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Symptom
Parallel attachment printing problems
Poor quality shading patterns
Any print quality problem
Blank pages, double sheet feeds
Paper jams in the printer repeatedly
Cleared jam, printer does not work
Action
Make sure your printer driver is installed and connected to the correct port.
Also, make sure you use properly shielded and grounded cables and
connectors (IBM part number 63H1956 or its equivalent) that are no more
than ten feet (3 meters) in length.
Responses:
1. Make sure the QUALITY item in the Config Menu is set to REFINE. See
"Configuration (Config) Menu" on page 72. Also make sure your printer
driver or printer application specifies Edge Refinement. Values set in print
jobs (either by the print application or the printer driver) override values
you set at the printer.
2. Try increasing the print density if shading is too light. If shading is too
dark, try decreasing print density. See "Adjusting Print Density" on
page 22.
The quality of the printed output is not acceptable. Examples of unacceptable
output include light printing, streaks, splotches, random deletions, blank
pages, and so on. See "Appendix B. Print Quality Problems" on page 149 for
a quality-check procedure and samples of print quality problems.
Responses:
1. If all sheets are blank, the toner supply could be low without the toner
sensor detecting it. Replace the toner cartridge. See "Changing the Toner
Cartridge" on page 101 for instructions on removing and replacing the
toner cartridge.
2. Random blank pages during a print job can be caused by multiple sheets
of paper being fed through the machine simultaneously. Reload the paper
tray with fresh, dry paper. Fan the paper before loading it. If the problem
still exists with the new toner cartridge installed, consider replacing the
usage kit. See "Changing the Usage Kit" on page 104.
3. If you are using custom forms, make sure your application is setting the
correct margin. See "Loading Custom Paper and Envelopes into the
Auxiliary Tray" on page 40 for more information.
Responses:
1. Make sure that the paper tray guides are adjusted correctly for the size
paper you are using. In particular, make sure the rear guide rests lightly
against the back of the paper stack.
2. Do not refeed the same sheet of paper.
3. The paper you are using in the printer may not be compatible with your
printer. Verify that the paper you are using conforms to the specifications
for the printer. See "Selecting Paper and Other Printable Material" on
page 25.
4. Check for obstructions in the paper path. Obstructions may include paper
clips and corners of previously jammed paper.
5. Check the paper supply tray for damaged paper.
6. Reload the paper tray with fresh, dry paper. Fan the paper before loading
it.
7. For duplex jams, ensure that the duplex unit is installed correctly. See
"The Duplex Unit" on page 120.
Response: Open and close the top cover to reset the printer following a
paper jam.
Appendix A. Troubleshooting
147
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