Printronix L1024, Maintenance Manual

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13–16 Chapter 13 – Troubleshooting Guide
a. The developer unit is not locked down. Verify that the developer lock down hooks are
properly engaged. There is usually excessive gear noise or grinding noise when the
developer is not locked down.
b. There is toner buildup on the developer guide roller or on the OPC drum where the
guide roller meets the OPC drum. Clean the toner buildup from the appropriate area.
452. The printer is being operated with low toner.
a. Install a new toner cartridge on the developer unit.
b. If the toner no longer adheres to the developer sleeve or the print is still light, replace
the developer.
Prolonged operation of the developer with low toner depletes the carrier at a faster rate than
normal. The developer will no longer be able to print 100,000 pages.
453. The paper is skewing as it enters the printer.
a. Make sure the paper source is properly aligned with the printer so that the paper is not
skewing as it enters the printer.
454. The main drive gear for the developer gear assembly is broken.
This causes the developer sleeve to slip and not rotate properly. This can be checked by
manually removing an area of toner from the developer sleeve. Operate the printer for a
couple of pages, then check the sleeve. The sleeve should no longer have the area of no toner
on it. If the area of no toner is still present, the developer main drive gear is broken and the
developer sleeve is not turning.
a. Verify that the gear is broken and replace it with a gear that has been reinforced with
ribs. If the gear is not broken, but does not have reinforcing ribs, it should be replaced
with a gear that has been reinforced with ribs.
500. Image errors over a large area of the page.
Note that it is very important to follow the isolation procedure described at the start of this
guide. There are a number of different causes for these failures, and troubleshooting is much
easier if the isolation procedure is followed.
510. No print (blank page).
Follow the steps below if there is a developed image on the OPC drum:
511. The transfer charger is not rising into position.
a. Make sure the engagement lever is not binding on the transfer charger. Make sure the
lever moves freely.
b. Make sure the engagement lever roller is properly seated on the engagement cam
lever of the fuser.
c. The transfer solenoid is not engaging correctly. Check to make sure the signal to
release the solenoid is being sent from the L.V.P.S.
1. If the signal is present, replace the transfer solenoid.