Toshiba e-Studio3511 Service Handbook page 444

(21) Image jittering
Cause/Section Step
—
Registration roller
Transfer unit
Fuser unit
Drum
Scanner
Drum drive system
e-STUDIO3511/4511 TROUBLESHOOTING
Check items
1 Is the toner image on the drum proper?
2 Is the registration roller rotating normally?
3 Is the transfer belt or 2nd transfer roller
operating normally?
4 Are the fuser roller and pressure roller
rotation proper?
Is the fuser belt transportation proper?
5 Is there large scratch on the drum?
6 Is the slide sheet defective?
7 Are there any abnormalities on the
carriage feet?
8 Is the tension of timing belt
inappropriate?
9 Is the carriage drive system
malfunctioning?
10 Are any mirrors loosely installed?
11 Is the drum drive system malfunctioning?
Fig. 5-222
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
necessary.
Check the drive system.
Replace the fuser belt, fuser roller and
pressure roller if necessary.
Replace the drum.
Replace it.
Replace the feet.
Correct the tension.
Check the carriage drive system.
Install them properly.
Check the drum drive system.
Clean or replace the belts, pulleys,
bushings if they have dirt or scratches.
5 - 130
Measures
November 2003 © TOSHIBA TEC