Lexmark 3200 Service Manual page 37

3.1.1.15 Reading position deviation
Cause
Power supply-main
control board
connection failure
Power supply fails
Motor- main
control PCBA
connection failure
Motor failure
Home position
sensor board-
main control PCBA
cable failure
Home position
sensor board-
main control PCBA
cable failure
Home position
sensor board
failure
# Refer to section 4.6.
3.1.1.16 Image unclear
Cause
Lamp too dark
Dirt on calibration
reference plate
Dirt on calibration
reference plate
Dirt on the mirrors
Dirt on the lens
Relevant Unit Check Method
None Visual check
Power supply Tester check (+5V,
+24V, GND)
None Visual check
Motor Visual check
None Visual check
Sensor board- Tester or visual
main control PCBA check
cable
Sensor board Tester check
Relevant Unit Check Method
Lamp Visual check
Calibration Visual check
reference plate
Calibration Visual check
reference plate
Mirrors Visual check
Lens Visual check
Table 3.10
Maintenance
Method
Connect the
connector.
Replace the power
# supply.
Connect the
connector.
Replace the motor
Connect the
connector
Replace the home
position sensor
cable
Replace the PCBA.
Table 3.9
Maintenance Method
Replace with a new
lamp.
Clean the flatbed glass
with isopropyl alcohol.
Clean the calibration
reference plate with
isopropyl alcohol.
Clean the mirrors with
isopropyl alcohol.
Clean the lens with
isopropyl alcohol.
3-15
Remark
None
None
None
None
None
None
None
Remark
None
None
None
None
None