Samsung SCX-6345N/XAA Service Manual page 166

Error
[Description]
[Wrong Part]
[Check and Cause]
[Solution]
Error
[Description]
[Wrong Part]
[Check and Cause]
[Solution]
Error
[Description]
[Wrong Part]
[Check and Cause]
[Solution]
Samsung Electronics
Light Image
1. The printed image is light, with no ghost.
1. Drum Cartridge
2. HVPS
1. The state of low toner in drum cartridge when the toner of toner cartridge is almost
consumed.
2. Ambient temperature is below than 10 .
3. Bad contact caused by the toner stains between the high voltage terminal in the
HVPS and the one in the set.
4. Abnormal output from the HVPS.
1. Replace the drum cartridge and try to print out.
2. Wait 30 minutes after printer is powered on before you start printing.
3. Clean up the contaminated area by the toner.
4. Replace the HVPS if the problems are not solved by the above four directions.
Dark Image or black
The printed image is dark.
1. HVPS
1. No charge voltage in the HVPS board.
2. Charge voltage is not turned on due to the bad contacts between power supply in the
side of the drum cartridge and charge terminal of HVPS.
1. Clean the high voltage charge terminal.
2. Check the state of the connector which connects the engine board and HVPS.
3. Replace the HVPS if not solved by the above direction 1 and 2.
Background
Light dark background appears in whole area of the printing.
1. HVPS
2. Low Q/M of developer (High T/C of developer)
1. Does recycle paper be used?
2. Has the life of the developer(carrier+toner) ended?
3. Is the HVPS normal?
1. The Drum cartridge is basically designed to print 60K sheets with simplex mode. If it
prints more than 60K sheets, (around 50K sheets) a background can be occurred.
2. The drum cartridge is not guaranteed if using recycle paper.
3. Replace the drum cartridge when the life of it has been ended.
4. Clean the bushing part of the transfer roller.
5. If the problem is still not solved, replace the drum cartridge.
Troubleshooting
Service Manual
6-19