Lexmark 16C0365 Service Manual - Page 21

Scan module does not move to the home position

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4036-402 Scan module does not move to the home position Cause Relevant unit Home position sensor- None main scanner card connection failure Home position sensor failure Sensor in the flatbed optical unit Power supply-main None scanner card connection failure Power supply fails Power supply Lamp failure Inverter failure Flatbed optical unit- main scanner card connection failure CCD card fails Lamp Inverter None Flatbed optical unit Check Visual check Action Connect the connector. Visual check Visual check Replace the flatbed optical unit. Connect the connector. Test LVPS (+5V, +24V, GND) Visual check Visual check Visual check Replace the power supply. Replace the flatbed lamp. Replace the flatbed lamp inverter. Connect the connector. Visual check Replace the flatbed optical unit. Scan module does not move to the flatbed position Cause Relevant unit Power supply.--main scanner card connection failure Power supply fails None Power supply Motor-main scanner card connection failure Motor failure Belt broken or loose None Carrier motor Carrier belt Check Visual check Action Connect the connector. Test LVPS (+5V, +24V, GND) Visual check Replace the power supply. Connect the connector. Visual check Visual check Replace the flatbed optical unit. Reposition belt or replace if defective. System hangs while booting or displays erratic behavior Cause Relevant unit Corrupt software on hard Hard disk drive disk drive Check Visual check Action Refresh the hard disk drive software. See "Hard disk drive refresh" on page 3-4. Diagnostic information 2-7

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Diagnostic information
2-7
4036-402
Scan module does not move to the home position
Scan module does not move to the flatbed position
System hangs while booting or displays erratic behavior
Cause
Relevant unit
Check
Action
Home position sensor—
main scanner card
connection failure
None
Visual check
Connect the connector.
Home position sensor
failure
Sensor in the flatbed
optical unit
Visual check
Replace the flatbed optical unit.
Power supply—main
scanner card connection
failure
None
Visual check
Connect the connector.
Power supply fails
Power supply
Test LVPS (+5V,
+24V, GND)
Replace the power supply.
Lamp failure
Lamp
Visual check
Replace the flatbed lamp.
Inverter failure
Inverter
Visual check
Replace the flatbed lamp inverter.
Flatbed optical unit—
main scanner card
connection failure
None
Visual check
Connect the connector.
CCD card fails
Flatbed optical unit
Visual check
Replace the flatbed optical unit.
Cause
Relevant unit
Check
Action
Power supply.—-main
scanner card connection
failure
None
Visual check
Connect the connector.
Power supply fails
Power supply
Test LVPS (+5V,
+24V, GND)
Replace the power supply.
Motor—main scanner
card connection failure
None
Visual check
Connect the connector.
Motor failure
Carrier motor
Visual check
Replace the flatbed optical unit.
Belt broken or loose
Carrier belt
Visual check
Reposition belt or replace if
defective.
Cause
Relevant unit
Check
Action
Corrupt software on hard
disk drive
Hard disk drive
Visual check
Refresh the hard disk drive
software. See
“Hard disk drive
refresh” on page 3-4
.