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Canon FY8-13EX-000, NP6218 service manual C. Controlling the Supply Power for the Fixing Heater

Models: FY8-13EX-000 NP6218

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CHAPTER 6 FIXING SYSTEM

C. Controlling the Supply Power for the Fixing Heater

The temperature of the fixing heater is controlled by controlling the power supplied to the fixing heater.

The resistance of the plane-shaped heater used as the fixing heater may show some variation depending on which production lot it comes from.

For this reason, whenever you have replaced the copier’s heater, you must store the resistance value in service mode (No. 304; see p. 10-31); this way, the microprocessor on the DC controller PCB can exert proper control over power.

Caution:

The resistance of the fixing heater is stored in service mode at the time the copier is shipped out of the factory; do not change it unless you have replaced the fixing heater.

The power of the fixing heater is controlled by a phase power control method.

The microprocessor controls the output timing of the fixing heater drive signal (HTRD) so that power that suits the target temperature of the fixing heater may be supplied to the heater (potential control of the supply power).

HTRD

Supply power to heater

Figure 6-104

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

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Page 171

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Canon FY8-13EX-000, NP6218 service manual C. Controlling the Supply Power for the Fixing Heater, HTRD Supply power to heater

Contents

COPYRIGHT 1997 CANON INC SERVICE MANUALFY8-13EX-000 REVISIONCANON INC COPYRIGHT 1997 CANON INC Printed in Japan Imprimé au JaponINTRODUCTION and consumables/durables and scheduled servicing charts System Configuration 1. GENERAL DESCRIPTION COPYRIGHT 1997 CANON INCCANON NP6218 REV.0 MAR. 1997 PRINTED IN JAPAN IMPRIMÉ AU JAPON CHAPTER 1 GENERAL DESCRIPTION CHAPTER 2 BASIC OPERATIONCONTENTS CHAPTER 4 IMAGE FORMATION SYSTEM CHAPTER 3 EXPOSURE SYSTEMCHAPTER 5 PICK-UP/FEEDING SYSTEM viii CHAPTER 6 FIXING SYSTEMCHAPTER 8 INSTALLATION CHAPTER 9 MAINTENANCE AND SERVICINGCHAPTER 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 DESCRIPTION2. Office amenities and ecology I. FEATURES4. Practical basic features 1. Multiple front loading and multifeeder for space saving2. System II. SPECIFICATIONSA. Copier 1. Type3. Features 1. Use Canon-recommended paper2. Remove curling before feeding for a second time 1 1 ±0.5% 4. OthersTable 1-201 Standard Reproduction Ratios Operating environmentTable 1-202 Copying Speed B. Cassette Feeding Module-B2/Cassette Feeding Module-A2A. Exterior View III. NAMES OF PARTS1. Body B. Cross Sectionw Cassette 2. Cassette Feeding Module-A2q Cassette r Cassette 3 pick-up rollerA. Control Panel IV. OPERATION1-10 B. Operation Mode1-11 C. Making Two-Sided/Overlay Copies manualD. User Mode 1. Outline1-12 3. Changing the Auto Clear Time 2. Common Operations a. Keys to Use in User ModeChanging the Auto Power-Off Time b. OperationZoom Fine-Adjustment Reference1-14 1-15 Turning On and Off the Auto Cassette Change Mechanism1-16 Cleaning the Feeder with ADF installed-optionSelecting the Density Adjustment Method for Standard Mode 10. Initializing User Mode1-17 COPYRIGHT 1997 CANON INC 11. Quick Guide to User Mode1-18 CHAPTER 1 GENERAL DESCRIPTIONHandling the Toner Bottle VI. ROUTINE MAINTENANCE BY THE USERV. WARNINGS AND ACTIONS E. Handling the Toner BottleVII. IMAGE FORMATION A. Outline1-20 The NP6218 generates images in the following eight steps 1-21CANON NP6218 REV. 0 MAY. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 1-22CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT 1997 CANON INCCHAPTER BASIC OPERATION COPYRIGHT 1997 CANON INC I. BASIC CONSTRUCTIONA. Functional Construction CHAPTER 2 BASIC OPERATIONTransfer current B. Outline of the Electrical CircuitrySorter accessory +24VC. Basic Sequence of Operations 2 copies continuous, AE D. Main Motor Control Circuit 2. Mechanism1. Outline COPYRIGHT 1997 CANON INC E. Inputs to the DC Controller PCB1. Inputs to the DC Controller PCB 1/3 CHAPTER 2 BASIC OPERATION2. Inputs to the DC Controller PCB 2/3 CHAPTER 2 BASIC OPERATIONCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 3. Inputs to the DC Controller PCB 3/3CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCOPYRIGHT 1997 CANON INC F. Outputs from the DC Controller PCB1. Outputs from the DC Controller PCB 1/3 CHAPTER 2 BASIC OPERATION2. Outputs from the DC Controller PCB 2/3 CHAPTER 2 BASIC OPERATIONCOPYRIGHT 1997 CANON INC COPYRIGHT 1997 CANON INC 3. Outputs from the DC Controller PCB 3/32-10 CHAPTER 2 BASIC OPERATIONCHAPTER 2 BASIC OPERATION G. Inputs to and Outputs from the 1-Cassette Unit Driver PCB1. Inputs to and Outputs from the 1-Cassette Unit Driver PCB 1/1 2-11CHAPTER 2 BASIC OPERATION H. Inputs to and Outputs from the 2-Cassette Unit Driver PCB1. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 1/2 2-12COPYRIGHT 1997 CANON INC 2. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 2/22-13 CHAPTER 2 BASIC OPERATIONCANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 2-14CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCHAPTER EXPOSURE SYSTEM A. Outline I. BASIC OPERATIONII. LENS DRIVE SYSTEM A. Varying the Reproduction RatioCHAPTER 3 EXPOSURE SYSTEM COPYRIGHT 1997 CANON INCChange solenoid SL1 Lens motor M3 Lens cable B. Lens Motor Drive Circuit 1. Keeping the Lens Motor Stationary2. Driving the Lens Motor C. Basic Sequence of Operations lens drive system non-Direct III. SCANNING DRIVE SYSTEM A. Driving the Scanner1. Outline Scanner sensor 2. Relationship between the Scanner Sensor and Signals3. Basic Sequence of Operations scanner Referenceb. Mechanism 4. Driving the Scanner Motor a. OutlinePage IV. DISASSEMBLY AND ASSEMBLY A. Scanner Drive 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 3-15Hook Wirespring Wirespring3-16 3-17 6. Cleaning the Scanner No. 6 MirrorB. Lens Drive Assembly 1. Detaching the Lens Drive Motor3-18 6 Disconnect the two connectors y from the copier’s rear 3-19CHAPTER 3 EXPOSURE SYSTEM Figure 3-421 Lens Drive Assembly2. Routing the Lens Cable 3-203. Adjusting the Position of the Change Solenoid 3-21A B CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 3-22CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT 1997 CANON INCCHAPTER IMAGE FORMATION SYSTEM I. PROCESSES Composite Power Supply PCB DC controller PCBA. Outline COPYRIGHT 1997 CANON INC CHAPTER 4 IMAGE FORMATION SYSTEMCHAPTER 4 IMAGE FORMATION SYSTEM B. Basic Sequence of Operations image formation system1 AE only 2 half pre-heating control 3 full pre-heating control 4 ON pre-heating control1. 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 Reference 7. Fluorescent Lamp Automatic8. Fluorescent Lamp Protection Mechanism Correction Control ALVC controldrive circuit D. Controlling the Primary Charging Roller Bias4-10 1. Outline2. Turning On and Off the Primary Charging Roller Bias 3. Controlling the Primary Charging Roller Bias to a Constant Voltage4-11 4-12 c. Reference Bias ATVC b. Cleaning BiasE. Controlling the Transfer Roller Bias a. Transfer Biasturns on and off the transfer roller bias 4-145. Current Limiter Circuit transfer bias 6. Current Limiter Circuit cleaning bias2. Turning On and Off the Transfer Roller Bias 3. Controlling the Transfer Bias to a Constant VoltageF. Controlling the Static Eliminator Bias 4-161. Outline 2. Switching the Static Eliminator Bias Voltage Level 3. Ensuring Proper Separation of Thin Paper4-17 Blanking shutter home position sensor PS3 G. Controlling Blank Exposure4-18 1. Outline2. Blanking Whiting of Non-Image Areas for Reduction 3. Blanking Whiting Out the Leading/Trailing Edges and between Copies4-19 Fulcrum Fulcrum Cleaning pad H. Controlling the Primary Corona Roller Cleaning Mechanism2. Primary Charging Roller Cleaning Operation 4-20I. Releasing the Transfer Roller 4-211. Outline Toner container II. DEVELOPING ASSEMBLY AND CLEANING ASSEMBLY4-22 A. Outline4-23 B. Controlling the Toner Level Detectionq When the Level of Toner Is Adequate 4-24C. Controlling the Development Bias 4-251. Outline 4-26 3. Turning On and Off the AC Component of the Development Bias1. Outline D. Automatic Control of Copy Density2. Control Method 4-27COPYRIGHT 1997 CANON INC Figure 4-207 Area Read by the AE Sensor Reference4-28 CHAPTER 4 IMAGE FORMATION SYSTEMcopy density development bias slope adjustment No. 303 during AE mode 3. AE Adjustment4-29 lamp intensity automatic adjustment No. 301 during AE scans4-30 III. DISASSEMBLY AND ASSEMBLYA. Illumination Assembly 1. Detaching the Scanning Lamp/Fluorescent Lamp HeaterCOPYRIGHT 1997 CANON INC u yt4-31 CHAPTER 4 IMAGE FORMATION SYSTEM60mm 1~5mm60mm 4-324-33 Figure 4-306 front view3. Detaching the Blank Exposure Assembly 4-34Reference COPYRIGHT 1997 CANON INC 4. Detaching the Blank Exposure Lamp4-35 CHAPTER 4 IMAGE FORMATION SYSTEM4-36 5. Detaching the Blank Shutter Solenoid4-37 6. Positioning the Blank Shutter SolenoidFigure 4-314a Figure 4-314b7. Routing the Blanking Cable 8. Positioning the Left/Right Margin4-38 CHAPTER 4 IMAGE FORMATION SYSTEM B. Drum Unit1. Detaching the Drum Unit 4-394-40 2. CleaningC. Primary Corona Assembly 1. Detaching the 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 Roller4-44 D. Transfer Charging Assembly1. Detaching the Transfer Roller 2. Attaching the Drum Heater5 Detach the transfer roller and the static eliminator 4-45COPYRIGHT 1997 CANON INC 4-469 Connect the connector y as shown in Figure CHAPTER 4 IMAGE FORMATION SYSTEM4-47 1. Removing the Developing Assembly2. Removing the Blade Assembly E. Developing System4-48 3. Removing the Developing Cylinder Side SealCHAPTER 4 IMAGE FORMATION SYSTEM t r e y ei o !0 4-49CHAPTER 4 IMAGE FORMATION SYSTEM 4-506 Remove the screw !1, and remove the butting roll !2and roll case !3 7 Remove the developing cylinder !4COPYRIGHT 1997 CANON INC 4. Installing the Side Seal and the Blade Assembly4-51 CHAPTER 4 IMAGE FORMATION SYSTEMCOPYRIGHT 1997 CANON INC 4-523 Check that the side seal and the container are in firm contact CHAPTER 4 IMAGE FORMATION SYSTEMCHAPTER PICK-UP/FEEDING SYSTEM PS3cu I. PICK-UP/FEEDING SYSTEMA. Outline MultifeederSensor No A. Outline II. PICK-UP OPERATION COPIERCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON B. Sequence of Operations pick-up/feeding assembly A4, 2 copiesCHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT 1997 CANON INCA. Pick-Up Operation III. PICK-UP FROM THE CASSETTE FEEDING MODULE-A2STBY B. Sequence of Operations cassette 2 A4, 2 copiesCHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT 1997 CANON INCA. Outline IV. MULTIFEEDERReference B. Identifying the Size of Paper on the MultifeederCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON C. Sequence of Operations multifeeder A4, 2 copiesCHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT 1997 CANON INC5-10 V. IDENTIFYING THE CASSETTE SIZE5-11 ReferenceGuide plate horizontal Paper size lever Guide plate vertical 5-12 A. Pre-Registration Delay JamFigure 5-601 Pre-Registration Delay Jam Sequence VI. IDENTIFYING JAMSFigure 5-603 Pre-Registration Stationary Jam Sequence B. Pre-Registration Timing JamC. Pre-Registration Stationary Jam Figure 5-602 Pre-Registration Timing Jam SequenceFigure 5-605 Separation Stationary Jam Sequence D. Separation Delay JamFigure 5-604 Separation Delay Jam Sequence E. Separation Stationary JamFigure 5-607 Delivery Stationary Jam Sequence F. Delivery Delay JamFigure 5-606 Delivery Delay Jam Sequence G. Delivery Stationary Jam5-16 VII. DISASSEMBLY AND ASSEMBLYA. Pick-Up Assembly 1. Detaching the Pick-Up Roller Unit3 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 Roller3. Points to Note When Attaching the Pick-Up Roller 4. Detaching the Pick-Up Clutch5-20 COPYRIGHT 1997 CANON INC 5. Detaching the Separation Pad5-21 CHAPTER 5 PICK-UP/FEEDING SYSTEM6. Adjusting the Left/Right Registration a. Pick-Up from the Cassette5-22 CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Multifeeder Assembly1. Detaching the Multifeeder Assembly 5-23CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Detaching the Multifeeder Pick-Up Roller Unitq w e 5-245-25 3. Detaching the Multifeeder Pick-Up Roller5. Detaching the Separation Pad 4. Points to Keep Note When Attaching the Multifeeder Pick-Up Roller5-26 w on the collar is toward the rear5-27 6. Detaching the Multifeeder Drive Unit5-28 7. Detaching the Multifeeder Clutch5-29 8. Positioning the Multifeeder Assembly paper guide plate cam9. Adjusting the Left/Right Registration 10. Points to Note When Attaching the Multifeeder Assembly Rack Plate5-30 5-31 C. Registration Roller Assembly1. Detaching the Registration Clutch 2. Detaching the Upper Registration RollerCHAPTER 5 PICK-UP/FEEDING SYSTEM 5-32Take care not to misplace the springs front, rear 3 Lift the upper registration roller e to detach5-33 3. Detaching the Lower Registration RollerD. Feeding Assembly 1. Detaching the Feeding Belt5-34 CHAPTER 5 PICK-UP/FEEDING SYSTEM 5-355 Detach the static eliminator 6 Detach the feeding spacer t from the hook arrow3. Detaching the Pick-Up Clutch E. Cassette Feeding Module1. Detaching the Copier from the Cassette Feeding Module 2. Detaching/Attaching the Pick-Up RollerCHAPTER FIXING SYSTEM A. Outline I. BASIC OPERATIONSCOPYRIGHT 1997 CANON INC CHAPTER 6 FIXING SYSTEMB. Controlling the Fixing Heater Temperature CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON ReferenceCHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INCHTRD Supply power to heater C. Controlling the Supply Power for the Fixing Heater2. Thermal Fuse FU1 D. Detecting Overheating at the End of the Fixing HeaterE. Protection Mechanism 1. Thermistor TH1, TH2Fixing film F. Correcting Displacement of the Fixing Film1. Outline ReferenceNormal 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 Motor6-11 II. DISASSEMBLY AND ASSEMBLYA. Fixing Assembly 1. Construction1COPYRIGHT 1997 CANON INC 2. Detaching the Upper Fixing Unit6-12 CHAPTER 6 FIXING SYSTEM6-13 COPYRIGHT 1997 CANON INC er t6-14 CHAPTER 6 FIXING SYSTEMCHAPTER 6 FIXING SYSTEM y u ti o!0 6-15CHAPTER 6 FIXING SYSTEM 6-169 Pull out the fixing film !2toward the front 10 Detach the tension roller !3CHAPTER 6 FIXING SYSTEM 6-1711 Remove the screw !4, and detach the fixing film sensor !5 12 Remove the E-ring !6CHAPTER 6 FIXING SYSTEM 9 !8 !7@2 @1 6-1816 Remove the two screws @3, and detach the fixing film motor unit @4 6-194. Points to Note When Attaching the Fixing Film 5. Points to Note When Attaching the Heater Connector6-20 6-21 6. Points to Note When Replacing the Fixing Upper Unit7. Adjusting the Fixing Film Drive Roller Pressure Figure 6-220 rear viewThe copier enters fixing tension roller mode 6-226-23 8. Detaching the Lower Fixing Unit6-24 6-25 10. Adjusting the Lower Fixing Roller Nipa. Measuring the Nip 6-26Reference COPYRIGHT 1997 CANON INC B. Delivery Assembly6-27 CHAPTER 6 FIXING SYSTEMCANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 6-28CHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INCEXTERNALS/AUXILIARY MECHANISMS CHAPTERCOPYRIGHT 1997 CANON INC I. POWER SUPPLYA. Outline CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSReference B. Power Supply Circuit AssemblyCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INCCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 4. Overcurrent in the Low-voltage Power Supply C. Detecting Errors in the Power Supply PCB2. Error in the High-Voltage Output Data 3. Low-Voltage Output Data ErrorD. Protection Mechanisms for the Power Supply Circuit II. DISASSEMBLY AND ASSEMBLY A. External Coverscover CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INCCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 1. Detaching the Control Panel B. Control PanelC. Fans 1. Detaching the Exhaust Fan7-10 7-11 D. Main Motor/Main Drive Assembly2. Detaching the Main Drive Assembly 1. Detaching the Main Motor Unit9 Turn the pulley i clockwise, and detach the belt o 7-127-13 3. Routing the Drive BeltCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS E. Cassette unit1. Detaching the Pick-Up Drive Unit 7-147-15 r y r t t r2. Detaching the Cassette Motor q e w qCOPYRIGHT 1997 CANON INC 3. Detaching the Cassette Driver PCB7-16 CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS7-17 2. Points to Note When Replacing the DC Controller PCBF. DC Controller PCB 1. Detaching the DC Controller PCBG. Composite Power Supply PCB 1. Detaching the 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 PCBI. Intensity Sensor PCB 1. Points to Note When Replacing the AE Sensor1. Points to Note When Replacing the Intensity Sensor H. AE Sensor PCBCANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 7-22CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INCCHAPTER 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 Size8-11 A5 R A4R A4 8-12 III. RELOCATING THE COPIER 8-13Direct position refers to IV. REPLACING THE DRUM UNIT 8-14Go through the following when replacing the drum unit Step 8-15Step 8-168-17 V. INSTALLING THE CONTROL CARD IV NCHAPTER 8 INSTALLATION 8-1810 Disconnect the copier’s dummy connector r 11 Connect the connector t of the Control Card IV NCHAPTER 8 INSTALLATION VI. CASSETTE HEATER KIT 5 INSTALLATION PROCE- DUREA. Unpacking 8-198-20 B. Installation to a Cassette Feeding Module-A2/B2Screws 8-216 Close the cover 8-22Cassette Feeding Module-B2 8-23Copiers connector Molded member Copiers base plate CHAPTER 8 INSTALLATIONRelay harness 8-24CHAPTER 8 INSTALLATION 8-2512 Install the rear cover of the cassette pedestal and all covers 13 Install the copier’s rear covery *Not used u *Not used VII. INSTALLING THE REMOTE DIAGNOSTIC DEVICE8-26 A. Unpacking8-27 B. Installation to the Copier4 Connect the cable o on the copier side and the RDD’s cable 8-28COPYRIGHT 1997 CANON INC 8-29CHAPTER 8 INSTALLATION Modular Jack on the Right1. If the ROM IC6 !2 is not mounted, you need not mount it 8-30CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 8-31CHAPTER 8 INSTALLATION COPYRIGHT 1997 CANON INCLED1 LED2 LED3 8-32SW2-2 8-3311 Reset the RDD’s RAM SW2-112 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 PARTSII. DURABLES A. CopierLower fixing separation claw B. Cassette Feeding Module-B2/Cassette Feeding Module-A2 Perform work according to the number III. PERIODICAL SERVICINGIV. SERVICING CHART clean replace lubricate adjust inspector cleanDo not use solvents or oils other than those specified V. NOTES ON DRUM KIT Do NOT throw the drum kits into fire it can burst or explodeOtherwise, dispose of it as nonflammable material CHAPTER TROUBLESHOOTING 10-1 Guide to Troubleshooting TablesCANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 10-2CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCCOPYRIGHT 1997 CANON INC I MAINTENANCE AND INSPECTIONA. Image Adjustment Basic Procedure 10-3CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON B. Periodical Servicing10-4 COPYRIGHT 1997 CANON INCII. STANDARDS AND ADJUSTMENTS A. Image Adjustment10-5 10-6 Reference2.0±1.0mm 2.5± 1.5mm 10-710-8 4. Adjusting the Left/Right RegistrationShutter 5. Adjusting the Left/Right Margin No. 311 left/right margin10-9 Adjust the distance between the two shutters in the blanking assemblyReference 6. Adjusting the Scanning Lamp Intensity10-10 positioning10-11 7. AE AdjustmentFigure 10-210 DC Controller PCB 10-12VR391 2 Press 2 on the keypad The copier indicates ‘302’ 10-13causes the AE copies 10-14After adjustment with service mode causesB. Exposure System 1. Routing the Scanner Drive Cable10-15 10-16 Position B Longest pin 3. Adjusting the Scanner Cable Tension4. Assembling the Mirror Positioning Tool 10-1760mm 10-18CHAPTER 10 TROUBLESHOOTING 1~5mmFigure 10-220 front view 10-19Reference 10-20 6. Positioning the Change SolenoidFigure 10-223b C. Image Formation System1. Positioning the Blank Shutter Solenoid Figure 10-223aAttach the spring to the outside of the sides shutter 2. Routing the Blank Shutter Cable10-22 3. Positioning the Solenoid for the Primary Charging Roller4. After Replacing the Drum Unit 5. Attaching the Drum Heater10-23 9 Connect the connector y as shown in Figure 10-2410-25 D. Pick-Up/Feeding System1. Orientation of the Pick-Up Roller 2. Orientation of the Multifeeder Pick-Up Roller10-26 3. Positioning the Paper Guide Plate Cam multifeeder2. Points to Note When Attaching the Heater Connector E. Fixing System10-27 3. Adjusting the Fixing Film Drive Roller Pressure Figure 10-236 rear view10-28 10-29 4. Points to Note after Replacing the Fixing Upper Unit5. Adjusting the Nip 10-30Reference 6. Routing the Drive Belt 7. Storing the Fixing Heater Resistance10-31 8-1 When Replacing the Fixing Upper Unit 8. Setting the Fixing Heater Temperature Control ValueFigure 10-240 Heater Stay Side Plate rear 10-3210-33 Example10 Enter ‘4’ using the keypad, and set the copy count 10-3410-35 F. Electrical1. After Replacing the PCB 2. Clearing the Back-Up RAMReference 3. Checking the Photointerrupters10-36 Referenceby hand while 10-37Service mode a. CopierService mode 10-38b. Cassette Feeding Unit 10-39Name 10-40Name 10-41Name 10-42Reference 4. Adjusting the Multifeeder Paper Width Sensor10-43 Clear Clears settings5. Setting the Paper Size for the Universal Cassette 10-44Government-R 2. Checking the Originals III. TROUBLESHOOTING IMAGE FAULTSA. Initial Checks 1. Site Environment10-46 5. OthersCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON 10-47CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCCOPYRIGHT 1997 CANON INC B. SAMPLES OF IMAGE FAULTS10-48 CHAPTER 10 TROUBLESHOOTINGC. Troubleshooting Faulty Images 1. The copy is too light half-tone only10-49 2. The copy is too light black solid also 3. The copy is too light overall, extremely10-50 Cause 10-514. The copy has uneven density front too dark 5. The copy has uneven density front too light10-52 10-53 6. The copy is foggy overall10-54 7. The copy is foggy vertical8. The copy has black lines vertical thick fuzzy lines 9. The copy has black lines vertical, fine10. The copy has white spot vertical 11. The copy has white lines vertical10-55 10-56 12. The copy has white spots horizontal10-57 13. The back of the copy is soiled14. The copy has a fixing fault 15, 16, 17 The leading edge of the copy is displaced10-58 10-59 18. The copy has a blurred image19. The copy is foggy horizontal 10-60Developing assembly spacer 10-61 20. The copy has poor sharpness21. The copy is blank 22. The copy is solid black10-62 10-63 IV. TROUBLESHOOTING MALFUNCTIONSA. Troubleshooting Malfunctions E000E001 E002, E00310-64 E004 E00710-65 E010 E03010-66 E064 9. E202 keys on control panel invalidated10-67 10-68 10. E21011. E220 12. E24010-69 13. E26114. E710, E711, E712, E717 15. E80310-70 16. AC power supply is absentPin No 17. DC power supply is absent10-71 Connector18. The blank shutter fails to move 19. The photosensitive drum fails to rotate10-72 20. The pick-up operation fails from cassette 21. The pick-up operation from the multifeeder fails10-73 22. The scanner fails to move forward/in reverse 23. The registration roller fails to rotate10-74 24. The scanning lamp fails to turn on 25. The lens fails to move10-75 10-76 28. The add paper indicator fails to turn off26. The fixing heater fails to operate 27. The pre-exposure lamp fails to turn on10-77 29 The jam message fails to turn offV. TROUBLESHOOTING FEEDING PROBLEMS A. Jams copy paper10-78 10-79 1. Pick-Up Assembly2. Separation/Feeding Assembly Fixing/Delivery AssemblyDelivery 10-81 B. Feeding Faults1. Double feeding 2. WrinklingCHAPTER 10 TROUBLESHOOTING VI ARRANGEMENT/FUNCTIONS OF THE ELECTRICAL PARTSA. Sensors 10-8210-83 COPYRIGHT 1997 CANON INC B. Clutches, Solenoids, and Switches10-84 CHAPTER 10 TROUBLESHOOTING10-85 COPYRIGHT 1997 CANON INC C. Motors, Heaters, and Lamps10-86 CHAPTER 10 TROUBLESHOOTING10-87 COPYRIGHT 1997 CANON INC D. PCBs10-88 CHAPTER 10 TROUBLESHOOTINGName 10-89COPYRIGHT 1997 CANON INC E. Cassette Feeding Module - A210-90 CHAPTER 10 TROUBLESHOOTINGPhotointerrupter 10-91F. Variable Resistors VR and Check Pins by PCB 1. DC controller PCB10-92 COPYRIGHT 1997 CANON INC 2. Composite power supply PCB10-93 CHAPTER 10 TROUBLESHOOTING10-94 VII. SERVICE MODEB. Using Service Mode 1. Activating Service Mode6. Clearing Stored Error Code 2. Selecting a Service Mode4. Using Adjustment Mode 3 and Specification Mode 5. Using Operation/Inspection Mode10-96 7. Recording on the Service Mode Label10-97 C. Control Display ModeNo. 101 Jam Location Indicator 10-98To clear an item, press the Clear key D. I/O Mode10-99 Press 2 on the keypad and the AE key to activate I/O display mode10-100 LED copy count indicator from 201 toNo. 201/202/203/204 Port C Digital Display Port H Display 10-101right face in page separation timing E. Adjustment Mode10-102 Leading edge margin adjustment forDescription 10-103Description 10-10410-105 F. Operation/Inspection ModeDescription 10-10610-107 G. Specification Settings Mode10-108 H. Counter ModeVIII. SELF DIAGNOSIS A. Copier E000E001 E002E010 E003E004 E007E261 E210E220 E240Clearing an Error Code back-up data 10-112E411 E400E402 E404E510 C. Self Diagnosis sorter10-114 E500When an E code is indicated 10-115CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPON 10-116CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCAPPENDIX A4, 2 copies, Direct, from copier cassette A. GENERAL TIMING CHART1. Signals and Abbreviations B. SIGNALS AND ABBREVIATIONSC. GENERAL CIRCUIT DIAGRAM COPYRIGHT 1997 CANON INCCANON 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 Prepared by CANON INC Printed in Japan REVISION 0 MAY 19975-1, Hakusan 7-chome, Toride-shi, Ibaraki 302 Japan This publication is printed on 70% reprocessed paper PRINTED IN JAPAN IMPRIMÉ AU JAPON0797S0.7-2