Canon FY8-23AV-000 manual Control Panel PCB, PC400/FC200

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CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS

2. Control Panel PCB

a.PC420/430/FC220

	1	1
	J603	1
	J603	J621
	5	4

VR602 VR603 VR604

7	J611
7	1
J601	1
21	1
22	2

b.PC400/FC200

Figure 6-2E

J621 J603 1 4

1 5

	VR604
	J601	7	J611
17	J601	7	1
17		1
18		2

Figure 6-3E

VR	Description

VR602	Use it to adjust the AE offset (use it only after replacing the scanning lamp unit, intensity
	sensor, AE sensor, or control panel PCB).

VR603	Use it to adjust the AE gain (use it only after replacing the scanning lamp unit, intensity
	sensor, AE sensor, or control panel PCB).

VR604	Use it to adjust the light intensity (use it only after replacing the scanning lamp unit, intensity
	sensor, AE sensor, or control panel PCB).

	Table 6-1E

6-6

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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 Image Adjustment Basic Procedure Pre-ChecksPoints to Note Mechanical GlassAdjusting the Intensity VR604 Electrical2B 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 Feeding Assembly Checking the Lens Array for DirtChecking the Transfer Charging Roller Checking the Copy PaperImage Troubleshooting Others Image Troubleshooting Samples of Image Faults Troubleshooting by Image Fault YESCopy is foggy overall Back Replace the cartridge Is the problem corrected? Copy has white spots cross feed direction Back of the copy is soiledCopy has faulty fixing Copy has a blurred image Copy is foggy cross feed directionCopy has poor sharpness focus Copy is blank Copy is solid blackImage Troubleshooting Troubleshooting Malfunctions Self diagnosis PC400/FC200Copyboard Does the copying operation start AC power is absent Pick-up fails Scanning lamp fails to go onMain motor fails to rotate Copyboard fails to movePaper feeding normally At time of jamFixing heater fails to operate Copy Paper Jams Pick-Up Assembly Separation/Feeding AssemblyFixing/Delivery Assembly Feeding Faults Double FeedingWrinkles Arrangement and Functions of Electrical Parts Sensors and SolenoidsSwitches Lamp, Heater, Motor, and Others Printed Circuit Board PCB Variable Resistors VR and Check Pins by PCB DC Controller/DC Power Supply PCBControl Panel PCB PC400/FC200Self Diagnosis Self Diagnosis General Timing Chart PC420/430/FC220 General Timing Chart A4, 2 copies Signals/Abbreviations List SignalsAbbreviations General Circuit Diagram PC420/430/FC220 General Circuit Diagram Special Tools Table Solvents/Oils Table Specifications LTR/A4 LGLNVD Prepared by This publication is printed on 70% reprocessed paper