Samsung SCX-8030ND Series - Uneven Pitch and Jitter Image

7.Trouble
s
7.3.6 Uneven pitch and jitter image
A. Typical faulty images
Paper feeding
direction
B. Troubleshooting procedure
Step Section Check item
1 Test Printing Print the halftone pattern.
Check if the jitter has occ
u
2 Imaging unit 1.35mm or 2.0mm or 2.3
m
mm periodic jitter has oc
c
3 Main Drive Unit 0.77mm or 1.1mm period
i
occurred.
4
Laser
Scanning Unit
0.508mm or 0.65mm peri
o
has occurred.
5
Regi roll Gear
1.25 or 2.5mm periodic jit
t
occurred.
6 Imaging unit 94mm periodic jitter has
o
7 Main Drive Unit
A
fter replacing the imagin
mm periodic
j
itter or band
j
occurred.
8 Imaging unit 35mm or 62mm or 43mm
jitter or band has occurre
d
9 Main Drive Unit
A
fter replacing the imagin
mm periodic jitter or band
occurred.
10 Transfer roller 55~56mm periodic band
h
occurred.
Service Manual
SCX-8030/8040 series
7-1
s
hooting
Result Action
u
rred.
Yes Follow next steps.
m
m or 2.7
c
urred.
Yes Replace the imaging unit.
i
c jitter has Yes Replace the Main Drive
unit.
o
dic jitter Yes
Replace the Laser
Scanning Unit (LSU).
t
er has Yes
Replace the Regi Roll
Gear in main unit.
o
ccurred. Yes Replace the imaging unit.
g unit, 94
has
Yes Replace the Main Drive
unit.
periodic
d
.
Yes Replace the imaging unit.
g unit, 35
has
Yes Replace the Main Drive
unit.
h
as Yes Replace the Transfer
roller.
SAMSUNG ELECTRONICS
Version 0.05
16