Lexmark C78x Service Manual page 80

5061
Step Actions and questions
4 Reinstall the fuser and perform the
TEST" on page 3-24
Note: Use a spring hook to actuate the flag.
Does the fuser exit sensor pass?
5 Check that the duplex diverter rotates freely with the
redrive door closed.
Does the duplex diverter rotate freely?
6 Check for the proper operation of the redrive.
Are both belts in good condition and properly installed?
7 If the duplex option is in use, check the lower right door
paper path.
Does media pass freely between the door and the
metal plate?
8 If the duplex option is in use, remove the duplex R.H.
access panel to check if the jam occurred at duplex
entry edge guide.
Did the jam occur at the duplex entry edge guide?
9 If the duplex option is in use, check the actuator button.
See
on page
Should the actuator button be replaced?
2-36
Service Manual
for the fuser exit sensor.
"Duplex option deflector button replacement"
A-3.
Yes
"BASE SENSOR Go to step 5
Go to step 6
Go to step 7
Go to step 8
Replace the
duplex option.
Replace the
button.
No
Perform the
following in order:
1. Reseat the
connector
J17 on the
system
board.
2. Replace the
fuser
assembly.
See "Fuser
assembly
removal" on
page 4-44.
3. Replace the
LVPS
assembly.
See "LVPS
assembly
removal" on
page 4-53.
4. Replace the
system
board. See
"System
board
removal" on
page 4-90.
Replace the
redrive door. See
"Redrive door
removal" on
page 4-26.
Install or replace
the redrive door.
See "Redrive
assembly
removal" on
page 4-83.
Replace the
lower right door
assembly. See
"Lower right
door assembly
removal" on
page 4-24.
Go to step 9
Go to step 10