Troubleshooting
Image Formation Troubleshooting
Table 7.28
Background Scatter
POSSIBLE CAUSE
RECOMMENDED ACTION
,0
1. Bad Media. The moisture content, con- Try a different media (see “Paper
ductivity or surface finish may not work Specifications” in Chapter 2).
correctly with the electrophotographic
yrocess.
2. Inside of printer is dirty (toner may
Clean inside of printer (see Chapter 4).
have leaked out of the toner cartridge). Install a new toner
cartridge if leaking.
3. Printing on envelope seams. Printing
Move the text to an area without seams,
on an envelope seam can cause a back- If not printing on seams, try a higher print
ground scatter problem,
density setting (see item 6, below).
4. Defective toner carlridcie. Install a new toner cartridge.
5. Dirty or worn Transfer Roller, A worn
Clean the Transfer Roller using a dry, lint-
Transfer Roller can cause background
free cloth. DO NOT touch the Transfer
due to improper bias voltages.
Roller with your fingers.
If the problem persists, replace the
Transfer Roller Assembly.
6. Print Density set too low. If the Print
Adjust the print density to a higher
Density is set too low, then background setting through software, through the
scatter can result, particularly with
Print Quality menu of the HP Explorer
envelopes and heavier papers.
Remote Control Panel, or through the
front control panel (LaserJet 4P/4MP).
Table 7-29
Bottom Portion of Page Blank
POSSIBLE CAUSE
1. Page too complex. The printer can not
create the image fast enough to keep
pace with the print engine,
2. Not enough memory. The page is too
complex for standard printer memory.
3. Printing on legal-size paper when soft-
ware is specifying letter size. (This will
also cause paper jams,)
RECOMMENDED ACTION
Set Page Protect to ON or AUTO
,through the HP Explorer Remote Control
Add printer memory. As an alternative,
~simplify the print iob.
Review software selection. Ensure that
printing is on selected size.
7-32
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