PARTS The values shown in the table below indicate the expected average life (number of copies) of parts which may require replacement at least once during the warranty period due to deterioration or damage but which can be simply replaced to restore the performance of the copier. as of March 1999 Service life Description...
  • Page 7 CHAPTER 1 MAINTENANCE AND INSPECTION BASIC PROCEDURE FOR PERIODIC SERVICING Note: i. Perform periodic servicing after every 15,000 copies, as a general rule. ii. Before making a service call, check the service log and take along any replacement parts that are likely to be needed: Procedure Check Remarks...
  • Page 8 CHAPTER 1 MAINTENANCE AND INSPECTION PERIODIC SERVICING SCHEDULE Note: Do not use solvents or oils other than those specified. : Clean : Replace : Lubricate : Adjust : Check Unit Description Periodic servicing Remarks Every * Every 15,000 30,000 copies copies External Copyboard glass...
  • Page 9 BASIC IMAGE ADJUSTMENT PROCEDURE Image adjustment should be per- Adjust the image by the following formed using the following settings: procedure when the photosen- sitive drum has been replaced. 1. Manual (non AE) exposure Make this adjustment with the 2. Density cursor setting : 5 upper front panel and front door 3.
  • Page 10 POINTS TO CHECK FOR PERIODIC MAINTENANCE Optical path Copyboard/Scanner Location Tool/Cleaner Action/Remarks Location Tool/Cleaner Action/Remarks Lens Blower brush or Clean with a Copyboard glass Alcohol Cleaning alcohol and blower brush. Dust-proofing Reflectors Blower brush Cleaning lint-free paper If dirt cannot be glass Mirrors 1, 2 and Blower brush or...

  • Page 11: Chapter 2 Standards And Adjustment

    + , 9 : CHAPTER 2 STANDARDS AND ADJUSTMENT CHAPTER 2 STANDARDS AND ADJUSTMENT MECHANICAL Leading Edge Non-Reproduced Area There is a white strip on the bottom of the copyboard glass in the position shown in the figure below. If bias is being applied to the grid of the primary corona while the scanner is passing over the white strip, the leading edge of the copy will be reproduced blank.
  • Page 12 CHAPTER 2 STANDARDS AND ADJUSTMENT Leading Edge Registration Make adjustments in the service mode (C2) so that the distance shown is 10.0 ±1.5 mm when the test sheet is copied in DIRECT. Note: Adjust the leading edge non-reproduced area before making this adjustment. 10.0 ±1.5 mm Figure 2-3 A higher setting in the service mode (C2) increases the leading edge margin.
  • Page 13 CHAPTER 2 STANDARDS AND ADJUSTMENT b. Multifeeder Feeding The standard near side registration on a DIERCT copy of the test sheet is 10.0 ±2 mm. 10 ±2 mm Figure 2-6 Loosen the screw, and adjust the multifeeder side guide by sliding it. Then, tighten the screw. Screw Side guide Figure 2-7...
  • Page 14 CHAPTER 2 STANDARDS AND ADJUSTMENT Installing the Lens Drive Cable This unit has been accurately adjusted at the factory with special gauges. Do not remove parts other than those shown below, nor loosen any other screws. Lens pulley Lens pulley fixing plate 4 turns Mounting screws...
  • Page 15 CHAPTER 2 STANDARDS AND ADJUSTMENT Installing the Scanner Drive Cable Pulley 1 Pulley 3 Top groove Lower grove Scanner pulley Pulley 2 Mark the position 4 turns Screws B Screw A Figure 2-9...
  • Page 16 CHAPTER 2 STANDARDS AND ADJUSTMENT Adjusting the Tension of the Scanner Drive Cable Move the mirror 1 mount to the home position (start position). As shown in Figure 2-10, pull at point [A] (approximate center) of the free cable with a spring gauge so that the cable lengths touch each other.
  • Page 17 CHAPTER 2 STANDARDS AND ADJUSTMENT Adjusting the Position of the Mirrors and Lens Adjusting the Position of the No.1 Mirror Mount (length of optical path between mirrors 1 and 2) Adjust the tension of the scanner drive cable before making this adjustment. Adjust the posi- tion of the scanner (mirror 1) by altering the tension of the scanner drive cable.
  • Page 18 J K L M N O X Y Z CHAPTER 2 STANDARDS AND ADJUSTMENT For reference: If the distance between the mirrors is short, the image will be enlarged. If the distance is long, the image will be reduced. No.1 mirror mount Fixing screws (front) Mirror drive cable...
  • Page 19 CHAPTER 2 STANDARDS AND ADJUSTMENT Adjusting the Direct Copy Ratio (lens position) 1) Make a Direct copy. 2) Check the copy ratio. If the copy ratio is not appropriate, perform the following steps: 3) Enter service mode C10 (lens home position adjustment). 4) Try increasing or decreasing the value using the +/- keys.
  • Page 20 CHAPTER 2 STANDARDS AND ADJUSTMENT No. 4/5 Mirror Mount The screws [A] that keeps the No. 4/5 mirror mount [1] to the lens base plate must not be loosened in the field. If they are loosened, readjusting the mirror mechanical axis is not possible in the filed.
  • Page 21 CHAPTER 2 STANDARDS AND ADJUSTMENT 10. Installation Position of the Transfer Guide When installing the transfer guide, ensure that the clearance between the transfer assembly roller and the photosensitive drum is about 1.8 ±0.2 mm, as shown in Figure 2-16. Photosensitive drum Lower transfer guide Transfer assembly roller...
  • Page 22 CHAPTER 2 STANDARDS AND ADJUSTMENT 12. Installing the Corona Wires in the Primary and Transfer Corona Assemblies Primary corona assembly (about 2 mm) Trasnfer corona assembly (about 5 mm) Figure 2-18 • The corona wire must not be bent or twisted, and the gold plating must not be peeling off. •...
  • Page 23 ? L M CHAPTER 2 STANDARDS AND ADJUSTMENT 14. Adjusting the Fixing Assembly Roller Pressure (adjusting the nip width) The nip width should conform to the dimension shown in Table 2-1. Adjust the nip width with the bolts if it is out of standard. Direction of advance of paper...
  • Page 24 CHAPTER 2 STANDARDS AND ADJUSTMENT 15. Degree of Arching (multifeeder) Make the following adjustments if the copy paper picked up from the multifeeder moves askew or wrinkles are noted on the leading edge of the copy paper; the adjustments are made by changing the degree of arching of the copy paper between the multifeeder pick-up roller and the registration roller.
  • Page 25 CHAPTER 2 STANDARDS AND ADJUSTMENT ELECTRICAL List of PCBs/VRs/LEDs/Check Pins Variable resistors, LEDs and check pins which are used for adjustments in the field are listed below. VRs and check pins not listed here are used only for factory adjustments, which require special tools and measuring instruments, as well great care and precision.
  • Page 26 CHAPTER 2 STANDARDS AND ADJUSTMENT AE Adjustment Make the following adjustments when the AE sensor or the DC controller PCB has been re- placed. 1) Remove the potentiometer cover at the back of the left cover. 2) Set the power switch ON. •...
  • Page 27 CHAPTER 2 STANDARDS AND ADJUSTMENT Lamp Brightness Adjustment (50%, 200%) Before adjusting the lamp brightness (50%, 200%), adjust the optimum exposure in the direct reproduction ratio (F5, w/o AE, copy density knob is centered, using the NA3 chart). Then, per- form the adjustment below.
  • Page 28 CHAPTER 2 STANDARDS AND ADJUSTMENT Checking Photointerrupters Purpose Multifeeder paper sensor Pre-registration paper Right door sensor (MFPD) sensor (PDP1) (RDC) (+) lead J311-5 J304-8 J311-7 (-) lead J311-4 J304-7 J311-6 Check; operation is normal With the copier in With the copier in Open and close the right if the meter needle swings to STANDBY, raise and...

  • Page 29: Chapter 3 Function And Arrangement Of The

    CHAPTER 3 FUNCTION AND ARRANGEMENT OF THE ELECTRICAL PARTS CHAPTER 3 FUNCTION AND ARRANGEMENT OF THE ELECTRICAL PARTS SENSORS, FUSES AND LAMPS LA731~LA738 Figure 3-1 Symbol Name Code Function Black toner level Senses the toner in the development assembly sensor Multifeeder paper sensor Photointerrupter Pre-resistrarion paper sensor...

  • Page 30: Clutches, Solenoids, Fans, Motors And Heaters

    CHAPTER 3 FUNCTION AND ARRANGEMENT OF THE ELECTRICAL PARTS CLUTCHES, SOLENOIDS, FANS, MOTORS AND HEATERS Figure 3-2 Symbol Name Code Function Clutch Registration roller clutch Solenoid Pick-up roller clutch solenoid Lens drive solenoid Multifeeder solenoid Blank solenoid Motor Main motor Scanner motor Mirror motor Fan unit...

  • Page 31: Switches, Circuit Breakers, Counters, Etc

    CHAPTER 3 FUNCTION AND ARRANGEMENT OF THE ELECTRICAL PARTS SWITCHES, CIRCUIT BREAKERS, COUNTERS, ETC. CNT1 Figure 3-3 Symbol Name Code Function Switch Power switch Microswitch Cassette size sensor Front door switch Thermoswitch Fixing assembly over temperature protec- Total counter Counter CNT1...

  • Page 32: Pcbs

    CHAPTER 3 FUNCTION AND ARRANGEMENT OF THE ELECTRICAL PARTS PCBS. [11] [10] Figure 3-4 Symbol Name Function DC controller PCB Controlling operations Power supply assembly Powering the fixing roller heater and supplying DC power to the copier Measuring the document density AE sensor PCB Contolling scanning lamp voltage Lamp regulator PCB...
  • Page 33 CHAPTER 4 IMAGE TROUBLESHOOTING CHAPTER 4 IMAGE TROUBLESHOOTING INITIAL CHECK Checking the Installation Environment a. The line voltage should be within 10% of the voltage on the rating plate. b. The copier should not be installed in a hot or humid location (such as near a water faucet or humidifier), a cold area, near an open flame, or in a dusty location.
  • Page 34 CHAPTER 4 IMAGE TROUBLESHOOTING Check the Copy Paper a. Is copy paper recommended by Canon being used? b. Has the copy paper absorbed moisture? Open a now package of copy paper and make copies, then compare the copies. Others When a copier is brought in to a warm room from a warehouse or other cold area in winter, particularly when it is being installed, condensation may form inside the copier and cause various problems.
  • Page 36 NOTE: The samples are created intentionally. The NA-3 Test Sheet was copied in the direct mode in A3 and printed with a reduction of about 19%; actual images may be somewhat different.

  • Page 37: Troubleshooting Of Image Faults

    CHAPTER 4 IMAGE TROUBLESHOOTING TROUBLESHOOTING OF IMAGE FAULTS Light image (halftone areas only) Cause/Problem Procedure Check Result Action area Does the image quality improve after the End. basic adjustment procedure is followed? AE adjust- Is the image lighter is when a copy is Perform AE adjustment.
  • Page 38 2. Explain to the user that if paper not recommended by Canon is being used, the image quality may be slightly poorer. Is the resistance between the metal part of the 1. Check if the lower trans- •...
  • Page 39 CHAPTER 4 IMAGE TROUBLESHOOTING Uneven density (front side dark) Uneven density (front side light) Cause/Problem Procedure Check Result Action area Primary Does the image quality improve after the End. corona wire basic adjustment procedure is followed? height Developing Is the spacer roller of the developing as- Check the pressure ap- assembly sembly pressing against the photosensitive...
  • Page 40 CHAPTER 4 IMAGE TROUBLESHOOTING Fogging (overall) Cause/Problem Procedure Check Result Action area Does the image quality improve after the End. basic adjustment procedure is followed? Dirt on the Does the image improve after the scanning End. scanner lamp, reflectors, mirrors, lens and dust- proofing glass are cleaned? Pre-exposure Does the pre-exposure lamp go ON during...
  • Page 41 CHAPTER 4 IMAGE TROUBLESHOOTING Dark lines (thin lines in paper feed direction) Cause/Problem Procedure Check Result Action area Press the COPY START key and switch Check from step 3. the copier OFF to stop the paper on the feeder. Are there black lines on the copy image before the paper passes through the fixing assembly? Photosensitive...
  • Page 42 CHAPTER 4 IMAGE TROUBLESHOOTING 10. White strips (in paper feed direction) 11. Narrow white lines (in paper feed direction) Cause/Problem Procedure Check Result Action area Fixing assembly Press the COPY START key with the 1. Clean the upper and copyboard cover open, then switch the copier lower inlet guides of the OFF to stop the copy paper on the feeder.
  • Page 43 CHAPTER 4 IMAGE TROUBLESHOOTING 12. White strips (in cross feed direction) Cause/Problem Procedure Check Result Action area Developing Do the white strips occur at intervals of 1.Clean the developing assembly approx. 63mm? (Scratches on developing cylinder spacer rollers. cylinder) 2.Clean the surface of the developing cylin- der.
  • Page 44 CHAPTER 4 IMAGE TROUBLESHOOTING 13. Toner marks on back of copy paper Cause/Problem Procedure Check Result Action area Press the COPY START key, and switch Check from step 3. the copier OFF while the copy paper is on the feeder. Are there any toner marks on the back of the copy paper? Developing...
  • Page 45 Action area Original Is the original set correctly? Set the original correctly. Copy paper Is copy paper recommended by Canon be- Check if the recom- ing used? mended paper is being used. If the results are then satisfactory, recom- mend that the customer use it.
  • Page 46 CHAPTER 4 IMAGE TROUBLESHOOTING 18. Blurred image Cause/Problem Procedure Check Result Action area Scanner drive Does the cable overlap as it winds around 1.Re-tension the cable. cable the drive capstan while the scanner is 2.Replace the drive moving? Is the tension of the cable alter- cable if it is twisted or nately too slack and too tight? frayed.
  • Page 47 CHAPTER 4 IMAGE TROUBLESHOOTING 20. Unsharp (Unforcussed) image Cause/Problem Procedure Check Result Action area Original Is the original lying flat on the glass? 1.Check if the copyboard copy is wrapped. 2.Explain to the user how to place the origi- nal on the copyboard. Copyboard Is any oil or other substance adhering to Clean the copyboard...
  • Page 48 CHAPTER 4 IMAGE TROUBLESHOOTING 22. Black image Cause/Problem Procedure Check Result Action area Does the scanning lamp go ON during Check according to copying? "Scanning lamp does not go ON." 4-16...
  • Page 49 CHAPTER 5 OPERATION TROUBLESHOOTING CHAPTER 5 OPERATION TROUBLESHOOTING TROUBLESHOOTING OF MALFUNCTION "E000, E003 and E004" indication Cause/Problem Procedure Check Result Action area Cancel the indication. Open the front Refer to the sub-section cover and delivery assembly door; then, "Fixing roller heater insert a door switch actuator into the door does not operate."...
  • Page 50 CHAPTER 5 OPERATION TROUBLESHOOTING "E202" indication Cause/Problem Procedure Check Result Action area Set the power switch OFF, remove the Refer to the sub-section copyboard glass, and move the scanner "Scanner does not fully to the right manually. Switch the move." power ON.
  • Page 51 CHAPTER 5 OPERATION TROUBLESHOOTING "E220" indication Cause/Problem Procedure Check Result Action area Scanning Check the scanning lamp (LA1) does not Refer to the sub-section lamp (LA1) light when copying. "Scanning lamp does not light." Lamp Check if the scanning lamp (LA1) lights Replace the DC control- regulator when copier is in standby.
  • Page 52 CHAPTER 5 OPERATION TROUBLESHOOTING "E400" indication Cause/Problem Procedure Check Result Action area Does the problem disappear when the End. (Check the wiring power is switched OFF and then ON between the DC control- again? ler and the ADF control- ler.) Circuit Does the problem disappear when circuit End.
  • Page 53 CHAPTER 5 OPERATION TROUBLESHOOTING 10. "E500" indication Cause/Problem Procedure Check Result Action area Wiring Does the problem disappear when the End. (Check the wiring power is switched OFF and then ON between the DC control- again? ler PCB and the sorter controller PCB.) Circuit Does the problem disappear when circuit...
  • Page 54 CHAPTER 5 OPERATION TROUBLESHOOTING 11. "E802" (main switch auto shut-off mechanism) Cause/Problem Procedure Check Result Action area Main switch Try operating the main switch by hand. Replace the main switch. (SW1) Does it operate normally? Wiring Check the wiring from the DC controller Correct the wiring.
  • Page 55 CHAPTER 5 OPERATION TROUBLESHOOTING 12. AC power is not supplied Cause/Problem Procedure Check Result Action area Power plug Is the power cord plugged into the outlet? Plug it in. Door switches Are the front door and the delivery assem- Close the door and the bly closed completely? delivery assembly.
  • Page 56 CHAPTER 5 OPERATION TROUBLESHOOTING 13. DC power is not supplied Cause/Problem Procedure Check Result Action area Overcurrent Does the problem disappear when the End. (Be sure to find out protection copier is switched OFF and the ON again? why the protection cir- circuit cuit operated.) Is AC line voltage present between termi-...
  • Page 57 CHAPTER 5 OPERATION TROUBLESHOOTING 14. Drum does not rotate Cause/Problem Procedure Check Result Action area Drum unit Is the drum unit properly installed? Insert properly. Torque limiter Is copy paper or foreign matter jammed Remove the foreign mat- between the drum and the cleaning unit? ter.
  • Page 58 CHAPTER 5 OPERATION TROUBLESHOOTING 16. Paper is not picked up from multifeeder Cause/Problem Procedure Check Result Action area Sensor arm Is the arm of the pre-registration paper Replace the sensor arm. sensor (Q2) broken? Does it move smoothly? Pre-registra- Is the pre-registration paper sensor (Q2) Replace pre-registration tion paper functioning normally?
  • Page 59 CHAPTER 5 OPERATION TROUBLESHOOTING 18. Scanner does not move Cause/Problem Procedure Check Result Action area Drive cable Is the scanner drive cable installed cor- Install the cable cor- rectly? rectly. Foreign object Switch the copier OFF, hold the back of Check for dirt or foreign in the path of the scanner and move it back and forth.
  • Page 60 CHAPTER 5 OPERATION TROUBLESHOOTING Engaged Connecting gear Scanner drive capsten Figure 5-1 5-12...
  • Page 61 CHAPTER 5 OPERATION TROUBLESHOOTING 19. Pre-exposure lamp does not light Cause/Problem Procedure Check Result Action area Pre-exposure Set the meter to the DC 30V range. Con- Replace the pre-exposure lamp PCB nect the leads to J307-1 (+) and J307-2 (-). lamp PCB.
  • Page 62 CHAPTER 5 OPERATION TROUBLESHOOTING 21. Fixing roller heater does not operate Cause/Problem Procedure Check Result Action area Disconnect connector J106 (3P) from the Go to step 3. AC driver/DC power supply PCB. Set the meter to the 1kΩ range. Connect the leads to J106-1 and J106-3.
  • Page 63 CHAPTER 5 OPERATION TROUBLESHOOTING 22. Lens does not move Cause/Problem Procedure Check Result Action area Lens solenoid Switch the power OFF and remove the Check the wiring from (SL2) rear cover. Set the power switch ON. Does the DC controller PCB to the lens solenoid (SL2) go ON? the lens solenoid (SL2).
  • Page 64 CHAPTER 5 OPERATION TROUBLESHOOTING indicator does not go ON Cause/Problem Procedure Check Result Action area Cassette size Does the indicator remain OFF when the Check the wiring from sensor PCB cassette is removed? the DC controller PCB to the cassette size sensor PCB.
  • Page 65 CHAPTER 5 OPERATION TROUBLESHOOTING 26. 8 indicator does not go ON Cause/Problem Procedure Check Result Action area Does the copying operation stop when a Continue from step 3. jam occurs? Jam sensor Are the following sensors functioning nor- Replace the jam sensor. DC controller mally? Replace the DC control-...
  • Page 66 CHAPTER 5 OPERATION TROUBLESHOOTING indicator does not go OFF when there is toner during black copying Cause/Problem Procedure Check Result Action area DC controller Does the indicator come back ON when Replace the DC control- the power switch is set OFF, and then ON ler PCB.
  • Page 67 CHAPTER 5 OPERATION TROUBLESHOOTING indicator does not go OFF Cause/Problem Procedure Check Result Action area Control Card Is anything displayed on the control card Disconnect the shorting. unit power display? Either 24VDC or GND supply is not connected to the control card unit.

  • Page 69: Chapter 6 Troubleshooting Feeding Problems

    CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS PAPER JAMS The main areas in this copier where jams could occur are as follows: [1] Paper pick-up area [2] Separation and feeder area [3] Fixing and delivery assembly area [4] Drum cleaner area Troubleshooting of paper jamming is described here for each of the above areas.
  • Page 70 CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS Jamming in the paper pick-up area Cause/Problem Procedure Check Result Action area Cassette Is the cassette pushed fully into the copier? Push the cassette in fully. Does the problem disappear when a differ- 1.Check the paper hold- ent casssette is used? down tabs.
  • Page 71 CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS Jamming in the separation and feeder assembly area Cause/Problem Procedure Check Result Action area Does the leading edge of the copy paper Continue with step 5. pass through the registration rollers? Registration Does the registration roller clutch (CL1) Check the registration roller clutch operate correctly?
  • Page 72 CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS Jamming in the fixing and paper delivery assembly area Cause/Problem Procedure Check Result Action area Delivery assem- Are the separation claws worn or de- 1.Replace the separation bly separation formed? claws. claws 2.If the separation claws are dirty, clean them with MEK.
  • Page 73 3.Measure the strength of the paper-lifting springs. If it is weak, replace them. Copy paper Is paper recommended by Canon being Suggest that the user use used? paper recommended by Canon. Hold-down Check if the hold-down tabs tabs are deformed.
  • Page 74 CHAPTER 6 TROUBLESHOOTING FEEDING PROBLEMS Wrinkles Cause/Problem Procedure Check Result Action area Pick-up assembly Switch the power OFF while the copy 1.Check the pick-up as- paper is passing along the feeder. Are sembly. there any wrinkles in the copy paper at 2.Check the registration this point? Is the paper skewed? rollers.

  • Page 75: Chapter 7 Service Mode

    CHAPTER 7 SERVICE MODE CHAPTER 7 SERVICE MODE Outline The NP6317's service mode allows the following: • checking the operation of some switches and LEDs • changing data in EEPROM • operating some functions Using the Service Mode 1) Detach the VR cover from the rear of the left cover.
  • Page 76 CHAPTER 7 SERVICE MODE Guide to Service Mode SERVICE PROGRAMS Display Function Range Default Note Note Auto exposure sensor monitor- ing. Auto exposure adjusting. 0 to 50 0.10 Volt/step Register A-side adjusting. 0 to 63 0.25 mm/step Blank A-side adjusting. 0 to 63 0.25 mm/step Curve adjusting.
  • Page 77 CHAPTER 7 SERVICE MODE Size code No cassette A4 R A5 R Universal Table 7-2 Size Code B5 R LETTER LETTER R LEGAL STMT R Table 7-3...

  • Page 79: Chapter 8 Self Diagnosis

    CHAPTER 8 SELF DIAGNOSIS CHAPTER 8 SELF DIAGNOSIS The DC controller PCB has a microprocessor that diagnoses the functions of the copier (par- ticularly the sensors) at appropriate intervals. If this microprocessor detects an abnormality, it will display the type of the abnormality on the indicator on the control panel. The table below shows the various fault codes, their meaning, and the corresponding detection timing.
  • Page 80 CHAPTER 8 SELF DAIGNOSIS Code displayed Main cause Fault criteria Scanner home position sensor (Q5), 1. If the scanner is not at the home po- E202 scanner motor (M2), or DC controller sition (SCHP=0) when the COPY START key is pressed. If the scanner does not return to the home position (SCHP remains 0) within 15 sec (A4 size) after it starts...
  • Page 81 CHAPTER 8 SELF DIAGNOSIS Note: After self diagnosis has been executed, the copier may be reset by switching if OFF and then ON unless 'E000', 'E001', 'E002', 'E003' or 'E004' is indicated on the display. This consideration is made to prevent the user from resetting the copier when the fixing assem- bly has a serious fault (open thermistor or others) that can damage the assembly.

  • Page 83: General Timing Chart

    APPENDIX A. GENERAL TIMING CHART (A4, AE, 2 copies) Power switch COPY START key Green indicator lights to 110˚C 190˚C indicate copying can start Sequence WMUP WMUPR STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanner cooling fan (FM1) Pre-exposure lamp Fixing roller heater (LA1) Primary/Transfer corona assembly...
  • Page 84 <MULTI FEED> (A4, 2 copies, multifeed) COPY START key Sequence INTR SCFW SCRV SCFW SCRV LSTR Main motor (M1) Scanner cooling fan Pre-exposure lamp Fixing roller heater (LA1) Primary/Transfer corona assembly Developing DC component Developing AC component Scanning lamp (LA2) Scanner home position sensor (Q5) signal Grid bias ON/OFF...

  • Page 85: Appendix

    APPENDIX B. LIST OF SIGNALS/ABBREVIATIONS The following is a list of signals and abbreviations used in this document and the circuit dia- grams: Note: The abbreviations in parentheses are electrical signals but are analog, which cannot be ex- pressed in terms of '1' and '0'. Others are digital signals, which can be expressed as being either '1' or '0'.

  • Page 87: General Curcuit Diagram

    C. GENERAL CURCUIT DIAGRAM Noise filter INLET J103 J102 N-white N-white 230V L-black L-black J104 J101 J100 J105 4 3 2 Fixing roller heater L-black L-black JP107 JP100 N-white N-white JP103 N-white N-white Power supply assembly L-black L-black L-black Thermoswitch 1 SORTER Main switch Paper passing varistor...

  • Page 89: Solvents And Oils List

    APPENDIX D. SOLVENTS AND OILS LIST Name Uses Composition Remarks Alcohol Cleaning; Fluorine-family • Do not bring near fire. e.g., glass, hydrogen carbon, • IPA (isopropyl alcohol) plastic, rubber alcohol, surface (external covers). activating agent Lubricant Driving parts, Silicone oil •...

  • Page 90: Specifications

    APPENDIX E. SPECIFICATIONS Type Body Desktop Copyboard Fixed Light sourse Halogen lamp Lens Single lens + mirror movement Photosensitive medium System Reproduction Indirect electrostatic method Charging Corona Exposure Slit (moving light source) Copy density adjustment Auto or manual Development Pick-up Automatic Exclusive cassette Manual...
  • Page 91 APPENDIX Two-sided Multifeed tray Plain paper (64 to 128 g/m ), Colored paper copying Overlay Multifeed tray Plain paper (64 to 128 g/m ), Colored paper copying Claw Provided Cassette Standard 60 mm deep (about 500 sheets of 80 g/m paper) Universal Copy tray...
  • Page 93 Office Imaging Products Technical Support Division Office Imaging Products Quality Assurance Center CANON INC. Printed in Japan REVISION 0 (APR. 1999) (18756) 5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302-8501 Japan COPYRIGHT © 1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 94 This pubication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIME AU JAPON) 0499AB1.01-1...

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