6.2.5 Light Image• Description The printed image is light, with no ghost.Digital PrinterDigital PrinterDigital PrinterDigital PrinterDigital PrinterCheck and Cause Solution1. Develop roller is stained when the tonerof print cartridge is almost consumed.2. Ambient temperature is below than 10°C.3. Bad contact caused by the toner stainsbetween the high voltage terminal in theHVPS and the one in the set.4. Abnormal output from the HVPS.(Run self-test and check 1~4)5. Check warranty out.1. Check if the Toner Save mode is off.Check if the density is light.2. No 1 : Replace the print cartridge and try toprint out.3. No 2 : Wait 30 minutes after printer is pow-ered on before you start printing.4. No3 : Clean up the contaminated area bythe toner.5. Replace the HVPS if the problems are notsolved by the above four instructions.6. Replace print cartridge.6.2.6 Dark Image or a Black Page• Description The printed image is dark.Digital PrinterDigital PrinterDigital PrinterDigital PrinterDigital PrinterCheck and Cause Solution1. No charge voltage in the engine board.2. Charge voltage is not turned on due tothe bad contacts between power supplyin the side of the print cartridge andcharge terminal of HVPS.3. VD0 signal of the Main PBA is Low state.4. Case back side the cleaning blade ofprint cartridge.1. Check the state of the connector whichconnects the engine board and HVPS.2. Clean the high voltage charge terminal.3. Replace the HVPS if not solved by theabove direction 1 and 2.4. Replace the LSU Unit or Main PBA.5. Replace print cartridge.Service Manual 6-3Samsung Electronics6-4Troubleshooting
