User's Manual

Troubleshooting and Diagnostics
Chapter
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7
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6820 Series 80-Column Printer User’s Manual
Miscellaneous Troubleshooting Tips
The following table lists actual printing problems, possible causes, and ac-
tions you should take to correct a problem.
Possible Printer Problems
Symptom Test or Cause Solution
Printer does not communicate
with the mobile computer.
S Incorrect protocol selection. Check
lines 17 and 18 on the self-test report for
correct bit rate and protocol selection.
S Bluetooth Unable to connect.
Change protocol settings through config-
uration process.
S Make sure you are in range (10cm to
10m)
S Make sure your device is configured to
be discoverable and/or connectable (see
Appendix A, “Bluetooth Configuration
Commands”)
S Make sure the Bluetooth shutdown tim-
er has not expired
Double-spacing on application
reports but single-spacing on
self-test.
Check line 16 on the self-test report, if
“CR+LF” then this is an incorrect con-
figuration for NPCP.
See page 32 for instruc tions.
Zero prints incorrectly (with/
without slash).
Check line 15 on the self-test report for
“Zero Font Style” setting.
If incorrect, adjust the zero print option,
see page 33 for instructions.
Does not print extended char-
acter set — missing font.
Checkline11or12ontheself-testre-
port to see if the “NFT0000.MOD” file
is listed after “Font Module.”
Use the 6820 Printer Tool Kit to reload
this file or send for hardware repair.
Printer emits 1 or 2 beeps or
blinking green light is the only
indicator.
Printer mechanism does not have ade-
quate power for printing. The 12 V may
be under or over voltage fault. (Note: Er-
ror lights do not flash if voltage is too high)
Check battery or power supply.
S If battery, recharge or replace (see page
15 for instructions).
S If power supply, adjust supply voltage
to 7.5–15 volts.
Check the printer’s internal battery, if
installed. Check the vehicle charge cable
(see the 6820 Printer Installation Instruc-
tions P/N: 962-018-016).
Printer emits 2 sets of 3 beeps Printer out of paper Reload paper into printer mechanism.
See page 18 for instruc tions.
Printer works but some or all
LEDs do not work.
Gray ribbon cable connecting c ontrol
panel board to pivot frame assembly is
loose.
Call Customer Support (800-755-5505)
or send printer for hardware repair.
Printer does not print S No voltage
S Voltage too high or low. Check line 13
on the self -test report, under the “Battery
Voltage” header.
S No data input
Adjust supply voltage to 7.5–15 volts.
Tighten computer connections.