Lexmark Optra Color 1200 Service Manual page 49

5050-001
Message
977 Network Card Error
980 Switch Error
Transfer Belt or Belt Up/
Down (BUD) Sensor
Problem
981 Switch Error
Abnormal FU/FD
Switching
The system processor has detected
an INA is installed but cannot
communicate with it. The X after the
card indicates which one has the
problem. Network card 1 always
refers to the INA in the bottom slot
and Network card 2 always refers to
the INA in the top slot.
Be sure the RIP controller card riser
card is properly installed.
1. Be sure connector CN106 is
connected to the printer controller
board.
2. Be sure the BUD sensor actuator
is working properly.
3. Clean the BUD sensor.
4. Firmly connect the connector.
5. Do a sensor test. Check for
approximately +5 V on pin 2 to
GND of connector CN106 as you
actuate the flag in the sensor.
Replace the actuator or sensor if
necessary.
6. Replace the BUD motor unit
(11G0251).
7. If you still have the problem,
replace the printer controller
board (11G0324).
1. Be sure connector CN133 is
properly connected to the
controller board.
2. Be sure the FUD sensor actuator
is working properly.
3. Do a sensor test. Check for
approximately +5 V on connector
CN133, pin 2 to GND as you
actuate the flag in the sensor.
4. Replace the FUD actuator sensor.
If the sensor is good, go to the
"Paper Exit FU/FD Service Check"
on page 2-34.
Diagnostic Information
2-7