Fuser Service Check - Lexmark C750 Service Manual

Fuser service check

Cold fuser service
If error code 122, 123, 126, 127, 128, 129, 130, 131, 132, or 133 is displayed, the printer detects a problem in
the fuser hot roll or back up roll fuser lamp circuits, fuser hot roll thermistor, back up roll thermistor, engine board
or LVPS fuser control circuits.
Hot fuser service
Error codes 124, 125, 134, and 135 appear whenever the printer detects a problem with the fuser running over
temperature or the fuser lamps have been on too long.
Excessive fuser drive motor assembly noise
Step Action and questions
1 Excessive noise from the fuser drive motor assembly—
check for correct installation of the fuser drive motor
assembly.
Is the fuser drive motor installed correctly?
2 Install a new fuser top duct. See
removal" on page
Is there still excessive noise from the fuser drive motor
assembly?
"Fuser top duct
4-34.
Yes No
Go to step 2 Correctly install the
fuser drive
assembly. See
"Fuser drive
assembly
removal" on
page
Replace the fuser Replace the fuser
drive assembly. top duct. See
See "Fuser drive "Fuser top duct
assembly removal" on
removal" on page
page 4-33.
Diagnostic information
5060-00x
4-33.
4-34.
2-127