Toshiba e-Studio250 Manuale Di Servizio
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e-STUDIO160/200/250 TROUBLESHOOTING
4 - 58
December 2002 TOSHIBA TEC
Main-Classification
—
Paper transport speed in
registration section
Drum
Main drive gear assembly
Drum Drive Gear
Polygonal mirror
Defect area
—
Abnormal paper
transport speed
Drum drive system
Laser scanner unit
Step
1
2
3
4
5
Cause
Sub-Classification
—
Low speed
Low speed
Surface condition
Installation condition
Damaged
Deformation
Surface inclined
Specific-Classification
—
Registration roller aging
change
Registration roller life
worn out
—
Damage
Attached foreign matter
—
—
—
Deformation
4.2 Troubleshooting of Image
(1) Uneven pitch and blur
<Symptoms>
Feeding
direction
Condition
All modes
Location
Occurs cyclically at right angles to
paper feeding direction
Phenomenon
Uneven pitch