Canon FY8-23AV-000 manual Self Diagnosis

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CHAPTER 7 SELF DIAGNOSIS

Code

Cause

Description

 

 

 

 

• Copyboard drive assembly

• The copyboard position sensor (Q902)

 

(faulty operation)

goes ON when copying operation starts.

 

• Copyboard drive solenoid

• The copyboard position sensor (Q902)

 

(SL2; faulty)

is ON 0.8 sec after copying operation

 

• Copyboard position sensor PCB

has started.

 

(Q902; faulty)

• The copyboard position sensor (Q902)

 

• DC controller/DC power supply PCB

does not go ON within 5.5 sec after

 

(faulty)

copying operation has started.

 

 

• The copyboard does not reach the start

 

 

position within a specific period of time,

 

 

or it moves past the start position.

 

 

• The copyboard position sensor (Q902)

 

 

is ON 1.5 sec after the copyboard has

 

 

started moving forward from the start

 

 

position.

 

 

• The copyboard position sensor (Q902)

 

 

does not go ON 10.4 sec after the copy-

 

 

board has started moving forward from

 

 

the start position.

 

 

• The copyboard position sensor (Q902)

 

 

does not go ON 1.2 sec or 4.7 sec after

 

 

the copyboard has started moving in

 

 

reverse from the reversal position.

 

 

 

 

• Control panel PCB (faulty)

• The scanning lamp has remained for 2

 

• DC controller/DC power supply PCB

sec continuously at such times as not

 

(faulty)

prescribed.

 

 

 

 

• Power supply frequency (error)

• The power supply frequency is higher

 

 

than specified.

 

 

 

Note:

1.The copier does not use code ‘E1’, ‘E3’, ‘E4’, or ‘E5’.

2.After self diagnosis has gone ON, the copier may be reset by switching it OFF and then ON.

In the case of ‘E0’, however, the power is automatically turned OFF. To reset, disconnect the power plug once, open the upper cover, or wait about 5 minutes without any operation; during the period, the microprocessor remains powered and retains ‘E0’.

This consideration is to prevent the user from resetting the machine easily when the thermistor may have blown; otherwise, the fixing heater would become overheated, damaging parts near it.

3.Activation of self diagnosis forces the fixing heater (H1) and main motor (M1) OFF.

7-2

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Page 49 Page 51
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 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 Checking the Documents Making Initial ChecksSite Environment Checking the Transfer Charging Roller Checking the Feeding AssemblyChecking the Lens Array for Dirt 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 poor sharpness focus Copy has a blurred imageCopy is foggy cross feed direction 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 moveFixing heater fails to operate Paper feeding normallyAt time of jam Copy Paper Jams Pick-Up Assembly Separation/Feeding AssemblyFixing/Delivery Assembly Wrinkles Feeding FaultsDouble Feeding 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

FY8-23AV-000 specifications

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