Toshiba E-STUDIO520, Service Manual, Page: 474 / 592

e-STUDIO520/600/720/850 TROUBLESHOOTING March 2005 © TOSHIBA TEC
5 - 146
19)Jittering image
Fig.5-19
Defective area Step Check items Prescription
- 1 Is the toner image on the drum nor-
mal? If normal, perform steps 2 to 4. Per-
form step 5 and followings in case
the image is abnormal.
Registration roller 2 Is the registration roller rotating nor-
mally? Check the registration roller area and
springs for installation condition.
Fuser roller and pressure
roller 3 Are the fuser roller and pressure
roller rotating normally? Check the fuser roller area.
Replace the rollers if necessary.
Drum 4 Is there a big scratch on the drum? Replace the drum.
Operation of carriage 5 Is there any problem with the slide
sheet? Replace the slide sheet.
6 Is there any problem with the car-
riage foot? Replace the carriage foot.
7 Is the tension of the timing belt nor-
mal? Adjust the tension.
8 Is there any problem with the drive
system of the carriage? Check the drive system of the car-
riage.
Scanner 9 Is the mirror secured? Secure it.
Drum drive system 10 Is there any problem with the drive
system of the drum? Check the drive system of the drum.
Clean or replace the gears if they
have stains or scratches.
Feeding direction