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Canon NP6218, FY8-13EX-000 service manual F. Controlling the Static Eliminator Bias, 4-16, Outline

Models: FY8-13EX-000 NP6218

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CHAPTER 4 IMAGE FORMATION SYSTEM

F. Controlling the Static Eliminator Bias

1. Outline

Figure 4-114 shows the circuit that controls the static eliminator bias; the circuit has the following functions:

•turns on and off the static eliminator bias and controls the voltage to a constant level

•switches the static eliminator bias voltage level

Composite power supply PCB
Main transformer
T101
		Static eliminator
		bias drive
			circuit	Transformer
				Transformer
				circuit
	JLVCTL		JCTL
Transformer
(T101)		Microprocessor
drive circuit		Microprocessor
drive circuit		(Q512)
	MPWM	(Q512)
	MPWM
			J211
		J302	11~15
		J301	J210
			1~6

DC controller PCB

Microprocessor

(Q301)

Photosensitive drum

Static eliminator

Figure 4-114

4-16

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

Page 92

Image 92

Canon NP6218, FY8-13EX-000 service manual F. Controlling the Static Eliminator Bias, 4-16, Outline

Contents

SERVICE MANUAL FY8-13EX-000REVISION COPYRIGHT 1997 CANON INCCOPYRIGHT 1997 CANON INC Printed in Japan Imprimé au Japon CANON INCINTRODUCTION and consumables/durables and scheduled servicing charts System Configuration CANON NP6218 REV.0 MAR. 1997 PRINTED IN JAPAN IMPRIMÉ AU JAPON 1. GENERAL DESCRIPTIONCOPYRIGHT 1997 CANON INC CONTENTS CHAPTER 1 GENERAL DESCRIPTIONCHAPTER 2 BASIC OPERATION CHAPTER 3 EXPOSURE SYSTEM CHAPTER 4 IMAGE FORMATION SYSTEMCHAPTER 5 PICK-UP/FEEDING SYSTEM CHAPTER 6 FIXING SYSTEM viiiCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS CHAPTER 8 INSTALLATIONCHAPTER 9 MAINTENANCE AND SERVICING CHAPTER 10 TROUBLESHOOTING 10.The copy has white spot APPENDIX CHAPTER GENERAL DESCRIPTION CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONI. FEATURES 4. Practical basic features1. Multiple front loading and multifeeder for space saving 2. Office amenities and ecologyII. SPECIFICATIONS A. Copier1. Type 2. System2. Remove curling before feeding for a second time 3. Features1. Use Canon-recommended paper 4. Others Table 1-201 Standard Reproduction RatiosOperating environment 1 1 ±0.5%B. Cassette Feeding Module-B2/Cassette Feeding Module-A2 Table 1-202 Copying SpeedIII. NAMES OF PARTS A. Exterior ViewB. Cross Section 1. Body2. Cassette Feeding Module-A2 q Cassetter Cassette 3 pick-up roller w CassetteIV. OPERATION A. Control PanelB. Operation Mode 1-10C. Making Two-Sided/Overlay Copies manual 1-111-12 D. User Mode1. Outline Changing the Auto Power-Off Time 2. Common Operations a. Keys to Use in User Modeb. Operation 3. Changing the Auto Clear Time1-14 Zoom Fine-AdjustmentReference Turning On and Off the Auto Cassette Change Mechanism 1-15Cleaning the Feeder with ADF installed-option 1-161-17 Selecting the Density Adjustment Method for Standard Mode10. Initializing User Mode 11. Quick Guide to User Mode 1-18CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT 1997 CANON INCVI. ROUTINE MAINTENANCE BY THE USER V. WARNINGS AND ACTIONSE. Handling the Toner Bottle Handling the Toner Bottle1-20 VII. IMAGE FORMATIONA. Outline 1-21 The NP6218 generates images in the following eight steps1-22 CHAPTER 1 GENERAL DESCRIPTIONCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER BASIC OPERATION I. BASIC CONSTRUCTION A. Functional ConstructionCHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCB. Outline of the Electrical Circuitry Sorter accessory+24V Transfer currentC. Basic Sequence of Operations 2 copies continuous, AE 1. Outline D. Main Motor Control Circuit2. Mechanism E. Inputs to the DC Controller PCB 1. Inputs to the DC Controller PCB 1/3CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCOPYRIGHT 1997 CANON INC 2. Inputs to the DC Controller PCB 2/3CHAPTER 2 BASIC OPERATION 3. Inputs to the DC Controller PCB 3/3 CHAPTER 2 BASIC OPERATIONCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONF. Outputs from the DC Controller PCB 1. Outputs from the DC Controller PCB 1/3CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCCOPYRIGHT 1997 CANON INC 2. Outputs from the DC Controller PCB 2/3CHAPTER 2 BASIC OPERATION 3. Outputs from the DC Controller PCB 3/3 2-10CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INCG. Inputs to and Outputs from the 1-Cassette Unit Driver PCB 1. Inputs to and Outputs from the 1-Cassette Unit Driver PCB 1/12-11 CHAPTER 2 BASIC OPERATIONH. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 1. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 1/22-12 CHAPTER 2 BASIC OPERATION2. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 2/2 2-13CHAPTER 2 BASIC OPERATION COPYRIGHT 1997 CANON INC2-14 CHAPTER 2 BASIC OPERATIONCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER EXPOSURE SYSTEM I. BASIC OPERATION II. LENS DRIVE SYSTEMA. Varying the Reproduction Ratio A. OutlineChange solenoid SL1 Lens motor M3 Lens cable CHAPTER 3 EXPOSURE SYSTEMCOPYRIGHT 1997 CANON INC 2. Driving the Lens Motor B. Lens Motor Drive Circuit1. Keeping the Lens Motor Stationary C. Basic Sequence of Operations lens drive system non-Direct 1. Outline III. SCANNING DRIVE SYSTEMA. Driving the Scanner 2. Relationship between the Scanner Sensor and Signals 3. Basic Sequence of Operations scannerReference Scanner sensor4. Driving the Scanner Motor a. Outline b. MechanismPage 1. Detaching the Scanner Drive Motor IV. DISASSEMBLY AND ASSEMBLYA. Scanner Drive Assembly 2. Detaching the Scanner Cable 3-103-11 front3. Assembling the Mirror Position Tool 3-124. Routing the Scanner Cable 3-133-14 5 Tighten the screw loosened in e, and fix the cable to the left stay3-15 Hook WirespringWirespring Hook3-16 6. Cleaning the Scanner No. 6 Mirror 3-173-18 B. Lens Drive Assembly1. Detaching the Lens Drive Motor 3-19 6 Disconnect the two connectors y from the copier’s rearFigure 3-421 Lens Drive Assembly 2. Routing the Lens Cable3-20 CHAPTER 3 EXPOSURE SYSTEMA B 3. Adjusting the Position of the Change Solenoid3-21 3-22 CHAPTER 3 EXPOSURE SYSTEMCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER IMAGE FORMATION SYSTEM A. Outline I. PROCESSESComposite Power Supply PCB DC controller PCB CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INCB. Basic Sequence of Operations image formation system 1 AE only 2 half pre-heating control 3 full pre-heating control4 ON pre-heating control CHAPTER 4 IMAGE FORMATION SYSTEMC. Controlling the Scanning Lamp 1. Outline2. Turning On and Off the Scanning Lamp 3. Pre-Heating Control 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 7. Fluorescent Lamp Automatic 8. Fluorescent Lamp Protection MechanismCorrection Control ALVC control ReferenceD. Controlling the Primary Charging Roller Bias 4-101. Outline drive circuit4-11 2. Turning On and Off the Primary Charging Roller Bias3. Controlling the Primary Charging Roller Bias to a Constant Voltage 4-12 b. Cleaning Bias E. Controlling the Transfer Roller Biasa. Transfer Bias c. Reference Bias ATVC4-14 turns on and off the transfer roller bias6. Current Limiter Circuit cleaning bias 2. Turning On and Off the Transfer Roller Bias3. Controlling the Transfer Bias to a Constant Voltage 5. Current Limiter Circuit transfer bias1. Outline F. Controlling the Static Eliminator Bias4-16 4-17 2. Switching the Static Eliminator Bias Voltage Level3. Ensuring Proper Separation of Thin Paper G. Controlling Blank Exposure 4-181. Outline Blanking shutter home position sensor PS34-19 2. Blanking Whiting of Non-Image Areas for Reduction3. Blanking Whiting Out the Leading/Trailing Edges and between Copies H. Controlling the Primary Corona Roller Cleaning Mechanism 2. Primary Charging Roller Cleaning Operation4-20 Fulcrum Fulcrum Cleaning pad1. Outline I. Releasing the Transfer Roller4-21 II. DEVELOPING ASSEMBLY AND CLEANING ASSEMBLY 4-22A. Outline Toner containerB. Controlling the Toner Level Detection 4-234-24 q When the Level of Toner Is Adequate1. Outline C. Controlling the Development Bias4-25 3. Turning On and Off the AC Component of the Development Bias 4-26D. Automatic Control of Copy Density 2. Control Method4-27 1. OutlineFigure 4-207 Area Read by the AE Sensor Reference 4-28CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC3. AE Adjustment 4-29lamp intensity automatic adjustment No. 301 during AE scans copy density development bias slope adjustment No. 303 during AE modeIII. DISASSEMBLY AND ASSEMBLY A. Illumination Assembly1. Detaching the Scanning Lamp/Fluorescent Lamp Heater 4-30u yt 4-31CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC1~5mm 60mm4-32 60mmFigure 4-306 front view 4-33Reference 3. Detaching the Blank Exposure Assembly4-34 4. Detaching the Blank Exposure Lamp 4-35CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC5. Detaching the Blank Shutter Solenoid 4-366. Positioning the Blank Shutter Solenoid Figure 4-314aFigure 4-314b 4-374-38 7. Routing the Blanking Cable8. Positioning the Left/Right Margin B. Drum Unit 1. Detaching the Drum Unit4-39 CHAPTER 4 IMAGE FORMATION SYSTEM2. Cleaning 4-404-41 C. Primary Corona Assembly1. Detaching the Primary Corona Assembly 2. Cleaning the Cleaning Pad and the Primary Corona Roller 4-423. Positioning the Solenoid for the Primary Charging Roller 4-43D. Transfer Charging Assembly 1. Detaching the Transfer Roller2. Attaching the Drum Heater 4-444-45 5 Detach the transfer roller and the static eliminator4-46 9 Connect the connector y as shown in FigureCHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC1. Removing the Developing Assembly 2. Removing the Blade AssemblyE. Developing System 4-473. Removing the Developing Cylinder Side Seal 4-48t r e y e i o !04-49 CHAPTER 4 IMAGE FORMATION SYSTEM4-50 6 Remove the screw !1, and remove the butting roll !2and roll case !37 Remove the developing cylinder !4 CHAPTER 4 IMAGE FORMATION SYSTEM4. Installing the Side Seal and the Blade Assembly 4-51CHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INC4-52 3 Check that the side seal and the container are in firm contactCHAPTER 4 IMAGE FORMATION SYSTEM COPYRIGHT 1997 CANON INCCHAPTER PICK-UP/FEEDING SYSTEM I. PICK-UP/FEEDING SYSTEM A. OutlineMultifeeder PS3cuSensor No II. PICK-UP OPERATION COPIER A. OutlineB. Sequence of Operations pick-up/feeding assembly A4, 2 copies CHAPTER 5 PICK-UP/FEEDING SYSTEMCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONIII. PICK-UP FROM THE CASSETTE FEEDING MODULE-A2 A. Pick-Up OperationB. Sequence of Operations cassette 2 A4, 2 copies CHAPTER 5 PICK-UP/FEEDING SYSTEMCOPYRIGHT 1997 CANON INC STBYIV. MULTIFEEDER A. OutlineB. Identifying the Size of Paper on the Multifeeder ReferenceC. Sequence of Operations multifeeder A4, 2 copies CHAPTER 5 PICK-UP/FEEDING SYSTEMCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONV. IDENTIFYING THE CASSETTE SIZE 5-10Guide plate horizontal Paper size lever Guide plate vertical 5-11Reference VI. IDENTIFYING JAMS A. Pre-Registration Delay JamFigure 5-601 Pre-Registration Delay Jam Sequence 5-12B. Pre-Registration Timing Jam C. Pre-Registration Stationary JamFigure 5-602 Pre-Registration Timing Jam Sequence Figure 5-603 Pre-Registration Stationary Jam SequenceD. Separation Delay Jam E. Separation Stationary JamFigure 5-604 Separation Delay Jam Sequence Figure 5-605 Separation Stationary Jam SequenceF. Delivery Delay Jam G. Delivery Stationary JamFigure 5-606 Delivery Delay Jam Sequence Figure 5-607 Delivery Stationary Jam SequenceVII. DISASSEMBLY AND ASSEMBLY A. Pick-Up Assembly1. Detaching the Pick-Up Roller Unit 5-165-17 3 Open the lower right cover5-18 6 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 copier2. Detaching the Pick-Up Roller 5-195-20 3. Points to Note When Attaching the Pick-Up Roller4. Detaching the Pick-Up Clutch 5. Detaching the Separation Pad 5-21CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT 1997 CANON INC5-22 6. Adjusting the Left/Right Registrationa. Pick-Up from the Cassette B. Multifeeder Assembly 1. Detaching the Multifeeder Assembly5-23 CHAPTER 5 PICK-UP/FEEDING SYSTEM2. Detaching the Multifeeder Pick-Up Roller Unit q w e5-24 CHAPTER 5 PICK-UP/FEEDING SYSTEM3. Detaching the Multifeeder Pick-Up Roller 5-254. Points to Keep Note When Attaching the Multifeeder Pick-Up Roller 5-26w on the collar is toward the rear 5. Detaching the Separation Pad6. Detaching the Multifeeder Drive Unit 5-277. Detaching the Multifeeder Clutch 5-288. Positioning the Multifeeder Assembly paper guide plate cam 5-295-30 9. Adjusting the Left/Right Registration10. Points to Note When Attaching the Multifeeder Assembly Rack Plate C. Registration Roller Assembly 1. Detaching the Registration Clutch2. Detaching the Upper Registration Roller 5-315-32 Take care not to misplace the springs front, rear3 Lift the upper registration roller e to detach CHAPTER 5 PICK-UP/FEEDING SYSTEM3. Detaching the Lower Registration Roller 5-335-34 D. Feeding Assembly1. Detaching the Feeding Belt 5-35 5 Detach the static eliminator6 Detach the feeding spacer t from the hook arrow CHAPTER 5 PICK-UP/FEEDING SYSTEME. Cassette Feeding Module 1. Detaching the Copier from the Cassette Feeding Module2. Detaching/Attaching the Pick-Up Roller 3. Detaching the Pick-Up ClutchCHAPTER FIXING SYSTEM I. BASIC OPERATIONS A. OutlineCHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INCB. Controlling the Fixing Heater Temperature Reference CHAPTER 6 FIXING SYSTEMCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONC. Controlling the Supply Power for the Fixing Heater HTRD Supply power to heaterD. Detecting Overheating at the End of the Fixing Heater E. Protection Mechanism1. Thermistor TH1, TH2 2. Thermal Fuse FU1F. Correcting Displacement of the Fixing Film 1. OutlineReference Fixing filmunit mm Fixing film rear front Tension roller OFF Drive roller ON Normal ON OFF rear ON OFF ON front OFFdisplacement to the rear displacement to the front Fixing belt motor M4 Tension roller rear view2. Controlling the Fixing Film Motor 6-10II. DISASSEMBLY AND ASSEMBLY A. Fixing Assembly1. Construction1 6-112. Detaching the Upper Fixing Unit 6-12CHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INC6-13 er t 6-14CHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INCy u t i o!06-15 CHAPTER 6 FIXING SYSTEM6-16 9 Pull out the fixing film !2toward the front10 Detach the tension roller !3 CHAPTER 6 FIXING SYSTEM6-17 11 Remove the screw !4, and detach the fixing film sensor !512 Remove the E-ring !6 CHAPTER 6 FIXING SYSTEM9 !8 !7 @2 @16-18 CHAPTER 6 FIXING SYSTEM6-19 16 Remove the two screws @3, and detach the fixing film motor unit @46-20 4. Points to Note When Attaching the Fixing Film5. Points to Note When Attaching the Heater Connector 6. Points to Note When Replacing the Fixing Upper Unit 7. Adjusting the Fixing Film Drive Roller PressureFigure 6-220 rear view 6-216-22 The copier enters fixing tension roller mode8. Detaching the Lower Fixing Unit 6-236-24 10. Adjusting the Lower Fixing Roller Nip 6-25Reference a. Measuring the Nip6-26 B. Delivery Assembly 6-27CHAPTER 6 FIXING SYSTEM COPYRIGHT 1997 CANON INC6-28 CHAPTER 6 FIXING SYSTEMCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER EXTERNALS/AUXILIARY MECHANISMSI. POWER SUPPLY A. OutlineCHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INCB. Power Supply Circuit Assembly ReferenceCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSCOPYRIGHT 1997 CANON INC C. Detecting Errors in the Power Supply PCB 2. Error in the High-Voltage Output Data3. Low-Voltage Output Data Error 4. Overcurrent in the Low-voltage Power SupplyD. Protection Mechanisms for the Power Supply Circuit A. External Covers II. DISASSEMBLY AND ASSEMBLYcover CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSCOPYRIGHT 1997 CANON INC B. Control Panel 1. Detaching the Control Panel7-10 C. Fans1. Detaching the Exhaust Fan D. Main Motor/Main Drive Assembly 2. Detaching the Main Drive Assembly1. Detaching the Main Motor Unit 7-117-12 9 Turn the pulley i clockwise, and detach the belt o3. Routing the Drive Belt 7-13E. Cassette unit 1. Detaching the Pick-Up Drive Unit7-14 CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSr y r t t r 2. Detaching the Cassette Motorq e w q 7-153. Detaching the Cassette Driver PCB 7-16CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS COPYRIGHT 1997 CANON INC2. Points to Note When Replacing the DC Controller PCB F. DC Controller PCB1. Detaching the DC Controller PCB 7-177-18 G. Composite Power Supply PCB1. Detaching the Composite Power Supply PCB 7-19 6 Remove the three screws !0, and detach the power cord mount !12. Points to Note When Handling the Composite Power Supply PCB 7-201. Points to Note When Replacing the AE Sensor 1. Points to Note When Replacing the Intensity SensorH. AE Sensor PCB I. Intensity Sensor PCB7-22 CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMSCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONCHAPTER INSTALLATION I. SELECTING THE SITE II. UNPACKING AND INSTALLING THE COPIER A. Unpacking and Removing FixingsStep Step B. Turning On the Copier Step Step C. Checking the Images and Operations D. Attaching the Drum Unit Check/RemarksE. Changing the Cassette Size 8-10R A4 8-11A5 R A4 8-12 Direct position refers to III. RELOCATING THE COPIER8-13 Go through the following when replacing the drum unit IV. REPLACING THE DRUM UNIT8-14 8-15 Step8-16 StepV. INSTALLING THE CONTROL CARD IV N 8-178-18 10 Disconnect the copier’s dummy connector r11 Connect the connector t of the Control Card IV N CHAPTER 8 INSTALLATIONVI. CASSETTE HEATER KIT 5 INSTALLATION PROCE- DURE A. Unpacking8-19 CHAPTER 8 INSTALLATIONB. Installation to a Cassette Feeding Module-A2/B2 8-208-21 Screws8-22 6 Close the cover8-23 Copiers connector Molded member Copiers base plateCHAPTER 8 INSTALLATION Cassette Feeding Module-B28-24 Relay harness8-25 12 Install the rear cover of the cassette pedestal and all covers13 Install the copier’s rear cover CHAPTER 8 INSTALLATIONVII. INSTALLING THE REMOTE DIAGNOSTIC DEVICE 8-26A. Unpacking y *Not used u *Not usedB. Installation to the Copier 8-278-28 4 Connect the cable o on the copier side and the RDD’s cable8-29 CHAPTER 8 INSTALLATIONModular Jack on the Right COPYRIGHT 1997 CANON INC8-30 1. If the ROM IC6 !2 is not mounted, you need not mount it8-31 CHAPTER 8 INSTALLATIONCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON8-32 LED1 LED2 LED38-33 11 Reset the RDD’s RAMSW2-1 SW2-28-34 12 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 reset8-35 13 Shift bit 6 of the DIP switch 2 !9on the RDD’s PCB to OFF8-36 service station8-37 normally8-38 w @7 q wCHAPTER MAINTENANCE AND SERVICING I. PERIODICALLY REPLACED PARTS A. Periodically Replaced PartsLower fixing separation claw II. DURABLESA. Copier B. Cassette Feeding Module-B2/Cassette Feeding Module-A2 III. PERIODICAL SERVICING Perform work according to the numberDo not use solvents or oils other than those specified IV. SERVICING CHARTclean replace lubricate adjust inspector clean Otherwise, dispose of it as nonflammable material V. NOTES ON DRUM KITDo NOT throw the drum kits into fire it can burst or explode CHAPTER TROUBLESHOOTING Guide to Troubleshooting Tables 10-110-2 CHAPTER 10 TROUBLESHOOTINGCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONI MAINTENANCE AND INSPECTION A. Image Adjustment Basic Procedure10-3 COPYRIGHT 1997 CANON INCB. Periodical Servicing 10-4COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON10-5 II. STANDARDS AND ADJUSTMENTSA. Image Adjustment 2.0±1.0mm 10-6Reference 10-7 2.5± 1.5mm4. Adjusting the Left/Right Registration 10-85. Adjusting the Left/Right Margin No. 311 left/right margin 10-9Adjust the distance between the two shutters in the blanking assembly Shutter6. Adjusting the Scanning Lamp Intensity 10-10positioning Reference7. AE Adjustment 10-11VR391 Figure 10-210 DC Controller PCB10-12 10-13 2 Press 2 on the keypad The copier indicates ‘302’10-14 After adjustment withservice mode causes causes the AE copies10-15 B. Exposure System1. Routing the Scanner Drive Cable 10-16 3. Adjusting the Scanner Cable Tension 4. Assembling the Mirror Positioning Tool10-17 Position B Longest pin10-18 CHAPTER 10 TROUBLESHOOTING1~5mm 60mmReference Figure 10-220 front view10-19 6. Positioning the Change Solenoid 10-20C. Image Formation System 1. Positioning the Blank Shutter SolenoidFigure 10-223a Figure 10-223b2. Routing the Blank Shutter Cable 10-223. Positioning the Solenoid for the Primary Charging Roller Attach the spring to the outside of the sides shutter10-23 4. After Replacing the Drum Unit5. Attaching the Drum Heater 10-24 9 Connect the connector y as shown in FigureD. Pick-Up/Feeding System 1. Orientation of the Pick-Up Roller2. Orientation of the Multifeeder Pick-Up Roller 10-253. Positioning the Paper Guide Plate Cam multifeeder 10-2610-27 2. Points to Note When Attaching the Heater ConnectorE. Fixing System 10-28 3. Adjusting the Fixing Film Drive Roller PressureFigure 10-236 rear view 4. Points to Note after Replacing the Fixing Upper Unit 10-29Reference 5. Adjusting the Nip10-30 10-31 6. Routing the Drive Belt7. Storing the Fixing Heater Resistance 8. Setting the Fixing Heater Temperature Control Value Figure 10-240 Heater Stay Side Plate rear10-32 8-1 When Replacing the Fixing Upper UnitExample 10-3310-34 10 Enter ‘4’ using the keypad, and set the copy countF. Electrical 1. After Replacing the PCB2. Clearing the Back-Up RAM 10-353. Checking the Photointerrupters 10-36Reference Reference10-37 Service modea. Copier by hand while10-38 Service mode10-39 b. Cassette Feeding Unit10-40 Name10-41 Name10-42 Name4. Adjusting the Multifeeder Paper Width Sensor 10-43Clear Clears settings ReferenceGovernment-R 5. Setting the Paper Size for the Universal Cassette10-44 III. TROUBLESHOOTING IMAGE FAULTS A. Initial Checks1. Site Environment 2. Checking the Originals5. Others 10-4610-47 CHAPTER 10 TROUBLESHOOTINGCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPONB. SAMPLES OF IMAGE FAULTS 10-48CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-49 C. Troubleshooting Faulty Images1. The copy is too light half-tone only 10-50 2. The copy is too light black solid also3. The copy is too light overall, extremely 10-51 Cause10-52 4. The copy has uneven density front too dark5. The copy has uneven density front too light 6. The copy is foggy overall 10-537. The copy is foggy vertical 8. The copy has black lines vertical thick fuzzy lines9. The copy has black lines vertical, fine 10-5410-55 10. The copy has white spot vertical11. The copy has white lines vertical 12. The copy has white spots horizontal 10-5613. The back of the copy is soiled 10-5710-58 14. The copy has a fixing fault15, 16, 17 The leading edge of the copy is displaced 18. The copy has a blurred image 10-59Developing assembly spacer 19. The copy is foggy horizontal10-60 20. The copy has poor sharpness 10-6110-62 21. The copy is blank22. The copy is solid black IV. TROUBLESHOOTING MALFUNCTIONS A. Troubleshooting MalfunctionsE000 10-6310-64 E001E002, E003 10-65 E004E007 10-66 E010E030 10-67 E0649. E202 keys on control panel invalidated 10. E210 11. E22012. E240 10-6813. E261 14. E710, E711, E712, E71715. E803 10-6916. AC power supply is absent 10-7017. DC power supply is absent 10-71Connector Pin No10-72 18. The blank shutter fails to move19. The photosensitive drum fails to rotate 10-73 20. The pick-up operation fails from cassette21. The pick-up operation from the multifeeder fails 10-74 22. The scanner fails to move forward/in reverse23. The registration roller fails to rotate 10-75 24. The scanning lamp fails to turn on25. The lens fails to move 28. The add paper indicator fails to turn off 26. The fixing heater fails to operate27. The pre-exposure lamp fails to turn on 10-7629 The jam message fails to turn off 10-7710-78 V. TROUBLESHOOTING FEEDING PROBLEMSA. Jams copy paper 1. Pick-Up Assembly 10-79Delivery 2. Separation/Feeding AssemblyFixing/Delivery Assembly B. Feeding Faults 1. Double feeding2. Wrinkling 10-81VI ARRANGEMENT/FUNCTIONS OF THE ELECTRICAL PARTS A. Sensors10-82 CHAPTER 10 TROUBLESHOOTING10-83 B. Clutches, Solenoids, and Switches 10-84CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-85 C. Motors, Heaters, and Lamps 10-86CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-87 D. PCBs 10-88CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-89 NameE. Cassette Feeding Module - A2 10-90CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INC10-91 Photointerrupter10-92 F. Variable Resistors VR and Check Pins by PCB1. DC controller PCB 2. Composite power supply PCB 10-93CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1997 CANON INCVII. SERVICE MODE B. Using Service Mode1. Activating Service Mode 10-942. Selecting a Service Mode 4. Using Adjustment Mode 3 and Specification Mode5. Using Operation/Inspection Mode 6. Clearing Stored Error Code7. Recording on the Service Mode Label 10-96C. Control Display Mode 10-9710-98 No. 101 Jam Location IndicatorD. I/O Mode 10-99Press 2 on the keypad and the AE key to activate I/O display mode To clear an item, press the Clear keyNo. 201/202/203/204 Port C Digital Display 10-100LED copy count indicator from 201 to 10-101 Port H DisplayE. Adjustment Mode 10-102Leading edge margin adjustment for right face in page separation timing10-103 Description10-104 DescriptionF. Operation/Inspection Mode 10-10510-106 DescriptionG. Specification Settings Mode 10-107H. Counter Mode 10-108E000 E001E002 VIII. SELF DIAGNOSIS A. CopierE003 E004E007 E010E210 E220E240 E26110-112 Clearing an Error Code back-up dataE400 E402E404 E411C. Self Diagnosis sorter 10-114E500 E51010-115 When an E code is indicated10-116 CHAPTER 10 TROUBLESHOOTINGCOPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPONAPPENDIX A. GENERAL TIMING CHART A4, 2 copies, Direct, from copier cassetteB. SIGNALS AND ABBREVIATIONS 1. Signals and AbbreviationsCANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN IMPRIME AU JAPON C. GENERAL CIRCUIT DIAGRAMCOPYRIGHT 1997 CANON INC COPYRIGHT 1997 CANON INC CANON NP6218 REV. 0 MAR. 1997 PRINTED IN JAPAN IMPRIME AU JAPOND. SPECIAL TOOLS E. SOLVENTS/OILS 5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302 Japan Prepared byCANON INC Printed in Japan REVISION 0 MAY 1997 0797S0.7-2 This publication is printed on 70% reprocessed paperPRINTED IN JAPAN IMPRIMÉ AU JAPON