Lexmark 7421-036 MX910de
Troubleshooting. Print quality. Streaked horizontal or vertical lines check
| Actions | Yes | No |
|---|---|---|
| Step 1 a Make sure that the photoconductor and printhead are clean. b Make sure that the photoconductor and printhead are properly installed. c Check the photoconductor for damage, and replace if necessary. Does the problem remain? |
Go to step 2. | The problem is solved. |
| Step 2 a Make sure that the toner cartridge supply is not low. b Check the photoconductor for contamination or damage, and replace if necessary. Does the problem remain? |
Go to step 3. | The problem is solved. |
| Step 3 Enter the Diagnostics menu, and then navigate to: PRINTER SETUP > Printed Page Count Does the page count reach 300K or 600K? |
Go to step 4. | Go to step 5. |
| Step 4 Check the following for damage: • Developer unit • Transfer belt • Transfer roller Replace the parts if necessary. Does the problem remain? |
Go to step 5. | The problem is solved. |
| Step 5 a Make sure that the erase LED is properly installed. b Check the LED for damage, and replace if necessary. Does the problem remain? |
Go to step 6. | The problem is solved. |
| Step 6 CAUTION—SHOCK HAZARD: Do not perform this step if the printer is on. a Make sure that the following cables are properly connected: • High voltage charge cable • High voltage transfer cable • High voltage toner charge cable b Make sure that the high voltage charge and developer contacts are secure. c Check the high voltage board cables and contacts for damage, and replace if necessary. Does the problem remain? |
Go to step 7. | The problem is solved. |
| Step 7 CAUTION—SHOCK HAZARD: Do not perform this step if the printer is on. a Make sure that the high voltage board cables are properly connected. b Check the high voltage board for damage, and replace if necessary. Does the problem remain? |
Go to step 8. | The problem is solved. |
| Step 8 a Make sure that the printhead is properly installed. b Check the printhead for damage, and replace if necessary. Does the problem remain? |
Contact the next level of support. | The problem is solved. |