Abnormal Image Printing And Defective Roller - Samsung SCX 6322DN - B/W Laser - All-in-One Service Manual

Alignment & Adjustments

4.6 Abnormal Image Printing and Defective Roller

If a mark or other printing defect occurs at regular intervals down the page it may be caused by a damaged or
contaminated roller. Measure the repetition interval and refer to the table below to identify the roller concerned.
Main Board+Engine Board Main Board+Engine Board Main Board+Engine Board
SMPS SMPS
1
OPC Drum
2
Charge Roller
3
Supply Roller
No Roller
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Develop Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
Service Manual
4-24
EXIT SENSOR BIN FULL SENSOR EXIT SENSOR
LIU LIU
EMPTY SEN EMPTY SEN EMPTY SEN
4
Developing Roller
5
Transfer Roller
Abnormal image period
94.30mm
38.30mm
43.80mm
54.30mm
56.60mm
83.60mm
91.00mm
EXIT EXIT SENSOR EXIT SENSOR SENSOR
EXIT UNIT EXIT UNIT EXIT UNIT
6
OPC UNIT OPC UNIT FUSER
OPC UNIT OPC UNIT OPC UNIT
1
2
OPC OPC
5
DRUM DRUM
4
TR TR
TONER UNIT TONER UNIT ONER UNIT
3
FTL FTL FTL
FEEDER FEEDER FEEDER
PICKUP ROLL PICKUP ROLL PICKUP ROLL
6
Heat Roller
7
Pressure Roller
Kind of abnormal image
White spot, Block spot
Horizontal density band
Horizontal density band
Black side contamination/transfer fault
Black spot and fuser ghost
Black side contamination
7
FEED SENSOR FEED SENSOR FEED SENSOR
EMPTY SENSOR(MPF) EMPTY SENSOR(MPF) EMPTY SENSOR(MPF)
MPF
Black spot
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