Lexmark T630 - Printer - B/w, Service Manual

Page: 128 / 345

2-94
Service Manual
4060-xxx
Transfer roll service check
Service tip: The transfer roll is 51.02 mm (2.009 inch) circumference. Any print quality problems such
as lines that are spaced 51.02 mm apart indicate you should check the transfer roll for damage and
check for toner or foreign material buildup.
Service tip: The transfer roll assembly is part of the maintenance kit and is replaced when an 80
Scheduled Maintenance displays. Ask the customer if they have replaced the transfer roll recently.
CAUTION: Make sure the printer is unplugged before making any checks on the transfer
roll or associated parts for personal safety and to prevent damage to the printer.
FRU Action
1 Transfer roll assembly Check the transfer roll for toner buildup, surface damage to the roll,
oil, or other contaminants on the surface of the roll. Replace the
transfer roll as necessary.
2 Left transfer arm assembly Check the left transfer roll arm assembly to make sure it is fastened
and locked in the down position. If the arm is not locked down, make
sure the arm is not broken and locks into the EP frame correctly.
Check the left transfer arm assembly spring for proper operation.
3 Right transfer arm
assembly Check the right transfer arm assembly to make sure it is fastened and
locked in the down position. If the arm is not locked down, make sure
the arm is not broken and locks into the EP frame correctly. Check
the right transfer arm assembly spring for proper operation. For any
background problems, ensure the contact to the HVPS board is
correct and that there is approximately 0 ohms resistance between
the transfer roll shaft and the HVPS contact. If correct, go to
“Print
quality—background” on page 2-82 .
4 HVPS—917 Error code Check the voltage at J22-3. The voltage changes from +24 V dc with
the printer idle to 0 V dc when the printer runs the print test. If the
voltage is incorrect, check the continuity of line J22-3 in the front
cable harness to the HVPS. If there is no continuity, replace the cable
harness. If there is continuity, replace the HVPS. If the problem
continues, replace the system board.