Samsung MultiXpress M4370LX
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 contact terminal of the imaging unit is bad. | 1) Clean the contact terminal of the imaging unit. 2) Replace the imaging unit. |
The surface of transfer roller is contaminated or worn out. | Replace the transfer roller. |
The LSU window is contaminated. | 1) Clean the LSU window. 2) Replace the LSU |
The connection between the LSU and main board is defective. | 1) Disconnect and reconnect the harness. 2) Replace the harness. |
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 imaging unit is bad. | 1) Shake the imaging unit 2~3 times from right to left. Reinstall the imaging unit. Print 10 sample pages for test. 2) If the problem persists, replace the imaging unit. |
The contact between imaging unit and transfer roller is bad. | Check if the imaging unit and transfer roller are installed properly. |