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Samsung Electronics
ALIGNMENT & ADJUSTMENTS
Service
Manual
6.7 Periodic Defective Image
If the delinquent image regularly occurs in the printed-paper, it is due to delinquent or damaged roller.
Refer to the table in below and check the condition of the roller.
No Roller Defective image Typical defect
1 OPC Drum 75.5mm white spot on black image or black spot
2 Charge Roller 37.7mm black spot
3 Supply Roller 37.0mm light or dark horizontal image band
4 Developing Roller 35.3mm horizontal image band
5 Transfer Roller 45.3mm image ghost
6 Heat Roller 64.1mm Black spot and image ghost
7 Pressure Roller 75.5mm black spot on the backside
PTL
L S U
Fuser
Toner Cartridge
1
2
3
7
6
5
4
MP Sensor
1
2
3
4
OPC Drum
Charge Roller
Supply Roller
Developing Roller
5
6
7
Tramsfer Roller
Heat Roller
Pressure Roller
PTL
P
I
C
K
/
R
PR
CR
DR
SR
TR FR
OPC
L S U
Fuser
Toner Cartridge
MP Sensor
<Rollers Layout>