(7) Black banding (in feeding direction)

Feeding direction

Step

Cause/Defect area

Check items

Measures

 

 

 

 

1

Scanner

Foreign matter in optical path?

Clean slit, lens and mirrors.

 

 

 

 

2

Process unit

Main charger wire stained?

Clean charger wire.

 

 

 

 

3

(main charger)

Foreign matter on grid?

Remove foreign matter.

 

 

 

 

4

 

Grid dirty or deformed?

Clean grid, replace process unit or grid.

 

 

 

 

5

Process unit (Drum)

Scratches on drum surface?

Replace process unit or drum.

 

 

 

 

6

Fuser unit

Dirt or scratches on heat roller

Clean or replace heat roller?

 

 

surface?

 

 

 

 

 

7

 

If problem persists after measures

Replace process unit or fuser unit.

 

 

are applied, or there is no prob-

 

 

 

lem found in above check, follow

 

 

 

procedure described in right col-

 

 

 

umn.

 

 

 

 

 

December 2002 TOSHIBA TEC

4 - 65

e-STUDIO160/200/250 TROUBLESHOOTING

Page 187
Image 187
Toshiba e-Studio200, e-Studio250, e-Studio160 manual Black banding in feeding direction Feeding direction