Drum rotation test check
NOTE:
This test is especially important if refilled toner cartridges are in use.
The photosensitive drum, which is located in the toner cartridge, must rotate in order for the print
process to work. The photosensitive drum receives its drive from the main gear assembly. Use this
procedure to determine whether the drum is rotating.
1.
Open the cartridge door.
2.
Remove the toner cartridge.
3.
Mark the cartridge drive gear with a felt-tipped marker. Note the position of the mark.
4.
Install the toner cartridge, and then close the cartridge door. The start-up sequence should rotate
the drum enough to move the mark on the gear.
5.
Open the product and inspect the mark on the cartridge drive gear.
Verify that the mark moved. If there was no movement, inspect the main gear assembly to make
sure that it connects with the toner-cartridge gears. If the drive gears function, but the drum does
not move, replace the toner cartridge.
Component test (special-mode test)
This test activates individual parts independently to isolate problems.
Each component test can be performed once or repeatedly. If you turn on the
Repeat
option from the
drop-down menu, the test cycles the component on and off. This process continues for two minutes, and
then the test terminates.
1.
From the Home screen on the product control panel, scroll to and touch the
Administration
button.
2.
Open the following menus:
●
Troubleshooting
●
Diagnostic Tests
●
Component Test
3.
Select the component test options for the test you want to run.
Table 2-12
Component tests
Component test
Item
Control-panel display
message
Description
Main motor test
M8001
Drum Motor
Activates the main motor for 10 seconds.
Fuser motor test
M8002
Fuser Motor
Activates the fuser motor for 10 seconds.
Tray 1 (multipurpose tray)
pickup solenoid test
SL1
Tray 1 Pickup Solenoid
Activates the Tray 1 pickup solenoid for 10
seconds.
Tray 2 pickup solenoid test
SL2
Tray 2 Pickup Solenoid
Activates the Tray 2 cassette pickup solenoid
for 10 seconds.
ENWW
Tools for troubleshooting
185
Summary of Contents for LASERJET ENTERPRISE MFP M725dn
Page 1: ...LASERJET ENTERPRISE MFP M725 Troubleshooting Manual M725z M725dn M725f M725z ...
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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 ...
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