Lexmark C77X, Service Manual

Page: 113 / 480

Diagnostic information
2-69
5061
StapleSmart finisher
Check Bin x
displayed—POST incomplete.
Step1—During POST, the stapler option does not try to home.
Replace the stapler option.
Step 2—During POST, the stapler option tries to home.
Replace the stapler option.
5-bin mailbox option service check
Note: Before proceeding with this service check, make sure the option(s) are installed correctly before
attempting to service the unit. Make sure the machine is configured correctly. The majority of the mechanical
components can be observed during operation by removing the left and right side covers.
4 Output expander control board check—Disconnect the
motor cable at J4, and check the voltages at J4 on the
board.
Warning : Be careful not to short to adjacent pins on
the connector.
The voltages measure approximately:
Are the voltages correct?
Replace the
output expander
control board. Replace the
mechanical
linkage/DC motor
assembly.
Step Actions and questions Yes No
1 Problems with excessive static electricity buildup. Go to “Problems
with excessive
static electricity
buildup.” on
page 2-94
.
Go to step 2
2 The printer does not recognize one or more output
options as installed. Go to “The
printer does not
recognize one
or more output
options as
installed.” on
page 2-70
.
Go to step 3
3 272.xx Paper Jam—Check Bin 1 message Go to “272.xx
paper jam
service check”
on page 2-52
.
Go to step 4
Step Actions and questions Yes No
J4—Output Expander control
board (motor idle)
J4-1 +24 V dc
J4-2 +24 V dc
J4-3 +5 V dc
J4-4 +5 V dc