Samsung MultiXpress M537x series Service Manual page 338

4. Troubleshooting
9) Ghost
Description : Ghost occurs.
Probable Cause
The residual toner on the rollers exists.
The contact terminal of the imaging unit is bad.
The transfer roller is contaminated or worn out.
The pressure roller or heat roller in fuser unit defective.
The HVPS contact terminal is contaminated.
The output from the HVPS is abnormal.
4-202
Solution
Print 10 test prints.
1) Clean the contact terminal of the imaging unit.
2) Replace the imaging unit.
Replace the transfer roller.
1) Turn the machine off.
2) Remove and replace the fuser unit.
3) Turn the machine on.
WARNING
Do not touch the fuser unit while it is hot.
Clean the HVPS contact terminal.
Replace the HVPS board.
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