D1.Ff Jam In Left Door; D3.00 Jam In Top Cover Area - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Laserjet enterprise mfp m725
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X indicates the fuser mode
2 = Normal
3 = Light media 1
3 = Light media 2
4 = Heavy media 1
5 = Heavy media 2
B = Transparency
D = Envelope 1
D = Envelope 2
Recommended action
1.
Open the left door, remove any jammed paper, and then close the left door.
2.
Check the paper path and rollers at the fuser and duplexer for damage. Replace the fuser or
duplexer if necessary.
3.
Use the Manual sensor tests to toggle the duplexer switchback sensor (SR1DU). If the sensor or
lever are not properly functioning, replace the duplexer.
4.
Use the Components tests to activate the duplex feed motor (listen for the motor to rotate). If the
motor is not properly functioning, replace the duplexer.

13.D1.FF Jam in left door

Description
Duplexer switchback sensor jam. This jam occurs when paper exists at any of the paper path jam
sensors at power on or after jam re-evaluation.
Recommended action
1.
Open the left door, and clear any jammed paper. Close the left door.
2.
Remove duplexer, and clear any jammed paper. Reinstall the duplexer.
3.
Make sure duplexer is seated properly.
4.
Run the Manual Sensor test and toggle the duplexer switchback sensor (SR1DU).
5.
If the duplexer switchback sensor or lever not operating properly replace the duplexer.

13.D3.00 Jam in top cover area

Description
This is a firmware timing issue and not a mechanical jam problem.
Late to duplex exit jam. The engine cannot pause long sheets in the duplex path.
318
Chapter 2 Solve problems
ENWW

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