Canon FY8-23AV-000 manual 2B PC400/FC200

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CHAPTER 2 STANDARDS AND ADJUSTMENTS

C (VR604)

Control panel PCB

C (R614)

Figure 2-2B (PC400/FC200)

b.After Replacing the Scanning Lamp Unit, Intensity Sensor, or AE Sensor

(Before Adjustment)

•If the scanning lamp has blackened, replace it.

•Clean the scanning system (lens array, lamp reflector, lamp).

1)Set the cartridge to the copier.

2)De-select AE, and set the copy density control lever/dial to the center.

3)Set the density correction switch (SW606) to the center (PC420/430/FC220).

4)Set the Test Sheet (NA3/NB3/NA2), and make a copy.

5)Check if the copy is free of fogging, and gray scale No. 9 (No. 10, if NB3) is somewhat visible.

•If too dark,

Turn VR604 on the control panel PCB clockwise slightly to increase the intensity.

•If too light,

Turn VR604 counterclockwise slightly to decrease the intensity.

6)Repeat steps 4) and 5) until the density is optimum.

Notes:

After adjusting the intensity, be sure to adjust the AE mechanism (PC420/430/FC220).

2-3

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Contents Service Handbook Copyright 1998 Canon INC Contents Troubleshooting Malfunctions Self Diagnosis Page Periodically Replaced Parts DurablesPeriodical Servicing 1D Temperature/Humidity Specifications Storing Sealed Cartridges2D Transportation Storing and Handling Unsealed Cartridges Reference Pre-Checks Image Adjustment Basic ProcedurePoints to Note Glass MechanicalElectrical Adjusting the Intensity VR6042B PC400/FC200 Adjusting the AE Mechanism VR602, VR603 JP607 JP605 JP604 Control panel PCB Screwdriver Standards and Adjustments Making Initial Checks Site EnvironmentChecking the Documents Checking the Copy Paper Checking the Feeding AssemblyChecking the Lens Array for Dirt Checking the Transfer Charging RollerImage 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 a blurred image Copy is foggy cross feed directionCopy has poor sharpness focus 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 rotatePaper feeding normally At time of jamFixing heater fails to operate Copy Paper Jams Separation/Feeding Assembly Pick-Up AssemblyFixing/Delivery Assembly Feeding Faults Double FeedingWrinkles 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

FY8-23AV-000 specifications

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