Printronix L1024, Maintenance Manual

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13–14 Chapter 13 – Troubleshooting Guide
331. This is caused by a defect or toner buildup on the fuser roller.
a. Clean or replace the fuser roller/fuser assembly.
340. Black or white spot at a 5 inch interval.
341. The OPC drum has a scratch or nick on it.
a. Replace the OPC drum unit.
342. There is toner buildup on the OPC drum where the guide roller of the developer contacts
the OPC drum.
a. Check for toner buildup on the OPC drum. Clean the toner from the drum. This will be
located on the outside ends of the drum where there is no green coating.
b. Replace the OPC drum unit.
343. The OPC drum has an area on it that has poor electrical characteristics.
a. Replace the OPC drum unit.
350. Wavy image at the far right side of the printed page.
351. The phase-locked loop (PLL) of the LSU polygon motor is not staying locked.
This results in the speed of the polygon motor changing, which causes the length of a printed
line to change. If this becomes severe, an “LSU FAIL” error will occur.
a. Replace the LSU.
352. The polygon is not attached securely to the polygon motor spindle.
a. The LSU must be replaced. The adhesive that holds the polygon mirror to the spindle
is defective.
360. Black or white horizontal streaks at 1.5 inch intervals.
361. The inner transfer gear has broken where it attaches to the main drive gear. This is in the
developer gear assembly.
a. Replace the inner transfer gear.
400. Image Errors Occurring At The Same Place On Each Page.
410. Fine vertical lines at 1.5 inches from the perforation at the top of the page.
This occurs when the printer has been inactive for some period of time.
411. The silicon/toner on the fuser wiper migrates from the wiper onto the fuser roller and
paper. This occurs when the fuser wiper is saturated with toner.
a. Replace the fuser wiper.
b. Replace the fuser roller if it is damaged.
420. Gray or black horizontal line at the perforation on the first page of a print job.