HP Laserjet 5 User Manual

Repeated Paper Jams
Situation Solution
General repeated paper jam
problems.1.
2.
3.
4.
5.Check to see that media is correctly loaded in the trays
(see Chapter 4).
Previously printed paper or torn, worn, or irregular
paper should not be used.
Certain types of media jam more than others. See
Appendix A, “Media Specifications.”
Try turning over the stack of paper in the tray.
Parts may be worn. See Chapter 8, “User-
Replaceable Parts.”
Tray 1 has repeated jams. If jams persist after you have cleaned the...

Resetting the Printer
Reset the printer with caution. You can lose buffered page data or
printer configuration data when you reset. Only use it in the following
circumstances:
•You want to restore the default printer settings.
•Communication between the printer and computer is interrupted.
•You are using both the serial and parallel I/O ports, and one of the
ports is having problems.
Four different resets are available through the RESETS MENUon the
control panel.  Each reset will affect different...

Testing the Printer
Self Tests
Self tests can be printed to determine the current printer settings,
options, and print quality.  (If PostScript is installed, you can also print
PostScript tests. See Chapter 5 for more information.)
You can review the self test printout to verify proper installation of such
options as memory SIMMs, paper trays, and personalities. You can also
use the self test printout to view current print density and Resolution
Enhancement settings and harmonize them.
To print a test...

Understanding the Self Test Printout
Figure 7-2 is a sample self test printout of the HP LaserJet 5.  Letters in
the sample printout match the letters in the following table. The
appearance of the self test printout will vary for the HP LaserJet 5M. It
will also vary depending on the options currently installed in your
printer.
Item Key to Figure 7-2A
Printer Information: Lists the Formatter Number, Firmware Datecode, and Page Count for the printer.
BMemory:Lists printer memory, I/O Buffering data, and...

Figure 7-2Self Test Printout
7
Solving Printer
Problems
7
Solving Printer
Problems
ENSolving Printer Problems 7-13 

Checking Installed PCL Fonts
Your HP LaserJet printer comes with 45 scalable fonts and one
bitmapped Line Printer font. You can find out which PCL fonts are
currently installed in your printer by printing a PCL font list.  (If you
have PostScript installed you can also print a PostScript font list.  See
Chapter 5 for more information.)
The font list printout shows only permanent soft fonts. Permanent soft
fonts are downloaded soft fonts that stay resident in the printer until you
download other fonts to...

Figure 7-3PCL Font List
7
Solving Printer
Problems
7
Solving Printer
Problems
ENSolving Printer Problems 7-15 

Improving Print Quality
General print quality problems can be solved by following the checklist
below. Following the checklist are specific samples of common print
quality problems.  If the listed solutions do not work, see the “HP
Support” pages at the front of this manual for additional sources of
assistance.
Print Quality Checklist
•Redistribute the toner in the toner cartridge (see Chapter 8).
•Clean the inside of the printer (see Chapter 8).
•Adjust the print density (see Chapter 6).
•Check the...

Vertical Lines
If sharp black vertical streaks appear on the page, the photosensitive
drum inside the toner cartridge has probably been scratched. Replace
the toner cartridge.
If smeared black vertical streaks appear, the fuser may be bad.
Inspect the rollers for scratches and excessive wear and, if necessary,
replace the fusing assembly as described in “User-Replaceable Parts”
in Chapter 8.
Toner Smear
If toner smears appear on the leading edge of the paper, the paper
guides are dirty. Clean the...

Vertical Repetitive Defects
If marks repeatedly appear on the printed side of the page:
•The toner cartridge is damaged. The circumference of the toner
cartridge drum is 3 3/4 inches (95 mm). If a repetitive mark occurs
every 3 3/4 inches (95 mm) on the page, replace the toner cartridge.
•The developer roller is defective. If a repetitive mark occurs every 2
inches (51 mm) on the page, replace the toner cartridge.
•The charger roller in the toner cartridge is defective. If a horizontal
black line occurs...