Samsung SCX-472 series Service Manual page 113

9) Ghost
Description : Ghost occurs at 75.49 mm intervals of the OPC drum.
Check and cause
The high voltage terminal is contaminated.
The life of the toner cartridge has been expired
The life of the transfer roller has been expired.
10) Stains on back of page
Description : The back of the page is stained.
Check and cause
Transfer roller is contaminated.
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4. Alignment and Troubleshooting
Solution
Clean the high voltage terminals.
Replace the toner cartridge.
Replace the transfer roller.
Solution
Replace the transfer roller.
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