Lexmark C750 Service Manual page 96

5060-00x
155 Error code
Hot fuser
Step Action and questions
1 Connector J8 on the engine board—make sure that the
fuser drive motor cable is correctly connected to J8 on
the engine board. Go to
Is the cable connected correctly?
2 FRU replacement—replace the following FRUs in the
order shown:
1. Fuser drive assembly. See
removal" on page
2. Engine board. See
page
156 Error code
Black cartridge drive assembly
The black cartridge drive motor has either failed to lock or has lost lock.
Note: Any time any of the cartridge drive motor assemblies are replaced, perform the
page 3-16. If this procedure is not performed, error code 168 is displayed.
Step Actions and questions
1 Check the black cartridge drive motor cable connection
to J64 on the engine board.
Is the cable installed correctly?
2 Check the black cartridge drive motor cable connection
to the black cartridge drive motor card.
Is the cable installed correctly?
3 Check continuity of the black cartridge drive motor
cable. Is there continuity?
4 Replace the black cartridge drive assembly. Perform
the "Motor Detect" on page
Does this fix the problem?
5 Replace the engine board.
Does this fix the problem?
2-62
Service Manual
"Engine board" on page
"Fuser drive assembly
4-33.
"Engine board removal" on
4-29.
3-16.
Yes
Go to step 2
5-7.
Replace the fuser
drive assembly.
See "Fuser drive
assembly
removal" on
page 4-33
"Motor Detect" on
Yes
Go to step 2
Go to step 3
Go to step 4
Problem solved
Problem solved
No
Correctly install the
cable
Replace the fuser
top duct. See
"Fuser top duct
removal" on
page 4-34
No
Install the cable
correctly
Install the cable
correctly
Replace the black
cartridge assembly
cable
Go to step 5
Call your next level
support