EN Control panel messages 37
1
54.2 PRINTER ERROR
(continued)
Note
The printer CANNOT operate with the top cover removed unless the
carousel brake has been released or removed.
2 Verify the carousel drive motor wiring harness is firmly seated into
connector J203 of the developing PCB.
3 Verify PS10 is working correctly and not excessively dirty (clean if
necessary) and that the wiring harness is firmly seated into both
the sensor assembly and connector J206 of the developing PCB.
4 Verify PS11 is connected and functioning properly.
5 Verify all connectors to the developing PCB and the DC controller
PCB are firmly seated.
6 Verify that the rotary drive assembly is working. Replace it on older
units with more than 50K of life.
The following URL provides help with cartridge installation and
removal: http://www.hp.com/go/ljsupplies
.
54.3 PRINTER ERROR
The printer is NOT receiving data back from the density sensor
(PS14). PS14 is located in the bottom of the imaging drum drawer.
During calibration routines, a series of images are written on the
imaging drum and the densitometer measures the density of the image
(e.g. amount of toner that is placed into the drum). These
measurements provide the feedback to ensure image quality is
consistent throughout the life of the consumable.
1 Verify the densitometer is clean; perform the toner density sensor
cleaning procedure in Chapter 7 of the online user guide.
2 Inspect the density sensor wiring harness for damage. The
harness runs from the density sensor through the left-side upper
(continued on next page)
54.3 PRINTER ERROR
(continued)
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