Lexmark C77x Service Manual page 152

5061
Step Actions and questions
4 Check the continuity of the second transfer cable.
Is there continuity?
5 Make sure the ITU bias spring is not broken or missing
for the color(s) that is having transfer problems.
Is the ITU bias spring broken, off, or missing?
6
Check the transfer HVPS to ITU HV transfer terminal
for the color(s) that is having transfer problems.
Is the cable disconnected or broken?
7 Transfer terminal contact assembly and ITU transfer
bellcrank—Check the transfer terminal contact,
transfer cable, and ITU transfer bellcrank assemblies
to make sure they are installed correctly, not loose, or
broken.
Are there any problems with the transfer terminal
contact, transfer cable connection, or ITU transfer
bellcrank assemblies?
2-110
Service Manual
Yes No
Replace the Replace the
FRUs in order: second transfer
cable.
1) Second
transfer roll. See
"Second
transfer roll
removal" on
page 4-88.
2) Transfer
HPVS board.
See "Transfer
HVPS board
removal" on
page 4-91. If this
does not correct
the problem, go
to step 5.
Repair as Go to step 7
necessary.
Reinstall or Go to step 7
replace the
cable.
Repair or replace Replace the
as necessary. If FRUs in order:
this does not
1) Transfer
correct the
HVPS board.
problem, contact
See
your next level of
HVPS board
support.
removal" on
page
2) Second
transfer roll. See
"Second
transfer roll
removal" on
page
3) ITU assembly.
See
assembly
removal" on
page
"Transfer
4-91.
4-88.
"ITU
4-49.