Toshiba e-STUDIO351c Service Handbook page 528

21)Image jittering
Cause/Section Step
- 1
Registration 2
roller
Transfer unit 3
Fuser unit 4
Drum 5
Scanner 6
7
8
9
10
Drum drive sys- 11
tem
e-STUDIO281c/351c/451c TROUBLESHOOTING
Check items
Is the toner image on the drum proper?
Is the registration roller rotating normally?
Is the transfer belt or 2nd transfer roller
operating normally?
Are the fuser roller and pressure roller
rotation proper?
Is the fuser belt transportation proper?
Is there large scratch on the drum?
Is the slide sheet defective?
Are there any abnormalities on the car-
riage feet?
Is the tension of timing belt inappropriate? Correct the tension.
Is the carriage drive system malfunction-
ing?
Are any mirrors loosely installed?
Is the drum drive system malfunctioning?
Fig. 5-21
If proper, perform step 1 to 3; otherwise
perform step 4 and after.
Check the registration roller section and
its springs.
Check the drive system and replace the
transfer belt or 2nd transfer roller if neces-
sary.
Check the drive system.
Replace the fuser belt, fuser roller and
pressure roller if necessary.
Replace the drum.
Replace it.
Replace the feet.
Check the carriage drive system.
Install them properly.
Check the drum drive system.
Clean or replace the belts, pulleys, bush-
ings if they have dirt or scratches.
5 - 136
Measures
June 2005 © TOSHIBA TEC