Lexmark E238 Service Manual - Page 143

Printhead service check 4511-xxx FRU Printhead Action Unplug the printer. Disconnect the printhead cables from J13 and J14 on the controller card. Turn the printer on. On the controller card, verify +24 V dc on pin 5 at J13 and +5 V dc on pin 7 at J14. Verify grounds on pin 4 at J13 and on pins 2, 6, and 8 at J14. • If voltages or grounds are incorrect, check the controller card. See "Controller card service check" on page 2-82 for more information. • If voltages are correct, replace the printhead (comes with cables). Transfer roll service check FRU Transfer roll Action Check transfer roll area for debris, and clean area as necessary. Verify continuity between the spring below the left side bearing and the transfer roll shaft. Verify continuity in the spring and the cable connection on the LVPS/HVPS. Inspect the roll for signs of wear or damage and replace if necessary. Diagnostics-all models 2-111