Yy Error To Continue Turn Off Then On; Error; Environmental Sensor Malfunction - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Laserjet enterprise mfp m725
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56.00.YY Error To continue turn off then on

Description
The product experienced a communication error with the optional paper tray.
56.00.01 (event code): Illegal input, selected paper input tray is unavailable
56.00.02 (event code): Illegal output, selected paper output bin is unavailable
Recommended action
1.
Turn the product off and then on.
2.
Reseat the optional paper tray.
3.
Check the input connectors for damage. If a connector is damaged, replace the connector.
4.
Remove any third-party hardware.
5.
Upgrade the firmware.
6.
If the error persists, replace the DC controller.
57.00.0X Error
Description
A fan error has occurred.
Recommended action
57.00.01: Fan motor 1 (rear) malfunction
1.
Turn the product off and then on. Listen for fan noise at the rear of the product. If no noise is
heard, replace the power supply fan (FM1).
2.
If this part has been removed or replaced, check the connector (J33) on the DC controller PCA.
57.00.02: Fan motor 2 (front) malfunction
1.
Turn the product off and then on. Listen for fan noise at the front of the product. If no noise is
heard, replace the toner cartridge fan (FM2).
2.
If this part has been removed or replaced, check the connector (J37) on the DC controller.
57.00.03: Fan motor 3 (fuser) malfunction
1.
Turn the product off and then on. Listen for fan noise at the lower back-center of the product. If no
noise is heard, replace the fuser fan (FM3).
2.
If this part has been removed or replaced, check the connector J37 on the DCC.

58.00.02 environmental sensor malfunction

Description
The product has experienced an environmental sensor error.
356
Chapter 2 Solve problems
ENWW

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