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December 2002 TOSHIBA TEC 4 - 81 e-STUDIO160/200/250 TROUBLESHOOTING
(23) Jittering image
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Cause/Defect area
_
Registration roller
Pinch roller
Heat roller
Process unit (Drum gear,
cleaner paddle drive gear,
toner recovery auger drive
gear)
Process unit (Drum)
Carriage operation
Scanner
Drum drive system
Main drive gear assembly
Measures
If normal, perform step 2 to 4. Otherwise per-
form step 5 and after.
Clean roller surface with alcohol, or replace
roller.
Re-mount or replace spring.
Check heat roller drive system.
Replace gear or roller if necessary.
Clean gears.
Replace process unit or drum.
Replace slider sheet.
Replace feet.
Adjust the tension.
Check carriage drive system.
Fix mirror properly.
Re-install wire and timing belt with jig.
Clean or replace gears if they have stain or
scratches.
Re-install main drive gear assembly with jig.
Check items
Toner image paper on drum nor-
mal?
Registration roller dirty?
Pinch roller spring out of place?
Heat roller rotation defective?
Foreign matter or toner on gears?
Large scratch on drum?
Slider sheet defective?
Any abnormalities on carriage
feet?
Tension of timing belt inappropri-
ate?
Carriage drive system malfunc-
tioning?
Mirror loosely mounted?
Wire and timing belt tension
proper?
Drum drive system malfunction-
ing?
Main drive gear assembly improp-
erly mounted?
Feeding direction