Lexmark C910 - Page 140

2-24 Service Manual
5055-01X
981 - Belt Up/Down Sensor Error
981 Service
Switch Error
Step
Questions /
Actions
Yes No
1 Are connectors
CN409 and
CN407 on the
sensor board
connected
properly?
Go to step 2. Plug the connectors
in securely.
2 Are connectors
CN26 and CN29
on the printer
controller board
connected
properly?
Go to step 3. Plug the connector in
securely.
3 Remove the
transfer belt. Verify
the belt up/down
sensor actuator
flag is properly
installed, not
broken, and in the
proper position.
Make sure the
sensor is fully
snapped in place
and that the
sensor connector
is fully seated. Are
these items
correct?
Go to step 4. If the sensor is out of
position or
disconnected,
properly install the
sensor and securely
connect the sensor
connector.
If the sensor actuator
flag is broken,
replace the belt up/
down changing
shaft.
4 Clean the belt up/
down sensor.
Does this fix the
problem?
Problem solved. Go to step 5.