Toshiba e-Studio160 服务手册

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