Lexmark C77X, Service Manual

Page: 157 / 480

Diagnostic information
2-113
5061
StapleSmart finisher service check
Note: When removing the stapler mechanism from the option, first remove the staple supply cartridge.
Note: When replacing staples in the supply cartridge, discard any old staples in the cartridge, and replace with
a fresh strip.
Problems with static electricity buildup
Make sure the brush is attached to the top cover assembly, the ground clips are installed, and the brush is
grounded.
Printer does not recognize StapleSmart finisher option as being installed
Close Finisher Top Cover
displayed—unable to clear or reset message (POST incomplete)
Step Actions and questions Yes No
1 Check the StapleSmart finisher autoconnects for signs
of damage, especially the connector pins. Remove the
right cover, and check the cables at J1A and J1B
(bottom autoconnect) to the stapler card assembly to
make sure they are attached securely.
Are the cables secure?
Go to step 2 Reconnect the
cables securely.
2 Check the voltages of the StapleSmart finisher
autoconnect. See
“StapleSmart finisher” on
page 5-28 . The measurements should be
approximately:
Do the voltages measure correctly?
Replace the
staple option. Replace the
printer top
options
autoconnect
cable.
Step Actions and questions Yes No
1 Top cover assembly—Check the top cover assembly
to make sure it is actuating the top cover switch and
the cover is opening and closing correctly.
Is the actuating the switch and closing properly?
Go to step 2 Replace the
safety cover
open switch
assembly.
2 Top cover switch stapler card assembly—Check the
continuity of the stapler top cover open switch.
Is there continuity?
Replace the
stapler card
assembly. Replace the
switch assembly.
J1A—top autoconnect
Connector Voltage
J1A-1 +24 V dc
J1A-3 Ground
J1A-3 +5 V dc