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 printer, check the media specifications and verify that you are loading the tray
correctly (see Chapter 4). You may need to replace the
Tray 1 Pickup Roller as described in Chapter 8.
Tray 2 has repeated jams. If jams persist after you have cleaned the printer, check the media specifications and verify that you are loading the tray
correctly (see Chapter 4). You may need to replace the
Tray 2 Pickup Roller as described in Chapter 8. If using
the universal (adjustable) tray, verify that the paper size
knob and other adjustments are set correctly and that the
tray is not overloaded.
Tray 3 has repeated jams. Adjust the tray as described in Chapter 4. Verify that the paper size, paper width guide, paper length guide, tension,
and other adjustments are set correctly and that the tray is
not overloaded. Verify Tray 3 is not filled above the arrows
in the middle of the paper length bracket. If it is overfilled,
remove any excess media. If two or more pieces of media
are being selected at once, it may help to decrease the
tension (turn the adjustment clockwise). If media is not
being picked from the tray, increase the tension (turn the
adjustment counterclockwise).
Labels or transparencies jam. The media may be sticking together. Try fanning the media to separate each sheet. If this does not solve the problem,
print each sheet separately from Tray 1. (See Chapter 4
for printing instructions for labels and transparencies.)
Envelope jams Try stacking less envelopes in Tray 1 or try feeding one envelope at a time.
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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 settings for the printer.
Reset Action
Memory Reset Clears memory
Factory Default Resets menus to defaults
Active I/O Reset Resets Active I/O Port
All I/O Reset Resets all I/O Ports
See the “Resets Menu” in Chapter 3 for further details on each reset.
To activate a printer reset:
1Press [Menu] untilRESETS MENU appears.
2Press[Item] until the desired reset is displayed.
3Press[Select] to activate the reset.
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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 page:
1Press[Menu] untilTEST MENU appears.
2Press[Item] untilPRINT SELF TEST is displayed.
3Press[Select] to print the test.
NoteIf you select CONT SELF TEST , the printer prints self test pages
continuously until you press [Job Cancel].  Several more pages may
print until the buffer clears.
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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 Resource Saving data
CInstalled Personalities and Options: Lists all personalities such as PCL and PostScript that are installed,
the status of each SIMM slot, and other installed options such as the IR Adapter and the Flash SIMM.
DPaper Trays and Options: Lists all optional input trays that are installed including 500-sheet Tray 3, the
Duplex Unit, and the envelope feeder. This item also lists any configured settings for the Trays.
ESecurity: Lists the status of the Control Panel Lock, Control Panel Password, and Flash Write Protect.
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Figure 7-2Self Test Printout
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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 replace them, or until you turn the printer off.
To print a PCL Font List:
1Press[Menu] untilPCL FONTS MENU appears.
2Press[Item] untilPCL FONT LIST is displayed.
3Press[Select] to print the list.
Understanding the PCL Font List Printout
Figure 7-3 is the first page of a sample PCL Typeface List. Letters in the
sample font list match numbers in the key to Figure 7-3 shown below.
See Appendix B, “Common PCL Printer Commands,” for step-by-step
instructions on using printer commands to select a font in DOS
applications.
Item Key to Figure 7-3
AFontis the name of the font.
B Pitch/Point indicates the specified pitch or point size of the font. “Scale” indicates a scalable font.
C Escape Sequence (a PCL programming command) is used to select the designated font.
D Font # is the number you use to select internal, or downloaded soft fonts from the control panel. (Do not
confuse the font
numberwith the soft fontID, described next.) The letter preceding the font number shows the
source of the font (I isInternal,SisPermanentsoft font, and Slot isSIMM(slot number follows)).
E Font ID is the number
you assignto soft fonts when you download them through your software.
F Escape Sequence Legend
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Figure 7-3PCL Font List
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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 paper type and quality (see Appendix A).
•Adjust resolution for the type of document you are printing (see
Chapter 6).
•Replace the toner cartridge, then check print quality again.
•Check to make sure EconoMode is off (see “EconoMode Printing” in
Chapter 6).
Vertical Fade
If a vertical white streak or faded area appears on the page:
•The toner supply is low. See “Extending Toner Cartridge Life” in
Chapter 8. If this does not improve the print quality, replace the
toner cartridge.
•The print density adjustment is too light. Adjust the print density from
the control panel (1 is light; 5 is dark). (See “Adjusting Print Density”
in Chapter 6.)
Dropouts
If faded-out areas, generally rounded, occur randomly on the page:
•The moisture content of the paper is uneven, or the paper has moist
spots on its surface. Try paper from a different source.
•The paper lot is bad. The manufacturing processes can cause some
areas to reject toner. Try a different kind or brand of paper.
•The transfer roller is dirty. Replace the transfer roller (see
“User-Replaceable Parts” in Chapter 8).
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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 printer as described in “Cleaning the
Printer” in Chapter 8.
If toner on the paper is loose or can be wiped off easily, your fuser may
be damaged. See an HP authorized dealer or service representative.
Background Gray Toner Shading
If the amount of background toner shading becomes unacceptable, the
procedures described below may help to clear the condition:
•Increasethe density setting (see “Adjusting Print Density” in
Chapter 6). This will
decreasethe amount of background shading.
•Change the paper to a lighter basis weight.
•Check the printer’s environment; very dry (low humidity) conditions
can increase the amount of background shading.
•Replace the toner cartridge.
•Replace the transfer roller (see “User-Replaceable Parts” in
Chapter 8).
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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 every 1 1/2 inches (38 mm), replace the toner
cartridge.
•The transfer roller has toner on it. If the defects occur every 2 1/16
inches (53 mm) on the back of the page, the problem will likely
correct itself after a few more pages.
Improperly Formed Characters
If characters are improperly formed, producing hollow characters, your
paper stock may be too slick. Try a different paper.
If characters are improperly formed, producing a wavy effect, the laser
scanner needs service. Call your authorized HP dealer or HP service
representative.
Vertical Line at Edge of Paper
If a vertical line appears on the page’s margin (usually the right
margin) after printing about 10,000 pages, the drum in your toner
cartridge is wearing out. The line will grow wider, with cross-hatching.
Replace the toner cartridge.
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