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Problem Solving 2-9
4036-304
Scan module does not move to the home position
Cause
Relevant
Unit
Check Action
Home
position
sensor board-
main control
PCBA
connection
failure
None Visual check Connect the
connector.
Home
position
sensor board
failure
Sensor in the
flatbed CCD
assembly
Tester check Replace the
flatbed CCD
optical unit.
Power supply-
main control
board
connection
failure
None Visual check Connect the
connector.
Power supply
fails
Power supply Tester check
(+5V, +24V,
GND)
Replace the
power supply.
Lamp failure Lamp Visual check Replace the
flatbed CCD
optical unit.
Inverter
failure
Inverter Visual check Replace the
flatbed CCD
optical unit.
CCD board-
main scanner
board
connection
failure
None Visual check Connect the
connector.
CCD board
fails
CCD board Tester check Replace the
flatbed CCD
optical unit.