User Guide

Table 7-33 Smudged lines (either direction)
Possible cause Recommended action(s)
A
A
A
A
A
B
B
B
B
B
C
C
C
C
C
a
a
a
a
a
c
c
c
c
c
b
b
b
b
b
The paper path is contaminated or
damaged.
1 Perform the half self-test functional
check. See
Half self-test functional
check. If the drum is damaged,
replace the print cartridge.
2 Process a printer cleaning page.
See
Running the cleaning page
manually. If the problem persists,
replace the fuser. See
Fuser.
3 Check the tray 1 feed roller and the
rollers in the other trays. Clean or
replace the rollers as necessary.
4 Check for other sources of
contamination or damage in the
paper path and clean or replace
parts as necessary.
This type of defect might also be a
repetitive defect. See
Repetitive-
defects troubleshooting.
The print cartridge has passed its life
expectancy.
The print cartridge has an expected life
of 12,000 pages for the
HP LaserJet 4200 printer and
18,000 pages for the HP LaserJet 4300
printer. Replace the print cartridge.
Table 7-34 White spots on black
Possible cause Recommended action(s)
The media does not meet
specifications or is not stored correctly.
1 Turn over the stack of media in the
tray. Also try rotating the media
180°.
2 Check the media for type and
quality. Replace the media if it
does not meet specifications, and
advise the customer to use the HP-
recommended media and to store
it correctly. See
Media
specifications.
The operating environment does not
meet specifications.
Make sure that the printer is installed in
an area that meets the environmental
specifications. See Operating
environment.
The print cartridge is defective. Replace the print cartridge.
396 7 Troubleshooting