Toshiba DP1610
Troubleshooting. Image. 10 Uneven image density, Blotched image
(10) Uneven image density
| Step | Cause/Defect area | Check items | Measures |
|---|---|---|---|
| 1 | Paper | Paper in cassette or LCF damp? | Change paper. Avoid storing paper in damp place. |
| 2 | Laser scanner unit | Foreign matter or dust on lens? | Remove foreign matter or dust with blower. (Do not use a cloth.) |
| 3 | Process unit (main charger) |
Main charger wire stained? | Clean charger wire. |
| 4 | Process unit (developer) | Is toner put in process unit in an unbalanced manner? |
Shake process unit horizontally to place toner evenly. |
| 5 | Transfer charger unit | Transfer charger unit securely installed? | Re-install transfer charger unit securely. |
| 6 | Transfer charger wire dirty? | Clean transfer charger wire. | |
| 7 | If problem persists after measures are applied, or there is no problem found in above check, follow procedure described in right column. | Replace process unit, transfer charger unit, or laser scanner unit. |
(11) Blotched image
| Step | Cause/Defect area | Check items | Measures |
|---|---|---|---|
| 1 | Paper | Paper too thin? | Change paper. |
| 2 | Paper too dry? | Change paper. | |
| 3 | Transfer charger unit | Transfer charger case dirty? | Clean case. |
| 4 | Transfer charger wire dirty? | Clean wire. | |
| 5 | HVPS (transfer/separation charger) | High-voltage output defective? | Adjust output from HVPS, or replace defective HVPS. |
| 6 | If problem persists after measures are applied, or there is no problem found in above check, follow procedure described in right column. | Replace process unit. |