Xerox C2424 Service Manual - Page 256

Color is Uneven or Color is Wrong This may be due to incorrect colors in the ink loader, old ink in the printhead, color mixing at the faceplate, or drum thermal problems. NOTE: Using non-Xerox ink may cause unpredictable color results. s2424-078 Step Questions and Actions Yes 1 1. To remove discolored jets in the printhead, Complete. run the solid fill test print for the color displaying the discolored jets. NOTE: For instructions on printing solid fill test prints, see "13-19: Black, Red, Green, Blue, Cyan, Magenta, and Yellow Solid Fills" on page 5-42. 1. Purge the printhead up to three times. If some improvement is seen, the ink could be discolored due to a long period of time without use. 2. Did this correct the problem? 2 1. Clean the maintenance kit wiper blade or replace the maintenance kit. 2. Did this correct the problem? Complete. 3 1. Check the thermal regulation of the drum. 2. Run the service diagnostics drum thermal check test, see "Check Heaters Menu" on page 4-25. 3. Are the drum thermal values out of the appropriate range? Go to Step 4. 4 1. Ensure the drum fan is correctly installed and operates correctly. Go to Step 5. 5 1. Verify the drum temperature sensor is in contact with the drum. 2. Clean or replace the drum termperature sensor. 3. Did this correct the problem? Complete. No Go to Step 2 Go to Step 3. Go to Step 5. Replace the drum fan. Replace in the following order: ■ Drum heater relay board ■ Drum assembly ■ Electronics module 5-16 WorkCentre C2424 Service Manual