Canon FY8-23AV-000 manual Self Diagnosis

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CHAPTER 7 SELF DIAGNOSIS

CHAPTER 7 SELF DIAGNOSIS

The copier’s microprocessor on the DC controller/DC power supply PCB is equipped with a self diagnostic mechanism that checks the condition of the machine; when the mechanism detects an error, it indicates an error code on the copy count display.

(The PC400/FC200 does not have a copy count display; it indicates an error condition by flashing the Jam indicator.)

‘E6’ is represented by alternating

Code	Cause	Description

	• Thermistor (TH1; faulty)	• The temperature of the fixing heater is
	• Fixing heater (H1; faulty)	215°C or more.
(Note)	• DC controller/DC power supply (faulty)	• The temperature of the fixing heater
		does not reach 80°C within 2.5 sec after
		copying operation has started.
		• The temperature of the fixing heater
		lowers below 135°C after has reached
		150°C.
		• The temperature of the fixing heater
		does not reach 150°C within 7.5 sec
		after copying operation has started.
		• The maximum supply power is detected
		for about 5 sec after the temperature of
		the fixing heater has reached 150°C.

Note:

If an error associated with ‘E0’ is detected, ‘E’ is displayed (PC420/430/FC220) or the Jam indicator (PC400/FC200) remains ON for about 0.5 sec; thereafter, the power goes out.

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Contents Service Handbook Copyright 1998 Canon INC Contents Troubleshooting Malfunctions Self Diagnosis Page Durables Periodically Replaced PartsPeriodical Servicing Storing Sealed Cartridges 1D Temperature/Humidity Specifications2D 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 Site Environment Making Initial ChecksChecking the Documents 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 is foggy cross feed direction Copy has a blurred imageCopy 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 rotateAt time of jam Paper feeding normallyFixing heater fails to operate Copy Paper Jams Separation/Feeding Assembly Pick-Up AssemblyFixing/Delivery Assembly Double Feeding Feeding FaultsWrinkles 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