Lexmark Optra Color 1200 Service Manual page 50

5050-001
Message
983 Gear Sensor
Abnormal Gear Sensor
(Color/Black)
984 Gear Sensor
Abnormal Drum Gear
Sensor (Yellow/Black)
Thermistor Error
985
Belt Thermistor Open
OHP Sensor Error
986
2-8
Service Manual
1. Be sure CN123 and CN126 are
properly connected to the printer
controller board.
2. Clean the gear/drum sensor.
3. Replace the drum drive gear
sensor 11G0581).
If you still have the problem, go to
the "Drive 1 DC Motor Service
Check" on page
1. Be sure CN125 and CN127 are
properly connected to the printer
controller board.
2. Clean the gear/drum sensor.
3. Replace the drum gear sensor
(11G0581).
4. If you still have the problem, go to
the "Drive 1 DC Motor Service
Check" on page
1. Be sure the thermistor connector
under the transfer guide is
properly connected. Also be sure
CN107 is properly connected to
the printer controller board.
2. Unplug the connector and check
for 10K ohms conductance of the
belt thermistor.
3. Replace the belt unit (11G0202).
4. If you still have the problem,
replace the printer controller
board (11G0324).
1. Be sure connector CN132 is
properly connected to the printer
controller board.
2. Replace the OHP sensor.
3. If you still have a problem, replace
printer controller EEPROM U107.
4. If you still have a problem, replace
the printer controller board.
2-28.
2-28.