Canon FY8-23AV-000 manual JP607 JP605 JP604 Control panel PCB Screwdriver

Page 17

CHAPTER 2 STANDARDS AND ADJUSTMENTS

JP607 JP605 JP604

Control panel PCB

Screwdriver

Figure 2-4B

6)While keeping the condition in step 5), switch the copier ON.

• ‘0’ is displayed, the scanning lamp goes ON, and the main motor starts to rotate.

7)Stop shorting the jumper wires.

8)Set the digital multimeter to the 20V DC range, and turn VR602 (AE offset adjustment) until the voltage between the anode side of the diode (D606; +) and JP607 (GND) is 4.0 ±0.1 V.

Notes:

You must use a Digital Multimeter when making adjustments in steps 8) and 10).

VR602

VR603

JP607

D606 (anode side) Control panel PCB

Figure 2-5B

2-5

Image 17

Contents Service Handbook Copyright 1998 Canon INC Contents Troubleshooting Malfunctions Self Diagnosis Page Periodical Servicing Periodically Replaced PartsDurables 2D Transportation 1D Temperature/Humidity SpecificationsStoring Sealed Cartridges Storing and Handling Unsealed Cartridges Reference Pre-Checks Image Adjustment Basic ProcedurePoints to Note Glass Mechanical Electrical Adjusting the Intensity VR6042B PC400/FC200 Adjusting the AE Mechanism VR602, VR603 JP607 JP605 JP604 Control panel PCB Screwdriver Standards and Adjustments Checking the Documents Making Initial ChecksSite Environment Checking the Lens Array for Dirt Checking the Feeding AssemblyChecking the Transfer Charging Roller Checking the Copy PaperImage Troubleshooting Others Image Troubleshooting Samples of Image Faults YES Troubleshooting by Image FaultCopy is foggy overall Back Replace the cartridge Is the problem corrected? Back of the copy is soiled Copy has white spots cross feed directionCopy has faulty fixing Copy has poor sharpness focus Copy has a blurred imageCopy is foggy cross feed direction Copy is solid black Copy is blankImage Troubleshooting Self diagnosis PC400/FC200 Troubleshooting MalfunctionsCopyboard Does the copying operation start AC power is absent Scanning lamp fails to go on Pick-up failsCopyboard fails to move Main motor fails to rotateFixing heater fails to operate Paper feeding normallyAt time of jam Copy Paper Jams Separation/Feeding Assembly Pick-Up AssemblyFixing/Delivery Assembly Wrinkles Feeding FaultsDouble Feeding Sensors and Solenoids Arrangement and Functions of Electrical PartsSwitches Lamp, Heater, Motor, and Others Printed Circuit Board PCB DC Controller/DC Power Supply PCB Variable Resistors VR and Check Pins by PCBPC400/FC200 Control Panel PCBSelf Diagnosis Self Diagnosis General Timing Chart PC420/430/FC220 General Timing Chart A4, 2 copies Signals Signals/Abbreviations ListAbbreviations General Circuit Diagram PC420/430/FC220 General Circuit Diagram Special Tools Table Solvents/Oils Table LTR/A4 LGL SpecificationsNVD Prepared by This publication is printed on 70% reprocessed paper