Lexmark 7421 XM9165
Troubleshooting. Print quality. Gray background check
| Actions | Yes | No |
|---|---|---|
| Step 1 a Navigate to Settings > Allow Background Removal. Make sure that the value is set to On. b Navigate to Settings > Print Settings > Quality Menu. Decrease the toner darkness (8 is the default value). Does the problem remain? |
Go to step 2. | The problem is solved. |
| Step 2 Perform print quality calibration. Navigate to: Settings > Print Settings > Quality Menu > Adjust Print Quality Does the problem remain? |
Go to step 3. | The problem is solved. |
| Step 3 Enter the Configuration menu, and then select Print Quality Pages. Does the problem remain? |
Go to step 4. | The problem is solved. |
| Step 4 Enter the Configuration menu, and then navigate to: Automatic Image Stabilization > Auto Align Adj Make sure that the value is set to On. Does the problem remain? |
Go to step 5. | The problem is solved. |
| Step 5 a Make sure that the sensor (toner density) is free of dust or debris. b Reseat the sensor cable. c Check the sensor and its cable for damage, and replace if necessary. Does the problem remain? |
Go to step 6. | The problem is solved. |
| Step 6 Observe the toner density solenoid. Is it working properly? |
Go to step 7. | The problem is solved. |
| Step 7 Check the solenoid and its actuator for wear or damage, and replace if necessary. Does the problem remain? |
Go to step 8. | The problem is solved. |
| Step 8 a Make sure that the cartridge and photoconductor are installed. b Make sure that the cartridge and photoconductor are supported. Does the problem remain? |
Go to step 9. | The problem is solved. |
| Step 9 Enter the Diagnostics menu, and then navigate to: PRINTER SETUP > Printed Page Count Does the page count reach 300K or 600K? |
Go to step 10. | Go to step 11. |
| Step 10 Check the following parts for damage or contamination, and replace if necessary. • Transfer roller • Transfer belt • Developer unit Does the problem remain? |
Go to step 11. | The problem is solved. |
| Step 11 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 12. | The problem is solved. |
| Step 12 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 13. | The problem is solved. |
| Step 13 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 14. | The problem is solved. |
| Step 14 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. |