Samsung ProXpress M453x series Service Manual page 204

4. Troubleshooting
5) Light image
Description : The printed image is light, with no ghost.
Probable Cause
The toner cartridge life is expired.
The imaging unit life is expired.
The surface of transfer roller is contaminated or worn out.
HVPS terminal is contaminated.
The output from the HVPS is abnormal.
4-109
Solution
Replace the toner cartridge.
Replace the imaging unit.
Replace the transfer roller.
Clean the contaminated terminal.
Replace the HVPS board.
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