Samsung ProXpress M3375FD
Troubleshooting. Image quality 3
7. Uneven Density
• Description : Print density is uneven between left and right.
Probable Cause | Solution |
---|---|
• The pressure force on the left and right springs of the transfer roller is not even. • The springs are damaged. • The transfer roller is improperly installed. |
1) Remove the transfer roller Assy. 2) Check if the transfer roller Assy has any wrong part. 3) Replace the transfer roller Assy. |
The toner level is not even on the imaging unit roller due to the bad blade. | Replace the imaging unit. |
8. Background
• Description : Light dark background appears in whole area of the printing.
Probable Cause | Solution |
---|---|
Does recycle paper be used? | Use the proper papers. |
The life of the imaging unit has been expired | Replace the imaging unit. |
The output from the HVPS is abnormal. | Replace the HVPS board. |
9. Ghost
• Description : Ghost occurs.
Probable Cause | Solution |
---|---|
The residual toner on the rollers exists. | Print 10 test prints. |
The contact terminal of the imaging unit is bad. | 1) Clean the contact terminal of the imaging unit. 2) Replace the imaging unit. |
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. |
The HVPS contact terminal is contaminated. | Clean the HVPS contact terminal. |
The output from the HVPS is abnormal. | Replace the HVPS board. |