Lexmark C78x User Manual

2-34 Service Manual
5061
4
Reinstall fuser and perform the “BASE SENSOR
TEST” on page 3-24.
Note: Use a spring hook to actuate the flag.
Does fuser exit sensor pass test?
Go to step 5 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.
5
Check the vacuum transport belts (VTB) for motion.
Observe the belt through the front door.
Are the belts on the VTB assembly turning?
Go to step 6 Go to “Vacuum
transport belt
(VTB) removal”
on page 4-96 to
verify correct
installation.
6
Check the VTBs for wear or damage.
Are the belts worn or damaged?
Replace the
vacuum transport
belt. See
“Vacuum
transport belt
(VTB) removal”
on page 4-96.
Go to step 7.
7
Check the VTB plate for a buildup of debris.
Is there a debris buildup?
Clean off the VTB
plate.
Go to step 8
8
Does media move smoothly into the fuser from the
VTB?
Call the next level
of support.
Replace the
vacuum transport
belt. See
“Vacuum
transport belt
(VTB) fan
removal” on
page 4-98.
Step Actions and questions Yes No

Lexmark C78x Specifications

General

Brand	Lexmark
Model	C78x
Category	Printer
Language	English