Samsung Xpress M2670HN
Troubleshooting. Image quality 2
4. Black and White spot
• Description : Dark or blurry black spots occur periodically in the printing.
Probable Cause | Solution |
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If dark or blurry black spots occur periodically, the rollers in the Imaging unit may be contaminated with foreign matte or paper particles. • OPC Drum = 76 mm • Charge Roller = 34.5 mm • Developing Roller = 37 mm |
Clean each voltage terminal of the Charge, Developing roller and Transfer roller. (remove the toner particles and paper particles) |
If faded areas or voids occur in a black image at intervals of 76 mm, the OPC drum surface is damaged. | Replace the laser toner cartridge or imaging unit. |
If a black image is partially broken, the transfer voltage is abnormal or the transfer roller’s life has expired. | • If the transfer roller’s life is expired, replace it. • Clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble |
5. Light image
• Description : The printed image is light, with no ghost.
Probable Cause | Solution |
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Toner cartridge life is expired. | Replace the toner cartridge. |
HVPS terminal is contaminated. | Clean the contaminated terminal. |
The output from the HVPS is abnormal. | Replace the HVPS board. |
6. Dark or Black page
• Description : The printed image is dark or black.
Probable Cause | Solution |
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Check if the high voltage terminal is contaminated. | Clean the high voltage terminal. |
The charging roller is defective. | Replace the laser toner cartridge or imaging unit. |
The output from the HVPS is abnormal. | Replace the HVPS board. |