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Canon FY8-13EX-000 C. Troubleshooting Faulty Images, The copy is too light half-tone only, 10-49

Models: FY8-13EX-000 NP6218

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Page 313

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CHAPTER 10 TROUBLESHOOTING

C. Troubleshooting Faulty Images

1. The copy is too light (half-tone only).

Cause	Step	Checks	Results	Action
	1	Perform the Basic Image	YES	End.
		Adjustment Procedure. Is the
		problem corrected?
AE mechanism	2	Make copies in AE mode. Is the	YES	Perform AE adjustment.
		density too low, i.e., is the copy
		too light?

Developing assembly

Scanner

Drum cartridge

3Is the developing cylinder coated with a uniform layer of toner?

4Clean the mirror, lens, and dust- proofing glass. Is the problem corrected?

NO	Replace the developing
	assembly.
YES	End.
NO	Replace the drum
	cartridge.

CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

10-49

Page 313

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Canon FY8-13EX-000, NP6218 service manual C. Troubleshooting Faulty Images, The copy is too light half-tone only, 10-49

Contents

FY8-13EX-000 SERVICE MANUALREVISION COPYRIGHT 1997 CANON INCCANON INC COPYRIGHT 1997 CANON INC Printed in Japan Imprimé au JaponINTRODUCTION and consumables/durables and scheduled servicing charts System Configuration COPYRIGHT 1997 CANON INC 1. GENERAL DESCRIPTIONCANON NP6218 REV.0 MAR. 1997 PRINTED IN JAPAN IMPRIMÉ AU JAPON CHAPTER 2 BASIC OPERATION CHAPTER 1 GENERAL DESCRIPTIONCONTENTS CHAPTER 4 IMAGE FORMATION SYSTEM CHAPTER 3 EXPOSURE SYSTEMCHAPTER 5 PICK-UP/FEEDING SYSTEM viii CHAPTER 6 FIXING SYSTEMCHAPTER 9 MAINTENANCE AND SERVICING CHAPTER 8 INSTALLATIONCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS CHAPTER 10 TROUBLESHOOTING 10.The copy has white spot APPENDIX CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER GENERAL DESCRIPTION4. Practical basic features I. FEATURES1. Multiple front loading and multifeeder for space saving 2. Office amenities and ecologyA. Copier II. SPECIFICATIONS1. Type 2. System1. Use Canon-recommended paper 3. Features2. Remove curling before feeding for a second time Table 1-201 Standard Reproduction Ratios 4. OthersOperating environment 1 1 ±0.5%Table 1-202 Copying Speed B. Cassette Feeding Module-B2/Cassette Feeding Module-A2A. Exterior View III. NAMES OF PARTS1. Body B. Cross Sectionq Cassette 2. Cassette Feeding Module-A2r Cassette 3 pick-up roller w CassetteA. Control Panel IV. OPERATION1-10 B. Operation Mode1-11 C. Making Two-Sided/Overlay Copies manual1. Outline D. User Mode1-12 Changing the Auto Power-Off Time 2. Common Operations a. Keys to Use in User Modeb. Operation 3. Changing the Auto Clear TimeReference Zoom Fine-Adjustment1-14 1-15 Turning On and Off the Auto Cassette Change Mechanism1-16 Cleaning the Feeder with ADF installed-option10. Initializing User Mode Selecting the Density Adjustment Method for Standard Mode1-17 1-18 11. Quick Guide to User ModeCHAPTER 1 GENERAL DESCRIPTION COPYRIGHT 1997 CANON INCV. WARNINGS AND ACTIONS VI. ROUTINE MAINTENANCE BY THE USERE. Handling the Toner Bottle Handling the Toner BottleA. Outline VII. IMAGE FORMATION1-20 The NP6218 generates images in the following eight steps 1-21CHAPTER 1 GENERAL DESCRIPTION 1-22COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER BASIC OPERATION A. Functional Construction I. BASIC CONSTRUCTIONCHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCSorter accessory B. Outline of the Electrical Circuitry+24V Transfer currentC. Basic Sequence of Operations 2 copies continuous, AE 2. Mechanism D. Main Motor Control Circuit1. Outline 1. Inputs to the DC Controller PCB 1/3 E. Inputs to the DC Controller PCBCHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCHAPTER 2 BASIC OPERATION 2. Inputs to the DC Controller PCB 2/3COPYRIGHT 1997 CANON INC CHAPTER 2 BASIC OPERATION 3. Inputs to the DC Controller PCB 3/3COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON1. Outputs from the DC Controller PCB 1/3 F. Outputs from the DC Controller PCBCHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCHAPTER 2 BASIC OPERATION 2. Outputs from the DC Controller PCB 2/3COPYRIGHT 1997 CANON INC 2-10 3. Outputs from the DC Controller PCB 3/3CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INC1. Inputs to and Outputs from the 1-Cassette Unit Driver PCB 1/1 G. Inputs to and Outputs from the 1-Cassette Unit Driver PCB2-11 CHAPTER 2 BASIC OPERATION1. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 1/2 H. Inputs to and Outputs from the 2-Cassette Unit Driver PCB2-12 CHAPTER 2 BASIC OPERATION2-13 2. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 2/2CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCHAPTER 2 BASIC OPERATION 2-14COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER EXPOSURE SYSTEM II. LENS DRIVE SYSTEM I. BASIC OPERATIONA. Varying the Reproduction Ratio A. OutlineCOPYRIGHT 1997 CANON INC CHAPTER 3 EXPOSURE SYSTEMChange solenoid SL1 Lens motor M3 Lens cable 1. Keeping the Lens Motor Stationary B. Lens Motor Drive Circuit2. Driving the Lens Motor C. Basic Sequence of Operations lens drive system non-Direct A. Driving the Scanner III. SCANNING DRIVE SYSTEM1. Outline 3. Basic Sequence of Operations scanner 2. Relationship between the Scanner Sensor and SignalsReference Scanner sensorb. Mechanism 4. Driving the Scanner Motor a. OutlinePage A. Scanner Drive Assembly IV. DISASSEMBLY AND ASSEMBLY1. Detaching the Scanner Drive Motor 3-10 2. Detaching the Scanner Cablefront 3-113-12 3. Assembling the Mirror Position Tool3-13 4. Routing the Scanner Cable5 Tighten the screw loosened in e, and fix the cable to the left stay 3-14Hook Wirespring 3-15Wirespring Hook3-16 3-17 6. Cleaning the Scanner No. 6 Mirror1. Detaching the Lens Drive Motor B. Lens Drive Assembly3-18 6 Disconnect the two connectors y from the copier’s rear 3-192. Routing the Lens Cable Figure 3-421 Lens Drive Assembly3-20 CHAPTER 3 EXPOSURE SYSTEM3-21 3. Adjusting the Position of the Change SolenoidA B CHAPTER 3 EXPOSURE SYSTEM 3-22COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER IMAGE FORMATION SYSTEM Composite Power Supply PCB DC controller PCB I. PROCESSESA. Outline COPYRIGHT 1997 CANON INC CHAPTER 4 IMAGE FORMATION SYSTEM1 AE only 2 half pre-heating control 3 full pre-heating control B. Basic Sequence of Operations image formation system4 ON pre-heating control CHAPTER 4 IMAGE FORMATION SYSTEM1. Outline C. Controlling the Scanning Lamp3. Pre-Heating Control scanning lamp 2. Turning On and Off the Scanning LampInput Signals from the DC Controller to the Composite Power Supply PCB 5. Controlling the Intensity of the Scanning Lamp FL1 6. Controlling the Fluorescent Lamp Heater 8. Fluorescent Lamp Protection Mechanism 7. Fluorescent Lamp AutomaticCorrection Control ALVC control Reference4-10 D. Controlling the Primary Charging Roller Bias1. Outline drive circuit3. Controlling the Primary Charging Roller Bias to a Constant Voltage 2. Turning On and Off the Primary Charging Roller Bias4-11 4-12 E. Controlling the Transfer Roller Bias b. Cleaning Biasa. Transfer Bias c. Reference Bias ATVCturns on and off the transfer roller bias 4-142. Turning On and Off the Transfer Roller Bias 6. Current Limiter Circuit cleaning bias3. Controlling the Transfer Bias to a Constant Voltage 5. Current Limiter Circuit transfer bias4-16 F. Controlling the Static Eliminator Bias1. Outline 3. Ensuring Proper Separation of Thin Paper 2. Switching the Static Eliminator Bias Voltage Level4-17 4-18 G. Controlling Blank Exposure1. Outline Blanking shutter home position sensor PS33. Blanking Whiting Out the Leading/Trailing Edges and between Copies 2. Blanking Whiting of Non-Image Areas for Reduction4-19 2. Primary Charging Roller Cleaning Operation H. Controlling the Primary Corona Roller Cleaning Mechanism4-20 Fulcrum Fulcrum Cleaning pad4-21 I. Releasing the Transfer Roller1. Outline 4-22 II. DEVELOPING ASSEMBLY AND CLEANING ASSEMBLYA. Outline Toner container4-23 B. Controlling the Toner Level Detectionq When the Level of Toner Is Adequate 4-244-25 C. Controlling the Development Bias1. Outline 4-26 3. Turning On and Off the AC Component of the Development Bias2. Control Method D. Automatic Control of Copy Density4-27 1. Outline4-28 Figure 4-207 Area Read by the AE Sensor ReferenceCHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC4-29 3. AE Adjustmentlamp intensity automatic adjustment No. 301 during AE scans copy density development bias slope adjustment No. 303 during AE modeA. Illumination Assembly III. DISASSEMBLY AND ASSEMBLY1. Detaching the Scanning Lamp/Fluorescent Lamp Heater 4-304-31 u ytCHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC60mm 1~5mm4-32 60mm4-33 Figure 4-306 front view4-34 3. Detaching the Blank Exposure AssemblyReference 4-35 4. Detaching the Blank Exposure LampCHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC4-36 5. Detaching the Blank Shutter SolenoidFigure 4-314a 6. Positioning the Blank Shutter SolenoidFigure 4-314b 4-378. Positioning the Left/Right Margin 7. Routing the Blanking Cable4-38 1. Detaching the Drum Unit B. Drum Unit4-39 CHAPTER 4 IMAGE FORMATION SYSTEM4-40 2. Cleaning1. Detaching the Primary Corona Assembly C. Primary Corona Assembly4-41 4-42 2. Cleaning the Cleaning Pad and the Primary Corona Roller4-43 3. Positioning the Solenoid for the Primary Charging Roller1. Detaching the Transfer Roller D. Transfer Charging Assembly2. Attaching the Drum Heater 4-445 Detach the transfer roller and the static eliminator 4-459 Connect the connector y as shown in Figure 4-46CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC2. Removing the Blade Assembly 1. Removing the Developing AssemblyE. Developing System 4-474-48 3. Removing the Developing Cylinder Side Seali o !0 t r e y e4-49 CHAPTER 4 IMAGE FORMATION SYSTEM6 Remove the screw !1, and remove the butting roll !2and roll case !3 4-507 Remove the developing cylinder !4 CHAPTER 4 IMAGE FORMATION SYSTEM4-51 4. Installing the Side Seal and the Blade AssemblyCHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC3 Check that the side seal and the container are in firm contact 4-52CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INCCHAPTER PICK-UP/FEEDING SYSTEM A. Outline I. PICK-UP/FEEDING SYSTEMMultifeeder PS3cuSensor No A. Outline II. PICK-UP OPERATION COPIERCHAPTER 5 PICK-UP/FEEDING SYSTEM B. Sequence of Operations pick-up/feeding assembly A4, 2 copiesCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONA. Pick-Up Operation III. PICK-UP FROM THE CASSETTE FEEDING MODULE-A2CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Sequence of Operations cassette 2 A4, 2 copiesCOPYRIGHT 1997 CANON INC STBYA. Outline IV. MULTIFEEDERReference B. Identifying the Size of Paper on the MultifeederCHAPTER 5 PICK-UP/FEEDING SYSTEM C. Sequence of Operations multifeeder A4, 2 copiesCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON5-10 V. IDENTIFYING THE CASSETTE SIZEReference 5-11Guide plate horizontal Paper size lever Guide plate vertical Figure 5-601 Pre-Registration Delay Jam Sequence A. Pre-Registration Delay JamVI. IDENTIFYING JAMS 5-12C. Pre-Registration Stationary Jam B. Pre-Registration Timing JamFigure 5-602 Pre-Registration Timing Jam Sequence Figure 5-603 Pre-Registration Stationary Jam SequenceFigure 5-604 Separation Delay Jam Sequence D. Separation Delay JamE. Separation Stationary Jam Figure 5-605 Separation Stationary Jam SequenceFigure 5-606 Delivery Delay Jam Sequence F. Delivery Delay JamG. Delivery Stationary Jam Figure 5-607 Delivery Stationary Jam SequenceA. Pick-Up Assembly VII. DISASSEMBLY AND ASSEMBLY1. Detaching the Pick-Up Roller Unit 5-163 Open the lower right cover 5-176 Push in the bushing t at the rear toward the front, and lower the spring pressure to remove the pick-up unit toward the left of the copier 5-185-19 2. Detaching the Pick-Up Roller4. Detaching the Pick-Up Clutch 3. Points to Note When Attaching the Pick-Up Roller5-20 5-21 5. Detaching the Separation PadCHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT 1997 CANON INCa. Pick-Up from the Cassette 6. Adjusting the Left/Right Registration5-22 1. Detaching the Multifeeder Assembly B. Multifeeder Assembly5-23 CHAPTER 5 PICK-UP/FEEDING SYSTEMq w e 2. Detaching the Multifeeder Pick-Up Roller Unit5-24 CHAPTER 5 PICK-UP/FEEDING SYSTEM5-25 3. Detaching the Multifeeder Pick-Up Roller5-26 4. Points to Keep Note When Attaching the Multifeeder Pick-Up Rollerw on the collar is toward the rear 5. Detaching the Separation Pad5-27 6. Detaching the Multifeeder Drive Unit5-28 7. Detaching the Multifeeder Clutch5-29 8. Positioning the Multifeeder Assembly paper guide plate cam10. Points to Note When Attaching the Multifeeder Assembly Rack Plate 9. Adjusting the Left/Right Registration5-30 1. Detaching the Registration Clutch C. Registration Roller Assembly2. Detaching the Upper Registration Roller 5-31Take care not to misplace the springs front, rear 5-323 Lift the upper registration roller e to detach CHAPTER 5 PICK-UP/FEEDING SYSTEM5-33 3. Detaching the Lower Registration Roller1. Detaching the Feeding Belt D. Feeding Assembly5-34 5 Detach the static eliminator 5-356 Detach the feeding spacer t from the hook arrow CHAPTER 5 PICK-UP/FEEDING SYSTEM1. Detaching the Copier from the Cassette Feeding Module E. Cassette Feeding Module2. Detaching/Attaching the Pick-Up Roller 3. Detaching the Pick-Up ClutchCHAPTER FIXING SYSTEM A. Outline I. BASIC OPERATIONSCOPYRIGHT 1997 CANON INC CHAPTER 6 FIXING SYSTEMB. Controlling the Fixing Heater Temperature CHAPTER 6 FIXING SYSTEM ReferenceCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONHTRD Supply power to heater C. Controlling the Supply Power for the Fixing HeaterE. Protection Mechanism D. Detecting Overheating at the End of the Fixing Heater1. Thermistor TH1, TH2 2. Thermal Fuse FU11. Outline F. Correcting Displacement of the Fixing FilmReference Fixing filmNormal ON OFF rear ON OFF ON front OFF unit mm Fixing film rear front Tension roller OFF Drive roller ONFixing belt motor M4 Tension roller rear view displacement to the rear displacement to the front6-10 2. Controlling the Fixing Film MotorA. Fixing Assembly II. DISASSEMBLY AND ASSEMBLY1. Construction1 6-116-12 2. Detaching the Upper Fixing UnitCHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INC6-13 6-14 er tCHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INCi o!0 y u t6-15 CHAPTER 6 FIXING SYSTEM9 Pull out the fixing film !2toward the front 6-1610 Detach the tension roller !3 CHAPTER 6 FIXING SYSTEM11 Remove the screw !4, and detach the fixing film sensor !5 6-1712 Remove the E-ring !6 CHAPTER 6 FIXING SYSTEM@2 @1 9 !8 !76-18 CHAPTER 6 FIXING SYSTEM16 Remove the two screws @3, and detach the fixing film motor unit @4 6-195. Points to Note When Attaching the Heater Connector 4. Points to Note When Attaching the Fixing Film6-20 7. Adjusting the Fixing Film Drive Roller Pressure 6. Points to Note When Replacing the Fixing Upper UnitFigure 6-220 rear view 6-21The copier enters fixing tension roller mode 6-226-23 8. Detaching the Lower Fixing Unit6-24 6-25 10. Adjusting the Lower Fixing Roller Nip6-26 a. Measuring the NipReference 6-27 B. Delivery AssemblyCHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INCCHAPTER 6 FIXING SYSTEM 6-28COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONEXTERNALS/AUXILIARY MECHANISMS CHAPTERA. Outline I. POWER SUPPLYCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INCReference B. Power Supply Circuit AssemblyCOPYRIGHT 1997 CANON INC CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 2. Error in the High-Voltage Output Data C. Detecting Errors in the Power Supply PCB3. Low-Voltage Output Data Error 4. Overcurrent in the Low-voltage Power SupplyD. Protection Mechanisms for the Power Supply Circuit II. DISASSEMBLY AND ASSEMBLY A. External Coverscover COPYRIGHT 1997 CANON INC CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 1. Detaching the Control Panel B. Control Panel1. Detaching the Exhaust Fan C. Fans7-10 2. Detaching the Main Drive Assembly D. Main Motor/Main Drive Assembly1. Detaching the Main Motor Unit 7-119 Turn the pulley i clockwise, and detach the belt o 7-127-13 3. Routing the Drive Belt1. Detaching the Pick-Up Drive Unit E. Cassette unit7-14 CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS2. Detaching the Cassette Motor r y r t t rq e w q 7-157-16 3. Detaching the Cassette Driver PCBCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INCF. DC Controller PCB 2. Points to Note When Replacing the DC Controller PCB1. Detaching the DC Controller PCB 7-171. Detaching the Composite Power Supply PCB G. Composite Power Supply PCB7-18 6 Remove the three screws !0, and detach the power cord mount !1 7-197-20 2. Points to Note When Handling the Composite Power Supply PCB1. Points to Note When Replacing the Intensity Sensor 1. Points to Note When Replacing the AE SensorH. AE Sensor PCB I. Intensity Sensor PCBCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 7-22COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER INSTALLATION I. SELECTING THE SITE A. Unpacking and Removing Fixings II. UNPACKING AND INSTALLING THE COPIERStep Step B. Turning On the Copier Step Step C. Checking the Images and Operations Check/Remarks D. Attaching the Drum Unit8-10 E. Changing the Cassette SizeA5 R A4 8-11R A4 8-12 8-13 III. RELOCATING THE COPIERDirect position refers to 8-14 IV. REPLACING THE DRUM UNITGo through the following when replacing the drum unit Step 8-15Step 8-168-17 V. INSTALLING THE CONTROL CARD IV N10 Disconnect the copier’s dummy connector r 8-1811 Connect the connector t of the Control Card IV N CHAPTER 8 INSTALLATIONA. Unpacking VI. CASSETTE HEATER KIT 5 INSTALLATION PROCE- DURE8-19 CHAPTER 8 INSTALLATION8-20 B. Installation to a Cassette Feeding Module-A2/B2Screws 8-216 Close the cover 8-22Copiers connector Molded member Copiers base plate 8-23CHAPTER 8 INSTALLATION Cassette Feeding Module-B2Relay harness 8-2412 Install the rear cover of the cassette pedestal and all covers 8-2513 Install the copier’s rear cover CHAPTER 8 INSTALLATION8-26 VII. INSTALLING THE REMOTE DIAGNOSTIC DEVICEA. Unpacking y *Not used u *Not used8-27 B. Installation to the Copier4 Connect the cable o on the copier side and the RDD’s cable 8-28CHAPTER 8 INSTALLATION 8-29Modular Jack on the Right COPYRIGHT 1997 CANON INC1. If the ROM IC6 !2 is not mounted, you need not mount it 8-30CHAPTER 8 INSTALLATION 8-31COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONLED1 LED2 LED3 8-3211 Reset the RDD’s RAM 8-33SW2-1 SW2-212 After making sure that LED5 !8red has come on, set the bits on the DIP switch 2 !6on the RDD’s PCB as indicated in the table, and press the push switch 4 !7to make sure that LED5 !8red goes out, indicating that the RAM has been reset 8-3413 Shift bit 6 of the DIP switch 2 !9on the RDD’s PCB to OFF 8-35service station 8-36normally 8-37w @7 q w 8-38CHAPTER MAINTENANCE AND SERVICING A. Periodically Replaced Parts I. PERIODICALLY REPLACED PARTSA. Copier II. DURABLESLower fixing separation claw B. Cassette Feeding Module-B2/Cassette Feeding Module-A2 Perform work according to the number III. PERIODICAL SERVICINGclean replace lubricate adjust inspector clean IV. SERVICING CHARTDo not use solvents or oils other than those specified Do NOT throw the drum kits into fire it can burst or explode V. NOTES ON DRUM KITOtherwise, dispose of it as nonflammable material CHAPTER TROUBLESHOOTING 10-1 Guide to Troubleshooting TablesCHAPTER 10 TROUBLESHOOTING 10-2COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONA. Image Adjustment Basic Procedure I MAINTENANCE AND INSPECTION10-3 COPYRIGHT 1997 CANON INC10-4 B. Periodical ServicingCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONA. Image Adjustment II. STANDARDS AND ADJUSTMENTS10-5 Reference 10-62.0±1.0mm 2.5± 1.5mm 10-710-8 4. Adjusting the Left/Right Registration10-9 5. Adjusting the Left/Right Margin No. 311 left/right marginAdjust the distance between the two shutters in the blanking assembly Shutter10-10 6. Adjusting the Scanning Lamp Intensitypositioning Reference10-11 7. AE Adjustment10-12 Figure 10-210 DC Controller PCBVR391 2 Press 2 on the keypad The copier indicates ‘302’ 10-13After adjustment with 10-14service mode causes causes the AE copies1. Routing the Scanner Drive Cable B. Exposure System10-15 10-16 4. Assembling the Mirror Positioning Tool 3. Adjusting the Scanner Cable Tension10-17 Position B Longest pinCHAPTER 10 TROUBLESHOOTING 10-181~5mm 60mm10-19 Figure 10-220 front viewReference 10-20 6. Positioning the Change Solenoid1. Positioning the Blank Shutter Solenoid C. Image Formation SystemFigure 10-223a Figure 10-223b10-22 2. Routing the Blank Shutter Cable3. Positioning the Solenoid for the Primary Charging Roller Attach the spring to the outside of the sides shutter5. Attaching the Drum Heater 4. After Replacing the Drum Unit10-23 9 Connect the connector y as shown in Figure 10-241. Orientation of the Pick-Up Roller D. Pick-Up/Feeding System2. Orientation of the Multifeeder Pick-Up Roller 10-2510-26 3. Positioning the Paper Guide Plate Cam multifeederE. Fixing System 2. Points to Note When Attaching the Heater Connector10-27 Figure 10-236 rear view 3. Adjusting the Fixing Film Drive Roller Pressure10-28 10-29 4. Points to Note after Replacing the Fixing Upper Unit10-30 5. Adjusting the NipReference 7. Storing the Fixing Heater Resistance 6. Routing the Drive Belt10-31 Figure 10-240 Heater Stay Side Plate rear 8. Setting the Fixing Heater Temperature Control Value10-32 8-1 When Replacing the Fixing Upper Unit10-33 Example10 Enter ‘4’ using the keypad, and set the copy count 10-341. After Replacing the PCB F. Electrical2. Clearing the Back-Up RAM 10-3510-36 3. Checking the PhotointerruptersReference ReferenceService mode 10-37a. Copier by hand whileService mode 10-38b. Cassette Feeding Unit 10-39Name 10-40Name 10-41Name 10-4210-43 4. Adjusting the Multifeeder Paper Width SensorClear Clears settings Reference10-44 5. Setting the Paper Size for the Universal CassetteGovernment-R A. Initial Checks III. TROUBLESHOOTING IMAGE FAULTS1. Site Environment 2. Checking the Originals10-46 5. OthersCHAPTER 10 TROUBLESHOOTING 10-47COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON10-48 B. SAMPLES OF IMAGE FAULTSCHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC1. The copy is too light half-tone only C. Troubleshooting Faulty Images10-49 3. The copy is too light overall, extremely 2. The copy is too light black solid also10-50 Cause 10-515. The copy has uneven density front too light 4. The copy has uneven density front too dark10-52 10-53 6. The copy is foggy overall8. The copy has black lines vertical thick fuzzy lines 7. The copy is foggy vertical9. The copy has black lines vertical, fine 10-5411. The copy has white lines vertical 10. The copy has white spot vertical10-55 10-56 12. The copy has white spots horizontal10-57 13. The back of the copy is soiled15, 16, 17 The leading edge of the copy is displaced 14. The copy has a fixing fault10-58 10-59 18. The copy has a blurred image10-60 19. The copy is foggy horizontalDeveloping assembly spacer 10-61 20. The copy has poor sharpness22. The copy is solid black 21. The copy is blank10-62 A. Troubleshooting Malfunctions IV. TROUBLESHOOTING MALFUNCTIONSE000 10-63E002, E003 E00110-64 E007 E00410-65 E030 E01010-66 9. E202 keys on control panel invalidated E06410-67 11. E220 10. E21012. E240 10-6814. E710, E711, E712, E717 13. E26115. E803 10-6910-70 16. AC power supply is absent10-71 17. DC power supply is absentConnector Pin No19. The photosensitive drum fails to rotate 18. The blank shutter fails to move10-72 21. The pick-up operation from the multifeeder fails 20. The pick-up operation fails from cassette10-73 23. The registration roller fails to rotate 22. The scanner fails to move forward/in reverse10-74 25. The lens fails to move 24. The scanning lamp fails to turn on10-75 26. The fixing heater fails to operate 28. The add paper indicator fails to turn off27. The pre-exposure lamp fails to turn on 10-7610-77 29 The jam message fails to turn offA. Jams copy paper V. TROUBLESHOOTING FEEDING PROBLEMS10-78 10-79 1. Pick-Up AssemblyFixing/Delivery Assembly 2. Separation/Feeding AssemblyDelivery 1. Double feeding B. Feeding Faults2. Wrinkling 10-81A. Sensors VI ARRANGEMENT/FUNCTIONS OF THE ELECTRICAL PARTS10-82 CHAPTER 10 TROUBLESHOOTING10-83 10-84 B. Clutches, Solenoids, and SwitchesCHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-85 10-86 C. Motors, Heaters, and LampsCHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-87 10-88 D. PCBsCHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCName 10-8910-90 E. Cassette Feeding Module - A2CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCPhotointerrupter 10-911. DC controller PCB F. Variable Resistors VR and Check Pins by PCB10-92 10-93 2. Composite power supply PCBCHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCB. Using Service Mode VII. SERVICE MODE1. Activating Service Mode 10-944. Using Adjustment Mode 3 and Specification Mode 2. Selecting a Service Mode5. Using Operation/Inspection Mode 6. Clearing Stored Error Code10-96 7. Recording on the Service Mode Label10-97 C. Control Display ModeNo. 101 Jam Location Indicator 10-9810-99 D. I/O ModePress 2 on the keypad and the AE key to activate I/O display mode To clear an item, press the Clear keyLED copy count indicator from 201 to 10-100No. 201/202/203/204 Port C Digital Display Port H Display 10-10110-102 E. Adjustment ModeLeading edge margin adjustment for right face in page separation timingDescription 10-103Description 10-10410-105 F. Operation/Inspection ModeDescription 10-10610-107 G. Specification Settings Mode10-108 H. Counter ModeE001 E000E002 VIII. SELF DIAGNOSIS A. CopierE004 E003E007 E010E220 E210E240 E261Clearing an Error Code back-up data 10-112E402 E400E404 E41110-114 C. Self Diagnosis sorterE500 E510When an E code is indicated 10-115CHAPTER 10 TROUBLESHOOTING 10-116COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONAPPENDIX A4, 2 copies, Direct, from copier cassette A. GENERAL TIMING CHART1. Signals and Abbreviations B. SIGNALS AND ABBREVIATIONSCOPYRIGHT 1997 CANON INC C. GENERAL CIRCUIT DIAGRAMCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON COPYRIGHT 1997 CANON INCD. SPECIAL TOOLS E. SOLVENTS/OILS CANON INC Printed in Japan REVISION 0 MAY 1997 Prepared by5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302 Japan PRINTED IN JAPAN IMPRIMÉ AU JAPON This publication is printed on 70% reprocessed paper0797S0.7-2