Troubleshooting Using The Power-On-Self-Test (Post) - Intermec 6820 User Manual

Troubleshooting Using the Power-On-Self-Test (POST)

POST Error Codes
Long Short Paper
Beep Beep Out
0 1 Off
0 0 Off
0 0 Off
1 1 Off
1 2 Off
1 4 Off
1 4 Off
0 0 On
6820 Series 80-Column Printer User Manual
When you reset the printer, a POST runs to determine why the printer
might be failing. Audible error codes, along with indicator light
status, are produced during POST if an error occurs. See the POST
Error Codes table.
To perform a POST
1 Open the printer case.
2 Insert the printer diagnostic cable into the phone jack on the
printer and then connect the 9-pin D-sub plug to your PC. The
cable is used during POST to configure the printer, access printer
diagnostics, update software, and install new fonts.
3 Press the Reset button to start the POST. When the POST starts,
the power LED will come on followed by a single beep indicating
that the printer is active.
Note: After the test is completed, all LEDs turn off and the
printhead moves to the home position. Only runtime errors or
fatal errors are reported until the next time the printer is reset and
POST is performed.
The printer emits beeps and flashes the LEDs to indicate the cause of
any POST errors. POST error codes are described in the following
table.
Head Low
Jam Batt Power Meaning
Off Off On
Off Off Off
Off Off On
On Off On
On On On
Off Off On
Off On On
Off Off On
Chapter 5 — Troubleshooting and Maintaining the 6820
Operational
No Power
Control program Initial Program Load (IPL)
successful
Invalid CRC on boot block
Invalid CRC on control program or program not
found
Upper 192K RAM failure
Upper 64K RAM failure
Diagnostic mode command check
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