(15) Color banding (at right angles to feeding direction)

Feeding direction

Cause/Defect area

Step

Check items

Measures

Main charger wire

1

Charger wire dirty or deformed?

Clean or replace charger wire.

Fuser roller

2

Fuser roller or oil roller dirty?

Clean them.

High-voltage transformer

3

High-voltage transformer output defective?

Check circuit and replace high-voltage transformer

(main charger/

 

 

if defective.

transfer roller)

 

 

 

Drum

4

Deep scratch on drum surface?

Replace drum if scratch has reached aluminum

 

 

 

base.

 

5

Fine scratches on drum surface (drum pit-

Check and adjust contact of cleaning blade and re-

 

 

ting)?

covery blade.

Scattered toner recovery

6

Electrical continuity secured between de-

If not, replace developer bias supply spring.

roller of developer unit

 

veloper bias supply spring and recovery

 

 

 

roller?

 

Scanner carriage section

7

Foreign matter on carriage rail?

Remove foreign matter.

January 2000 © TOSHIBA TEC

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FC-22 TROUBLESHOOTING

Page 197
Image 197
Toshiba manual FC-22 Troubleshooting