HP LASERJET ENTERPRISE M725dn Troubleshooting Manual page 361

Laserjet enterprise mfp m725
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30.03.30
Description
The scanner control board cannot communicate with the flatbed scanner motor.
Recommended action
1.
Turn the product off, and then on. As the product turns on, verify the scan head moves.
2.
Verify the drive belt is in the correct position.
3.
Check for a red LED illuminated on the scanner motor.
4.
Check the cable connection to scanner control board.
5.
Replace the scanner.
30.03.45
Description
Scanner control board (SCB) firmware assertion failure. SCB firmware assert controls the scan head
motor.
Recommended action
1.
Turn the product off, and then on.
2.
Upgrade the firmware.
3.
Replace the scanner control board.
4.
Replace the scanner assembly.
31.01.47
Description
The document feeder was not detected. The cable might not be attached.
Recommended action
1.
Turn the product off, and then on.
2.
Check the cables between the document feeder and scanner control board.
3.
Upgrade the firmware.
4.
Replace the document feeder.
31.03.30
Description
The document feeder pick motor is not turning.
ENWW
Tools for troubleshooting
329

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