Samsung Xpress M2020
Troubleshooting. Image quality 4
10. Stains on back of page
• Description : The back of the page is stained.
| Probable Cause | Solution |
|---|---|
| The transfer roller is contaminated or worn out. | Replace the transfer roller. |
| The pressure roller or heat roller in fuser unit defective. | 1) Turn the machine off. 2) Remove and replace the fuser unit. 3) Turn the machine on. WARNING Do not touch the fuser unit while it is hot. |
11. Blank page
• Description : No visible image anywhere on the output.
| Probable Cause | Solution |
|---|---|
| The ground contact of laser toner cartridge or imaging unit is bad. | Clean the ground terminal of laser toner cartridge or imaging unit. If the problem persists, replace it. |
| LSU is defective. | Replace the LSU. |
| The connection between the main board and HVPS board is bad. | Reconnect the harness. If the main board or HVPS board is defective, replace it. |
12. Partial image void
• Description : The partial void occurs in the printed page.
| Probable Cause | Solution |
|---|---|
| The printer is not installed on flat ground. | Install the printer on flat ground. Print 10 sample pages for test. |
| The developer circulation in the laser toner cartridge or imaging unit is bad. | 1) Shake the laser toner cartridge or imaging unit 2~3 times from right to left. Reinstall it. Print 10 sample pages for test. 2) If the problem persists, replace the laser toner cartridge or imaging unit. |
| The contact between imaging unit and transfer roller is bad. | Check if the imaging unit and transfer roller are installed properly. |
13. Unfused image
• Description : The printed image is not fully fused to the paper. The image rubs off easily
| Probable Cause | Solution |
|---|---|
| The papers are wet with moisture. | Replace the paper. |
| The fuser unit is not tight. | 1) Turn the machine off. 2) Remove and reinstall the fuser unit. 3) Turn the machine on. |
| The fuser connection is bad. | Check the connection between the fuser unit and main board. |
| The fuser unit defective. | 1) Turn the machine off. 2) Remove and replace the fuser unit. 3) Turn the machine on. WARNING Do not touch the fuser unit while it is hot. |