Canon FY8-23AV-000 manual Making Initial Checks, Site Environment, Checking the Documents

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CHAPTER 3 IMAGE TROUBLESHOOTING

CHAPTER 3 IMAGE TROUBLESHOOTING

A. Making Initial Checks

1.

Site Environment

 

 

a.

The voltage of the power source must be within the specifications.

 

 

b.

Avoid areas subjected to dust or high temperature/humidity (near water faucets,

 

 

 

water boilers, humidifiers) and areas near open fires.

 

 

c.

Avoid areas subjected to ammonium gas.

 

 

3

 

d.

Avoid direct rays of the sun; otherwise, provide curtains.

 

e.

Make sure the site is well ventilated.

 

f.

Make sure the floor is level.

 

 

Check the site to see if it meets the above requirements.

 

2.

Checking the Documents

 

 

You must first check to see if a particular problem may not be due to the document

 

used.

a.The copy density reading should be 5.5 ±1.5 (black)/4.5 ±1.5 (color).

b.Some backgrounds, i.e., yellow shades, tend to produce copies with poor contrast.

c.Diazo copies or translucent documents tend to produce copies that may be mistaken for foggy copies.

d.Documents prepared in light pencil tend to produce copies that may be mistaken for light copies.

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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 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 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