4.
Make sure that the registration assembly shutter is properly functioning. Replace the registration
assembly if necessary.
5.
Use the Components tests to activate the pickup motor and the pickup solenoid/clutch (listen for
the motor/solenoid to rotate/move) for the source tray. If the motor or solenoid are not properly
functioning, replace the motor or solenoid.
6.
Use the Manual sensor tests to toggle the TOP sensor (SR9). If the sensor is not properly
functioning, replace the high-voltage power supply.
7.
Inspect the connector (J62) on the DC controller PCA, and connector (J901) on the high-voltage
power supply.
8.
Use the Components tests to activate the drum motor (listen for the motor to rotate). If the motor is
not properly functioning, replace the main drive assembly.
13.B2.FF Jam in top cover area
Description
TOP sensor (SR9) residual jam. This jam occurs when paper exists at any of the paper path jam sensors
when the product power is turned on or after a jam re-evaluation.
Recommended action
1.
Open the top cover, and then remove the toner cartridge.
Remove any jammed paper, and then close the top cover.
2.
Use the Manual sensor tests to toggle the TOP sensor (SR9). If the sensor is not properly
functioning, replace the high-voltage power supply.
3.
Inspect the connector (J62) on the DC controller PCA, and connector (J901) on the high-voltage
power supply.
13.B4.FF Jam in top cover area
Description
Loop sensor (SR6) residual jam. This jam occurs when paper exists at any of the paper path jam
sensors when the product power is turned on or after a jam re-evaluation.
Recommended action
1.
Open the top cover, and then remove the toner cartridge.
Remove any jammed paper, and then close the top cover.
2.
Inspect the connector (J62) on the DC controller PCA, and connector (J901) on the high-voltage
power supply.
3.
Use the Manual sensor tests to toggle the loop sensor (SR6). If the sensor or lever are not properly
functioning, replace the high-voltage power supply.
314
Chapter 2 Solve problems
ENWW
Summary of Contents for LASERJET ENTERPRISE MFP M725dn
Page 1: ...LASERJET ENTERPRISE MFP M725 Troubleshooting Manual M725z M725dn M725f M725z ...
Page 2: ......
Page 3: ...HP LaserJet Enterprise MFP M725 Troubleshooting Manual ...
Page 6: ...iv Conventions used in this guide ENWW ...
Page 32: ...xxx ENWW ...
Page 142: ...110 Chapter 1 Theory of operation ENWW ...
Page 457: ...4 Close the fuser jam access cover 5 Close the fuser door ENWW Clear jams 425 ...
Page 475: ...1 Lift the document feeder latch 2 Open the document feeder cover ENWW Clean the product 443 ...
Page 516: ...484 Appendix A Service and support ENWW ...
Page 545: ......
Page 546: ... 2013 Hewlett Packard Development Company L P www hp com CF066 91023 CF066 91023 CF066 91023 ...