Lexmark C734 Service Manual page 158

5026
Step Questions / actions
6 1. Replace the fuser.
2. Bring the printer up in Diagnostics Menu
(turn off the printer, press and hold
. and turn on the printer).
3. Select SENSOR TESTS, and press
Select (
4. Select Dynamic Sensors, and press
Select (
5. Select Fuser Exit, and press
Select (
6. Open the front door, and then the top
access cover.
7. Activate the fuser exit sensor.
Did the fuser exit sensor change from Open to
Closed?
2-124
Service Manual
).
).
).
Yes
Problem resolved.
and
No
Replace the system board.
See "System board
removal" on page 4-139.