Konica-Minolta bizhub PRESS 1250
Troubleshooting. IQ09. Printer system: Gradation error
Printer system:
Gradation error
Troubleshooting procedure
Section | Check item | Result | Action | |
---|---|---|---|---|
1 | Gradation pattern | Print out the test pattern No.3 or No.5 and the gradation pattern is without any trouble. | YES | Check the other density errors of the printer system. |
2 | Paper | It occurs on the particular paper. | YES | Check the setting of the paper type, and fix it. |
3 | Density | It occurs on the particular image (such as picture). | YES | Check Copy Setting ¨ Image Setting (letters, light letters, picture). |
4 | Setting menu → Function setting → Density setting → Image density selection |
The setting value adjustment of the image density solves the trouble. Too light: Change the setting value to the plus. Too dark: Change the setting value to the minus. |
NO | Go on to the next step. |
5 | Check the printer | Check mainly on the charging section, transferring section, photo conductor section, and the developing section. | NO | Clean, Replace |
6 | Connector, wiring | There is no problem on the image processing board, the overall control board, the write section, and the connector/wiring of the printer control board. | NO | Reconnect the connector Replace the wiring |
7 | Image Stabilization | The image stabilization solves the trouble. | NO | Go on to the next step. |
8 | The problem has been eliminated through the checks of steps up to 7. | NO | Check or replace the charging section → Replace the drum → Check or replace the transferring section → Check or replace the developing section → Replace the image processing board → Replace the high voltage unit /2 |