IBM Infoprint 1130, Service Manual

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Diagnostic Information
2-123
IBM Infoprint 1130/1140
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, toner or foreign material buildup.
Service Tip: The transfer roll assembly is part of the Maintenance Kit
and is replaced when a '80 Scheduled Maintenance” message
displays. Ask the customer if they have replaced the transfer roll
recently.
CAUTION: Make sure the printer is powered Off before making any
checks on the transfer roll or associated parts for personal safety
and to prevent damage to the printer.
3 Toner Sensor The toner sensor cable is part of the
front harness and part of connector
J25 on the system board. Check the
voltage at J25-11. It reads
approxi5 V dc. If incorrect,
replace the system board. If correct,
check the voltage at J10-12. It reads
approxi5 V dc with the
system board removed from the
printer. If incorrect, replace the
system board. If correct, replace the
toner sensor assembly. A bad
ground connection between J25-14
on the system board and pin 3 on
the toner sensor results in a 929
service error.
FRU Action
1 Transfer Roll Assembly Check the transfer roll for any signs
of toner buildup, surface damage to
the roll, oil or other contaminants on
the surface of the roll. Replace the
transfer roll as necessary.
FRU Action