Canon NP6621 Service Handbook
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Canon NP6621 Service Handbook

Canon NP6621 Service Handbook

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SERVICE
HANDBOOK
REVISION 0
FY8-23AT-000
FEB. 1998
COPYRIGHT © 1998 CANON INC.
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

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  • Page 1 SERVICE HANDBOOK REVISION 0 FY8-23AT-000 FEB. 1998 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 IMPORTANT THE INFORMATION CONTAINED HEREIN IS PUBLISHED BY CANON, INC., JAPAN, AND IS FOR REFERENCE USE ONLY. SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN 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 DEPARTMENT OF THE SALES COMPANY.
  • Page 3 Guide To Tables In this Handbook, work procedures are given in the form of tables instead of flow charts used generally. Familiarize yourself by studying the example below. EX. AC power is absent. Yes/No Remedy Cause Step Checks Connect the power plug. Power plug Is the power plug connected to the power outlet?

  • Page 5: Table Of Contents

    CONTENTS CHAPTER 1 MAINTENANCE AND INSPECTION SERVICING CHART ......... 1-1 B. Cassette Feeding Module-B2/ II. PERIODICALLY REPLACED PARTS ..1-2 Cassette Feeding Module-A2/ A. Periodically Replaced Parts ....1-2 Cassette Feeding Unit-K1 ....1-4 III. DURABLES ..........1-3 C. Paper Deck Pedestal-K1 ..... 1-4 A.
  • Page 6 CHAPTER 3 IMAGE FAULTS A. Initial Checks ..........3-1 10. The copy has white spots (vertical). .. 3-11 B. Samples of Image Faults ......3-4 11. The copy has white lines (vertical)..3-11 C. Troubleshooting Image Faults ...... 3-5 12.
  • Page 7 B. Feeding Faults..........5-5 3. Double feeding (paper deck)....5-8 1. Double Feeding ........5-5 4. Wrinkling (paper deck)......5-8 2. Wrinkles ..........5-5 5. The ‘ADD PAPER’ message fails to C. Paper Deck ..........5-6 turn off (paper deck)......5-9 1.

  • Page 9: Chapter 1 Maintenance And Inspection

    MAINTENANCE AND INSPECTION CHAPTER 1 MAINTENANCE AND INSPECTION I. SERVICING CHART Caution: Do not use solvents or oils other than those specified. : clean : replace : lubricate : adjust : inspect or clean every every every every Unit Parts Remarks 20,000 60,000...

  • Page 10: Periodically Replaced Parts

    MAINTENANCE AND INSPECTION II. PERIODICALLY REPLACED PARTS Some parts of the copier must be replaced on a periodical basis to ensure a specific level of performance; replace them as indicated regardless of the presence of visible damage. Plan the replacement to coincide with a scheduled visit. A.

  • Page 11: Durables

    MAINTENANCE AND INSPECTION III. DURABLES The parts shown in the table may require replacement because of deterioration or damage over the period of warranty; replace them when they fail using the table as a guide. A. Copier as of FEB. 1998 Parts No.
  • Page 12 MAINTENANCE AND INSPECTION B. Cassette Feeding Module-B2/Cassette Feeding Module-A2/ Cassette Feeding Unit-K1 as of FEB. 1998 Parts name Q’ty Life (copies) Remarks Parts No. 100,000 Actual usage Pick-up roller FB2-2251-000 1 through 3 100,000 Actual usage Pick-up separation pad FG5-3614-000 1 through 3 Note: The above values are estimates only and subject to change based on future data.
  • Page 13 MAINTENANCE AND INSPECTION IV. MAINTENANCE AND INSPECTION A. Image Adjustment Procedure Pre-Checks Optimum Density Adjustment Is the density of gray scale End the Clean the static eliminator. No. 8 optimum? adjust- ment. Is the density of gray scale Is the density correction vol- too high (dark)? ume (VR850) on the service switch PCB centered on the...
  • Page 14 MAINTENANCE AND INSPECTION B. Points to Note for Servicing Work Copyboard, Scanner Optical path Item Tool/Solvent Work/Remarks Item Tool/Solvent Work/Remarks Cleaning Copyboard glass Alcohol Cleaning Lens Blower brush Scanning lamp Lint-free paper Dry wiping Dust-proofing Blower brush Cleaning glass If excessive, dry wiping Reflecting plate Blower brush with lint-free paper...

  • Page 15: Chapter 2 Standards And Adjustments

    STANDARDS AND ADJUSTMENTS CHAPTER 2 STANDARDS AND ADJUSTMENTS A. Mechanical Adjusting the Leading Edge Non- Image Width ([3], No. 306; blank shutter ON timing) Adjusting the Image Leading Edge Margin ([3], No. 305; Select service mode ([3] No. 306; leading edge registration ON timing) non-image width), and make adjustments so that the leading edge non-image width is as indicated in...

  • Page 16: Adjusting The Image Trailing Edge Non-Image Width ([3], No.309; Blanking Shutter Timing)

    STANDARDS AND ADJUSTMENTS 6) Press the Clear key to return to item selection. • For each ‘1’, the image position changes by The following is the relationship between the about 0.27 mm. settings and the image positions: • For a ‘+’, the trailing edge non-image width •...

  • Page 17: Adjusting The Left/Right Margin (No.311 Left/Right Margin Adjustment)

    STANDARDS AND ADJUSTMENTS b. Pick-Up from the Multifeeder Loosen the screw , and move the position of the tray so that the measurement is 0 ±1.5 mm. Shutter Adjust the distance between the two shutters in the blanking assembly. Figure 2-206 b.

  • Page 18: Routing The Scanner Drive Cable

    STANDARDS AND ADJUSTMENTS Routing the Scanner Drive Cable Route the cable as indicated by the numbers through , and perform “Adjusting the Cable tension” and “Adjusting the Mirror Position” as described. Set screws Loosen the set screws to enable free rotation. Put the steel ball Pulley clip Screw...

  • Page 19: Adjusting The Mirror Position (Optical Length Between No.1Mirror And No.2/3 Mirror)

    STANDARDS AND ADJUSTMENTS 5) Install the metal fixing of the scanner cable to Adjusting the Mirror Position (op- the No. 1 mirror mount using two screws tical length between No. 1 mirror (both front and rear). and No. 2/3 mirror) 1) Keep the mirror positioning tool at hand.

  • Page 20: Orienting The Multifeeder Pick-Up Roller

    STANDARDS AND ADJUSTMENTS Caution: Orienting the Multifeeder Pick- If the adjusting hole is not furnished with a black Up Roller dot for reference, make adjustments as When installing the multifeeder pick-up roller instructed while making sure that the paper make sure that the side with a cross on its collar guide plate cam of the multifeeder assembly is is toward the rear.

  • Page 21: Positioning The Blanking Shutter Solenoid

    STANDARDS AND ADJUSTMENTS Positioning the Blanking Shutter Solenoid Adjust the position of the solenoid so that bottom A is 9.5 ±0.5 mm for both sides of the shutter when the solenoid is moved to the ON direction. Avoid forcing the shutter down when taking measurements. After adjustment, make sure that the solenoid moves smoothly.

  • Page 22: Adjusting The Lower Fixing Roller

    STANDARDS AND ADJUSTMENTS Routing the Blanking Shutter Cable Attach the spring to the outside of the sides shutter. Slide shutter (rear) Wind 3.5 times. Slide shutter (front) Figure 2-222 Adjusting the Lower Fixing Roller Nip If fixing faults occur, make the following adjustments: The nip is correct if it is as indicated in Figure 2-223;...

  • Page 23: Points To Note After Replacing

    STANDARDS AND ADJUSTMENTS a. Measuring the Nip Mounting the Oil Application Measure the nip when the machine is turned on Solenoid for the first time in the morning. 1) Open the copyboard cover, and make an A4 Screw the oil application solenoid in place where (SM0-1) solid black copy.
  • Page 24 STANDARDS AND ADJUSTMENTS Routing the Drive Belt Be sure to attach the drive belt on the pulley and the tensioner as indicated in Figures 2-225 and 2-226. Drive belt Pulley Tensioner Figure 2-225 Vertical path roller gear Main motor Tensioner Vertical path roller clutch (CL7) Figure 2-226...

  • Page 25: Positioning The Primary Charging Roller Cleaning Solenoid

    STANDARDS AND ADJUSTMENTS Positioning the Primary Charging Roller Cleaning Solenoid Loosen the two screws used to fix the solenoid in place, and move the solenoid in the direction of the arrow B so that the l in Figure 2-227 is 5.5 ±0.2 mm when the joint is forced against the section of the solenoid support plate...

  • Page 26: After Replacing The Drum Unit

    STANDARDS AND ADJUSTMENTS 4) Install the heater holder to the transfer guide After Replacing the Drum Unit with two screws Whenever you have replaced the drum unit, record the date and the counter reading on the label that comes with the drum unit; attach the label to the front cover of the new drum unit, and perform the Image Adjustment Basic Procedure.

  • Page 27: Assembling The Mirror Positioning Tool

    STANDARDS AND ADJUSTMENTS Assembling the Mirror Position- Positioning the Paper Deflecting Plate Solenoid (SL8) ing Tool 1) Remove the screw from position B indicated in Loosen the two screws , push the solenoid Figure 2-233. plunger to the arrow until the pin reach to the bottom of slot, and fix the screw.

  • Page 28: Adjusting The Deck Registration

    STANDARDS AND ADJUSTMENTS 3) Fix each guide plate in position referring to the 8) Install the switch cover. size indexes on the base plate, front side plate, 9) Attach the size seal to the front cover of the and guide plates. deck.

  • Page 29: Electrical

    STANDARDS AND ADJUSTMENTS B. Electrical Adjusting the Scanning Lamp Intensity Adjustment after Replacing Select service mode No. 407. PCBs 1) Place the Test Sheet NA3 on the copyboard, and close the copyboard cover. You must perform the following adjustments 2) Turn OFF AE, and make copies in continuous whenever you have replaced the following PCBs: mode at copy density 5 and VR850 (DC bias) is at center.
  • Page 30 STANDARDS AND ADJUSTMENTS If you have replaced the AE sensor, scanning 9) Press the Start key. lamp, or DC controller or if you performed scanning • The display indicates ‘0’ through ‘255’. lamp intensity adjustment (VR301), you must per- 10) Adjust VR860/851 on the Service switch PCB form so that the display indicates ‘100’...
  • Page 31 STANDARDS AND ADJUSTMENTS • default: settings: –26 to +26 • If the value is negative, ‘%’ is turned ON. To enter a negative value, press the ‘%’ key before entering the value. • The indication stops flashing and remains ON when the value has been stored.
  • Page 32 STANDARDS AND ADJUSTMENTS Item Function Description Remarks No. 301 Automatic lamp The lamp intensity is intensity adjustment automatically adjusted so for AE scans that the copies of the Lighter Test Chart will be made at density 5. Copy density 5 Darker Test Chart Density of...

  • Page 33: Multifeeder Paper Width Sensor Adjustment

    STANDARDS AND ADJUSTMENTS Multifeeder Paper Width Sensor Numeric Display Remarks keypad Adjustment In this adjustment, you will be storing the char- acteristics of the multifeeder paper width sensor 11 × 17 using service mode No. 501. Perform the adjustment if you have replaced the sensor or if the machine wrongly identifies paper sizes.

  • Page 34: Setting The Paper Size For The Universal Cassette

    STANDARDS AND ADJUSTMENTS Numeric Setting the Paper Size for the Size (mm) Paper keypad Universal Cassette 355.0 × 216.0 Bolivian You will be using service mode to set the paper OFFICIO size that is effective when the paper size lever of the cassette is positioned for the universal cassette.

  • Page 35: Initializing The Back-Up Ram

    STANDARDS AND ADJUSTMENTS Initializing the Back-Up RAM Checking the Photointerrupters 1) Open the front door, and insert the door switch The machine’s photointerrupters may be actuator into the door switch. checked using a conventional meter or in service 2) Press the service mode switch (SW850) with a mode.
  • Page 36 STANDARDS AND ADJUSTMENTS a. Copier Notation Name Scanner home position sensor Lens home position sensor (LHP) (SCHP) (+) probe of meter J315-B4 J310-A2 Service mode — No. 222 1-c Move the scanner by hand while in Move the lens mount by hand while standby.
  • Page 37 STANDARDS AND ADJUSTMENTS Notation Name Multifeeder paper sensor (MFPD*) Registration sensor (RPD) (+) probe of meter J316-10 J316-13 Service mode No. 221 1-a No. 222 1-a Set paper on the multifeeder tray Open the right door while in while in standby. standby, and insert copy paper between the paper guide plates.
  • Page 38 STANDARDS AND ADJUSTMENTS PS11 Notation PS10 Copyboard cover open/closed Name Right door open/closed sensor sensor (CVOP) (RDOP*) J310-A11 (+) probe of meter J309-12 Service mode No. 220 1-f — Open the right door while in Open and close the copyboard standby.
  • Page 39 STANDARDS AND ADJUSTMENTS Notation PS14 PS15 Name Duplexing unit outlet paper sensor Duplexing unit paper outlet sensor (DUEX) (DUIN) (+) probe of meter J325-2 J320-2 Service mode — — Open the duplexing unit, and push Open the duplexing unit, and press the flag of the sensor by a finger.
  • Page 40 STANDARDS AND ADJUSTMENTS Notation Q651 Q652 Name Cassette 1 size sensor 1 (CSZ-1) Cassette 1 size sensor 2 (CSZ-2) (+) probe of meter J318-2 J318-3 Service mode No. 216 1-a No. 216 1-b Slide out the cassette while in Slide out the cassette while in standby, and operate the detection standby, and operate the detection lever by a finger.
  • Page 41 STANDARDS AND ADJUSTMENTS Notation Q651-2 Q652-2 Name Cassette 2 size sensor 1 (CSZ-1) Cassette 2 size sensor 2 (CSZ-2) (+) probe of meter J318-8 J318-9 Service mode No. 217 1-a No. 217 1-b Slide out the cassette while in Slide out the cassette while in standby, and operate the detection standby, and operate the detection lever with a finger.
  • Page 42 STANDARDS AND ADJUSTMENTS b. Cassette Unit Notation PS1cu PS2cu Name Cassette 3 vertical path sensor Cassette 3 paper sensor (C3PD*) (C3VPD) (+) probe of meter J308-A2 J308-A4 Service mode No. 214 1-b No. 214 2-a Slide out the cassette 3 while in Slide out the cassette 3 while in standby, and insert copy paper standby.
  • Page 43 STANDARDS AND ADJUSTMENTS Notation Q653-3 Q654-3 Name Cassette 3 size sensor 3 (C3SZ3) Cassette 3 size sensor 4 (C3SZ4) (+) probe of meter J308-B1 J308-B2 Service mode No. 218 1-c No. 218 1-d Slide out the cassette while in Slide out the cassette while in standby, and operate the detection standby, and operate the detection lever with a finger.
  • Page 44 STANDARDS AND ADJUSTMENTS Notation Q651-4 Q652-4 Name Cassette 4 size sensor 1 (C4SZ1) Cassette 4 size sensor 2 (C4SZ2) (+) probe of meter J308-A10 J308-A11 Service mode No. 308 1-a No. 219 1-b Slide out the cassette while in Slide out the cassette while in standby, and operate the detection standby, and operate the detection lever with a finger.
  • Page 45 STANDARDS AND ADJUSTMENTS Notation PS5cu Name Cassette right door open/closed sensor (CRDOP*) (+) probe of meter J308-A6 Service mode No. 215 1-c Open the right door while in standby. Checks; normal if as indicated. When the right When the right door is open door is not open Display...
  • Page 46 STANDARDS AND ADJUSTMENTS Notation Q653-5 Q654-5 Name Cassette 5 size sensor 3 (C5SZ3) Cassette 5 size sensor (C5SZ4) (+) probe of meter J308-B1 J308-B2 Service mode No. 219 1-c No. 219 1-d Slide out the cassette while in Slide out the cassette while in standby, and operate the detection standby, and operate the detection lever with a finger.

  • Page 47: Chapter 3 Image Faults

    If scratches are found, replace the part. 4. Paper a. Is the paper of a type recommended by Canon? b. Is the paper moist? Try paper fresh out of package. 5. Others...
  • Page 48 IMAGE FAULTS 3–2...
  • Page 49 IMAGE FAULTS NOT USED 3–3...
  • Page 50 IMAGE FAULTS B. Image Fault Samples not available 3–4...

  • Page 51: Troubleshooting Image Faults

    IMAGE FAULTS C. Troubleshooting Image Faults The copy is too light (half-tone areas only) Cause Step Checks Yes/No Remedy Perform the Basic Image Adjustment End. Procedure. Is the problem corrected? AE adjust- Is the density too low on copies made Perform AE adjustment.

  • Page 52: The Copy Is Too Light (Including Solid Black)

    2. Advise the user that the use of paper not recommended by Canon may not bring about the best results. Check to find out if the lower Position the feeding assembly, Lower transfer...

  • Page 53: The Copy Has Uneven Density (Darker At Front)

    IMAGE FAULTS The copy has uneven density (darker at front). The copy has uneven density (lighter at front). Cause Step Checks Yes/No Remedy Scanner Clean the scanning lamp, reflecting End. plate, side reflecting plate, mirror, lens, and dust-proofing glass. Is the problem corrected? Primary Execute service mode 402 (primary...

  • Page 54: The Copy Is Foggy (Overall)

    IMAGE FAULTS The copy is foggy (overall). Cause Step Checks Yes/No Remedy Perform the Basic Image Adjustment End. Procedure. Is the problem corrected? Scanner Clean the scanning lamp, reflecting End. plate, side reflecting plate, mirror, lens, and dust-proofing glass. Is the problem corrected? Pre-expo- Does the pre-exposure lamp remain...

  • Page 55: The Copy Has Vertical Fogging

    IMAGE FAULTS The copy has vertical fogging. The copy has black lines (vertical, fuzzy, thick). Cause Step Checks Yes/No Remedy Perform the Basic Image Adjustment End. Procedure. Is the problem corrected? Primary Execute service mode 402 (primary End. charging charging roller cleaning). Is the roller problem corrected? Scanner...

  • Page 56: The Copy Has Black Lines (Vertical, Fine)

    IMAGE FAULTS The copy has black lines (vertical, fine). Cause Step Checks Yes/No Remedy Press the Copy Start key, and turn Go to step 3. OFF the power switch while the copy paper is in the feeding assembly. At this time, does the copy image before the fixing assembly have black lines? Transfer Is the transfer guide soiled? (Check in...
  • Page 57 IMAGE FAULTS The copy has white spots (vertical). The copy has white lines (vertical). Cause Step Checks Yes/No Remedy Fixing Press the Copy Start key with the 1. Clean the inlet guide assembly copyboard open, and turn OFF the assembly (upper, lower) power switch while the copy is moving of the fixing assembly.
  • Page 58 IMAGE FAULTS The copy has white spots (horizontal). Cause Step Checks Yes/No Remedy Toner Remove the developing assembly, The toner may be inad- and shake it several times. Is the equate; advise the user. problem corrected? Photosensi- Is the problem noted at intervals of 1.
  • Page 59 IMAGE FAULTS The back of the copy is soiled. Cause Step Checks Yes/No Remedy Turn OFF the power switch while copy Go to step 7. paper is moving through the feeding assembly. Is the back of the copy soiled at this time? Transfer Execute service mode No.
  • Page 60 IMAGE FAULTS The copy has a fixing fault. Cause Step Checks Yes/No Remedy Upper and Is faulty fixing occurring in the feed Check the scratches on the Lower direction of the paper? upper and lower fixing rollers. developing rollers Fixing roller Does the fixing roller heater (H1) go Refer to the sub-section heater (H1)
  • Page 61 Is the original set correctly? Set the original correctly. Copy paper Is the copy paper of a type recom- Try recommended paper; if mended by Canon? the results are good, advise the user to use recom- mended paper. Pick-up roller,...
  • Page 62 IMAGE FAULTS The copy has blurred images. Cause Step Checks Yes/No Remedy Scanner Does the cable wound around the 1. Re-route the cable. drive cable cable pulley overlap while the scanner 2. If the cable is twisted or is moving? frayed, replace it.
  • Page 63 IMAGE FAULTS The copy has poor sharpness. Cause Step Checks Yes/No Remedy Original Is the original off the copyboard glass? 1. Check the copyboard cover for warping. 2. Advise the user how to place an original on the copyboard correctly. Lens drive •...
  • Page 64 IMAGE FAULTS The copy is blank. Cause Step Checks Yes/No Remedy Drum Is the drum cartridge installed? Install the drum cartridge. cartridge Drum drive Is the photosensitive drum rotating 1. Check if the photosensi- assembly during copying operation? tive drum is rotating smoothly.

  • Page 65: Chapter 4 Troubleshooting Malfunctions

    TROUBLESHOOTING MALFUNCTIONS CHAPTER 4 TROUBLESHOOTING MALFUNC- TIONS E000 Cause Step Checks Yes/No Remedy J47 (relay Disconnect the connector J4 of the Re-connect it. connector to fixing heater, and press the power thermistor) switch while holding down the service mode switch. (This will reset E000; about 2 sec later, the power switch will turn OFF automatically.) Is the connection (4-pin connector on...

  • Page 66: E001

    TROUBLESHOOTING MALFUNCTIONS E001 Cause Step Checks Yes/No Remedy Thermistor Disconnect the connector (J4) of the Replace the upper fixing fixing heater, and press the power assembly. switch while holding down the service mode switch. (This will reset E001; about 2 sec later, the power switch will turn OFF automatically.) Let the fixing assembly cool, and disconnect J47.

  • Page 67: E004

    TROUBLESHOOTING MALFUNCTIONS E004 Cause Step Checks Yes/No Remedy Fixing Replace the fixing heater driver PCB. End. heater driver Is the problem corrected? DC control- Replace the DC controller ler PCB PCB. 4–3...

  • Page 68: E010

    TROUBLESHOOTING MALFUNCTIONS E010 Cause Step Checks Yes/No Remedy Does the main motor rotate until Go to step 3. ‘E010’ is indicated? Main motor Set the meter to the 12VDC range. Replace the main motor unit unit (M1; the Does the voltage between J312-A8 (+; (M1).

  • Page 69: E064

    TROUBLESHOOTING MALFUNCTIONS E064 Cause Step Checks Yes/No Remedy Wiring Turn OFF/ON the power switch, and Check the harness between (biting) set the copy count to ‘1’. Is ‘E064’ the DC controller PCB and indicated when copying operation the composite power supply ends? Composite Set the copy count to ‘1’, and press...

  • Page 70: E210

    TROUBLESHOOTING MALFUNCTIONS E210 Cause Step Checks Yes/No Remedy Does the lens move when the power See “The lens fails to move.” switch is turned ON? Lens home Check the wiring from the Is the lens home position sensor (PS2) position connector J310 on the DC normal? (See the descriptions on how sensor...

  • Page 71: E260

    TROUBLESHOOTING MALFUNCTIONS E260 Cause Step Checks Yes/No Remedy Connector Is there a diaplaced connector or open Connect the connector or (displaced), circuit between the power supply replace the harness. Harness cooling fan (FM3) in the composite (open power supply unit and the DC circuit) controller PCB? Power...

  • Page 72: E802

    TROUBLESHOOTING MALFUNCTIONS E710, E711, E712, E717 Cause Step Checks Yes/No Remedy Turn ON/OFF the power switch. Is the End. problem corrected? Replace the DC controller controller PCB. E802 Cause Step Checks Yes/No Remedy Composite Replace the composite power supply End. power PCB.

  • Page 73: Ac Power Is Absent

    TROUBLESHOOTING MALFUNCTIONS AC power is absent. Checks Cause Step Yes/No Remedy When the power switch is turned ON, E indication Disconnect the connector J4 is the E code indicated and is the (E000, of the fixing heater, and turn power switch turned OFF within about E001, E002, ON the power switch while 2 sec?
  • Page 74 TROUBLESHOOTING MALFUNCTIONS DC power is absent. Cause Step Checks Yes/No Remedy AC power Is AC power supply present between See “AC power is absent.” supply the following terminals? • Composite Power Supply PCB J2-1 and J2-3 (J2 is the 3-pin connector found on the power cord mount.) Wiring, DC...
  • Page 75 TROUBLESHOOTING MALFUNCTIONS The photosensitive drum fails to rotate. Cause Step Checks Yes/No Remedy Is ‘E010’ indicated? See “E010.” Drum Re-install the drum cartridge. Is the End. cartridge problem corrected? Belt Is the drive belt correctly attached? Re-attach the belt. Main drive Remove the main drive assembly assembly, and correct or...
  • Page 76 TROUBLESHOOTING MALFUNCTIONS Pick-up operation fails (multifeeder). Cause Step Checks Yes/No Remedy Multifeeder Select the multifeeder. Does the Check the wiring; if normal, pick-up multifeeder pick-up roller rotate when replace the CL3. clutch (CL3) the Copy Start key is pressed? Paper guide Press the Copy Start key;...
  • Page 77 TROUBLESHOOTING MALFUNCTIONS The registration roller fails to operate. Cause Step Checks Yes/No Remedy Registration Press the Copy Start key. Does the Check the drive assembly of roller registration roller rotate for about 1 sec the registration roller. immediately after the scanner starts to move forward? DC control- Set the meter to the 30 VDC range.
  • Page 78 TROUBLESHOOTING MALFUNCTIONS The lens fails to move. Cause Step Checks Yes/No Remedy Change Turn OFF the power switch, and Check the wiring from the solenoid remove the rear cover. Does the DC controller to the SL1: if (SL1) change solenoid (SL1) turn ON when normal, replace SL1.
  • Page 79 TROUBLESHOOTING MALFUNCTIONS The pre-exposure lamp fails to turn ON. Cause Step Checks Yes/No Remedy DC control- Remove the drum cartridge, and Replace the pre-exposure ler PCB execute service mode No. 411. Does lamp. the pre-exposure lamp turn ON normally? Pre-expo- Replace the pre-exposure lamp.
  • Page 80 TROUBLESHOOTING MALFUNCTIONS 4–16...

  • Page 81: Chapter 5 Troubleshooting Feeding Faults

    TROUBLESHOOTING FEEDING FAULTS CHAPTER 5 TROUBLESHOOTING FEEDING FAULTS A. Copy Paper Jams The tables showing ways to remove jams and remedies are organized according to these areas. In the machine, areas where jams tend to occur The machine provides service mode ([1] No. can be grouped into the following: 101) by which you can find out the location and the Pick-up assembly...

  • Page 82: Pick-Up Assembly

    Is the copy paper curled or wavy? Replace the copy paper. Advise the user on the correct method of storing copy paper. Try Canon-recommended paper. Is Advise the user to use the problem corrected? recommended paper. DC controller Does the pick-up roller of the selected See “Pick-up operation fails.”...

  • Page 83: Separation/Feeding Assembly

    TROUBLESHOOTING FEEDING FAULTS Separation/Feeding Assembly Cause Yes/No Remedy Step Checks Transfer charging Check the charging Is the transfer charging assembly assembly. installed properly? Remove the burrs. Are there burrs on the paper guide of the transfer charging assembly? Copy paper Advise the user to use Try recommended paper.

  • Page 84: Duplexing Unit

    TROUBLESHOOTING FEEDING FAULTS Duplexing Unit (during stacking operation) Cause Step Yes/No Remedy Checks Duplexing unit inlet Replace the sensor. Is the duplexing inlet sensor sensor (PS15) (PS15) normal? Set-back motor Replace the motor. Does the set-back roller rotate (M5) clockwise and counterclockwise at specific timing? Duplexing Unit (during re-pick up operation) Remedy...

  • Page 85: Feeding Faults

    Advise the user to use Is the paper of a type recom- recommended paper. mended by Canon? Paper guide Clean it with solvent. Is the paper guide soiled with toner or foreign matter? Lower roller Adjust the pressure.

  • Page 86: Paper Deck

    TROUBLESHOOTING FEEDING FAULTS C. Paper Deck Pick-up fails (from deck). Cause Step Checks Yes/No Remedy Does the ‘ADD PAPER’ message See “The ‘ADD PAPER’ remain on? message fails to turn off.” Right door Is the right door firmly closed? Close the door firmly. Lifter Does the lifter lower when the deck is See “The deck lifter fails to...

  • Page 87: Paper Jams When Pick-Up Is From The Paper Deck

    Try paper recommended by Advise the user to use recom- Canon. Is the problem cor- mended paper. rected? Does double feeding or pick-up Clean the separation roller and Deck separation...
  • Page 88 Try paper of a type recommended by Advise the user to use Canon. Is the problem corrected? recommended paper. Copier Does the paper wrinkle when a copy Check the copier’s paper is made from the copier’s lower...
  • Page 89 TROUBLESHOOTING FEEDING FAULTS The ‘ADD PAPER’ message fails to turn off (paper deck). Cause Step Checks Yes/No Remedy Copier Is the message on the deck? Check the copier. Does the deck’s lifter rise? See “The lifter fails to rise.” Deck paper Is the deck paper sensor (PS1) Check the sensor lever and sensor...
  • Page 90 TROUBLESHOOTING FEEDING FAULTS The lifter fails to rise (paper deck). Cause Step Checks Yes/No Remedy Deck Is the deck properly set? Set the deck properly. Lifter cable Attach the cable properly. Is the lifter cable properly attached? Spring, Push up the pick-up roller release Detach the pick-up assem- Lever lever by a finger.

  • Page 91: Chapter 6 Arrangement And Functions Of The Electrical Parts

    ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 6–1...

  • Page 92: Sensors

    ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS A. Sensors PS23 PS21 PS10 PS16 PS12 PS11 PS13 PS14 PS19 PS15 Figure 6-600 6–2...
  • Page 93 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Symbol Name Notation Description Photointerrupter Scanner home position detection Lens home position detection Blank shutter home position detection Paper in cassette 1 detection Paper in multifeeder detection Registration roller detection Paper for separation detection Paper for delivery detection PS10 Right door open/closed detection...

  • Page 94: Clutches, Solenoids, And Switches

    ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS B. Clutches, Solenoids, and Switches CNT1 CNT2 Figure 6-601 6–4...
  • Page 95 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Symbol Name Notation Description Clutch Registration clutch Cassette 1 pick-up clutch Multifeeder pick-up clutch Duplexing unit registration clutch Cassette 2 pick-up clutch Slip roller clutch Solenoid Change solenoid Multifeeder holding plate solenoid Blanking shutter solenoid Primary charging roller releasing solenoid Transfer charging roller releasing solenoid Oil application solenoid...

  • Page 96: Motors, Heaters, And Lamps

    ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS C. Motors, Heaters, and Lamps Figure 6-602 6–6...
  • Page 97 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Symbol Name Notation Description Motor Main motor Scanner motor Lens motor Fixing belt motor Duplexing motor Fan motor Exhaust fan Scanner cooling fan Power supply cooling fan Feeding fan Heater Fixing heater Drum heater Cassette heater Lens heater 1 Lens heater 2...

  • Page 98: Pcbs

    ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS D. PCBs Figure 6-603 6–8...
  • Page 99 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Ref. Name Function Noise filter Noise prevention Composite power supply DC power supply, high voltage generation DC controller Sequence control AE sensor Original density measurement Light adjustment sensor Lamp intensity detection Control panel Control panel key, LED High-voltage connector Charging, transfer, and static elimination power relay...
  • Page 100 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS E. Cassette Feeding Module-A2 CL1cu PS1cu PS3cu PS2cu M1cu CL2cu PS5cu PS4cu Q564-2 Q563-2 Q562-2 Q561-2 Q564-3 Q563-3 Q562-3 Q561-3 Figure 6-604 6–10...
  • Page 101 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Symbol Name Notation Description Photointerrupter PS1cu Cassette 3 vertical path detection PS2cu Cassette 3 paper detection PS3cu Cassette 4 vertical path detection PS4cu Cassette 4 paper detection PS5cu Cassette right door open/closed detection Q561-2 Cassette 3 paper size detection 1 Q562-2...
  • Page 102 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS F. Cassette Feeding Unit-K1 Figure 6-605 6–12...
  • Page 103 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Symbol Name Notation Description Photointerrupters PS1cu Cassette 3 pick-up detection PS2cu Cassette 3 paper detection PS3cu Cassette 4 pick-up detection PS4cu Cassette 4 paper detection PS5cu Right door open/closed detection PS6cu Cassette 5 pick-up detection PS7cu Cassette 5 paper detection Clutch...
  • Page 104 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS G. Paper Deck Pedestal-K1 PS12 Figure 6-606 Figure 6-607 6–14...
  • Page 105 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS Symbol Name Notation Description Photointerrupters Deck paper sensor Deck vertical path roller paper sensor Deck lifter position sensor Deck lifter upper limit sensor Left door open sensor Deck open/closed sensor Motor Pedestal motor Clutch Deck pick-up clutch Deck vertical path roller drive clutch...
  • Page 106 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS H. Variable Resistors (VR) and Caution: Do not touch VRs or check pins not mentioned Check Pins by PCB herein. They are for factory use only and require special tools and instruments for highly precise Of the VRs and check pins used in the machine, adjustment.
  • Page 107 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 2. Composite Power Supply PCB Figure 6-609 3. Service Switch PCB SW850 VR850 VR860 Figure 6-610 6–17...
  • Page 108 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 4. Fixing Heater Driver PCB J401 Figure 6-611 6–18...

  • Page 109: Outline

    SERVICE MODE CHAPTER 7 SERVICE MODE A. Outline B. Using Service Mode 1. Starting Service Mode The machine’s service mode is grouped into the following six: 1) Open the front door, and insert the door switch actuator. • If you want to make checks as in “I/O display Description mode”...
  • Page 110 SERVICE MODE 4. Using Adjustment Mode (‘3’) and 7. Recording on the Service Label Machine Settings Mode (‘5’) Figure 7-701 shows the label attached behind the front door. Each machine is adjusted and set at 1) Press the numeric keypad to change the num- the factory, and the appropriate values are re- ber.

  • Page 111: Control Display Mode ('1')

    SERVICE MODE C. Control Display Mode (‘1’) • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To deselect an item, press the Clear key. • A press on the Start key while a description of the selected service mode is indicated will execute appropriate copying operations.
  • Page 112 SERVICE MODE No. 101 Jam Location Display The type of jam is indicated using the copy counter. LED (ON) Type of jam LED (ON) Type of jam Pre-registration delay jam Cassette 5 pick-up delay jam Pre-registration stationary jam Cassette 5 pick-up stationary jam Separation delay jam Duplexing unit inlet delay jam Separation stationary jam...
  • Page 113 SERVICE MODE No. 120 Jam interval indication Service program 122 displays the drawer selec- tion at jam occurrence: By pushing key Jam interval indication 120 First lates jam interval. Upper drawer. Second latest jam interval. Lower drawer. Third latest jam interval. Stack bypass.

  • Page 114: Chapter 7 Service Mode

    SERVICE MODE D. I/O Mode (‘2’) • To start I/O display mode, press ‘2’ (numeric keypad) and then the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To deselect an item, press the Clear key. •...
  • Page 115 SERVICE MODE No. 214, No. 215, No. 216, No. 217, and No. 218 Item Description Cassette 3 paper present ON: light-blocking plate present (paper absent) Cassette 3 vertical path sensor (PS1cu) ON: light-blocking plate present (paper present) Cassette 5 vertical path sensor (PS3cu) ON: light-blocking plate present (paper present) Reserved –...
  • Page 116 SERVICE MODE No. 219, No. 220, and No. 221 Item Description Cassette size 1 (cassette 4/5) ON: light-blocking plate present Cassette size 2 (cassette 4/5) ON: light-blocking plate present Cassette size 3 (cassette 4/5) ON: light-blocking plate present Cassette size 4 (cassette 4/5) ON: light-blocking plate present Option cassette connection detection 3 See the table below.
  • Page 117 SERVICE MODE No. 222 Port P0 Display Description Item Registration sensor (PS6) ON: paper present Delivery sensor (PS8) ON: paper present Lens home position sensor (PS2) ON: at HP Blanking shutter home position sensor (PS3) ON: at HP Halogen lamp check signal OFF: E220 error Heater ON detection (triac short circuit detection) ON: hater ON detected...

  • Page 118: Adjustment Mode ('3')

    SERVICE MODE E. Adjustment Mode (‘3’) • To start the mode, press ‘3’ on the numeric keypad and press the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. •...
  • Page 119 SERVICE MODE Item Settings Description Left/right margin adjustment –10 ~ +10 A higher setting increases both left and (reduction; the movement of the right margins. blanking slide shutter) default: –2 unit: 0.27 mm Primary output voltage correction Enter the value recorded on the label –16 ~ +16 (correction against the output attached to the drum cartridge whenever...
  • Page 120 SERVICE MODE Item Settings Description Duplex paper stack timing 0 ~ 63 A higher setting delays the ON timing. adjustment unit: 0.27 mm default: Set-back roller reversal timing 0 ~ 63 A higher setting delays the reversal timing. adjustment unit: 0.27 mm default: Lamp intensity adjustment 40 ~ 200...

  • Page 121: Operation/Inspection Mode ('4')

    SERVICE MODE F. Operation/Inspection Mode (‘4’) • To start inspection mode, press ‘4’ (numeric keypad) and then the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. • To execute the mode, press the Start key. •...

  • Page 122: Machine Settings Mode ('5')

    SERVICE MODE G. Machine Settings Mode (‘5’) • To start machine settings mode, press ‘5’ (numeric keypad) and then the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. •...
  • Page 123 SERVICE MODE Item Description Universal cassette paper size settings: 0 to 14 storage (cassette 4) default: Universal cassette paper size settings: 0 to 14 storage (cassette 5) default: Book frame erase width settings: 0 to 20 default: Table 7-714-2 7–15...

  • Page 124: Counter Mode ('6')

    SERVICE MODE H. Counter Mode (‘6’) • To start counter mode, press the ‘6’ key on the numeric keypad and press the AE key. • To select an item, press the appropriate number on the numeric keypad and then the Start key. •...
  • Page 125 SELF DIAGNOSIS CHAPTER 8 SELF DIAGNOSIS The microprocessor on the machine’s DC con- Detecting an error associated with ‘E000’ will troller is provided with a self diagnosis mechanism automatically turn OFF the power. (error auto power- which checks the condition of the machine (sensors off) in particular) and indicates a code to identify the error it detects.
  • Page 126 SELF DIAGNOSIS Possible cause Description Code • Deck motor (M1dk; faulty) The lifter does not reach the lifter sensor E041 • Deck lifter clutch (CL4dk; faulty) (PS3dk) within 40 sec after the deck lifter • Lifter sensor (PS3dk; faulty) clutch (CL4dk) has turned ON. •...
  • Page 127 SELF DIAGNOSIS 1) Open the front door, and insert the door switch Initializing Back-Up Error Codes If the self-diagnosis mechanism has turned ON, actuator. you can reset the machine by turning OFF and then 2) While holding down the service mode switch ON the power switch, unless the error is repre- (SW850) on the DC controller, turn the power sented by ‘E000’, ‘E001’, ‘E002’, “E003', or ‘E004’.
  • Page 128 SELF DIAGNOSIS B. Self Diagnosis on the Cassette Feeding Unit Code Cause Description • Cassette feeding unit control- • The motor clock signal is not detected E901 ler (faulty) within 1 sec after the pedestal motor • Cassette feeding unit motor drive signal has been generated.

  • Page 129: Rdf/Adf Self Diagnosis

    SELF DIAGNOSIS C. RDF/ADF Self Diagnosis Code Cause Description • Data communication with • Communication breaks for 5 sec or E400 copier (faulty) more. (The communication is monitored at all times.) • Pick-up motor (faulty) • The state of the sensor remains un- E401 •...

  • Page 130: Sorter Self Diagnosis

    SELF DIAGNOSIS D. Sorter Self Diagnosis Code Cause Description • CPU or communication IC on • An error has been detected in the E500 sorter controller (faulty) communication between the sorter and the copier. • Feeding motor (fails to • The clock signal from the motor is E510 rotate) absent for 250 ms or more.

  • Page 131: Appendix

    APPENDIX A. GENERAL TIMING CHART (A4, 2 copies, Direct, from copier cassette) A4, 2 copies, DIRECT, cassette 1 Power switch Copy start key Sequence STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Pre-exposure lamp TTTTTT  SSSSS  Primary charging (APVC) Primary charging bias...
  • Page 132 B. SIGNALS AND ABBREVIATIONS 1. Signals CSZ3 CASSETTE SIZE signal 3 A/A* HORIZONTAL REGISTRATION / DELIVERY/ DUPLEX MOTOR PHASE A CSZ4 CASSETTE SIZE signal 4 ACBIAS DEVELOPING AC BIAS VOLTAGE DETECTION signal CVOP CCPYBOARD COVER OPEN signal AE SENSOR OUTPUT signal AE DECK LIFTER LIMIT signal AEREF AE SENSOR REFERENCE signal AE...
  • Page 133 PWSW POWER SWITCH command RDOP RIGHT DOOR OPEN signal RGCLD REGISTRATION CLUTCH DRIVE command RGHP DUPLEXING UNIT REGISTRATION ROLLER HOME POSITION DETECTION signal REGISTRATION PAPER DETECTION signal SCA/A* SCANNER MOTOR PULSE command A/A* SCB/B* SCANNER MOTOR PULSE command B/B* SCHP SCANNER HOME POSITION DETECTION signal SELECT CASSETTE4/5 SELECT signal...
  • Page 134 APPENDIX A–4...
  • Page 135 APPENDIX C. GENERAL CIRCUIT DIAGRAM not available A–5...
  • Page 136 APPENDIX A–6...

  • Page 137: Specifications

    APPENDIX D. SPECIFICATIONS I. Copier 1. Type Description Item Desktop Body Copyboard Fixed Light source Halogen lamp Lens Zoom Photosensitive medium 2. System Item Description Copying Indirect electrophotographic Charging Roller (direct charging) Slit (moving light source) Exposure Automatic (AE) or manual Copy density adjustment Development Dry (toner projection)
  • Page 138 Control Card IV N, Stapler Sorter D1, MS-B1, ADF-E1, Cassette Feeding Unit-K1, Paper deck pedestal-K1, Remote Diagnostic Device II Caution: 1. Use Canon-recommended paper. 2. Remove curling before feeding for a second time. 3. Fan out the transparencies before setting them on the multifeeder to prevent adhesion. A–8...
  • Page 139 APPENDIX 4. Others Item Specifications Temperature 7.5°C to 32.5°C/45.5 to 90.5°F Operating environment Humidity 5% to 85% Atmospheric pressure 810.6 hPa to 1013.3 hPa (0.8 to 1 atm) Serial numbers Power supply 230 V 50 Hz QBSxxxxx, UDNxxxxx, SBExxxxx, TBHxxxxx, UDPxxxxx Standby 0.042 kWh (reference only) Power consumption...
  • Page 140 APPENDIX Reproduction ratio Copy size Q’ty (297 × 420) (210 × 297) (148 × 210) (257 × 364) DIRECT 1: 1 (±0.5%) (182 × 257) (297 × 210) (210 × 148) (257 × 182) → A5R 1: 0.500 (+1.0%) → A5R REDUCE 1: 0.707 (+1.0%) →...

  • Page 141: Cassette Feeding Module-B2/Cassette Feeding Module-A2/ Cassette Feeding Unit-K1

    APPENDIX II. Cassette Feeding Module-B2/Cassette Feeding Module-A2/ Cassette Feeding Unit-K1 Copy paper type Same as copier Same as copier Cassette specifications Power supply 34 VDC, 24 V, 5 V (supplied by copier) Dimensions (W×D×H; mm/in.) Cassette Feeding Module-B2: 585×622×105/23.0×24.5×4.1 Cassette Feeding Module-A2: 585×622×210/23.0×24.5×8.3 Cassette Feeding Unit-K1: 585×622×384/23.0×24.5×15.1...

  • Page 142: Special Tools

    APPENDIX E. SPECIAL TOOLS See the table for the special tools used to service the machine in addition to the standard tools set. Tool name Tool No. Shape Rank Remarks TKN-0093- Door switch actuator For adjusting the Mirror positioning FY9-3009-040 distance between No.

  • Page 143: Solvents/Oils

    APPENDIX F. SOLVENTS/OILS Name Composition Description Ethyl alcohol Cleaning: • Flammable. (Ethanol) copyboard glass, • Use in a well-ventilated area. (CHZ CHOH mirror, etc. • Avoid breathing concentrated Isopropyl vapor. alcohol (Isopropanol) Removing toner or • CO • C • Flammable. oil stains Methylethyl ketone •...
  • Page 144 APPENDIX A–14...
  • Page 145 Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION CANON INC. Printed in Japan REVISION 0 (FEB. 1998) (31625) 5-1, Hakusan 7-chome, Toride-shi Ibaraki, 302-0023 Japan...
  • Page 146 This publication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIME AU JAPON) 0398S1.21-1...

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