Fatal Errors - Intermec 6820 Series User Manual

POST Error Codes
Long Short PAPER
Beep Beep OUT
0 1 OFF
0 0 OFF
0 0 OFF
0 0 ON
0 0 ON
1 1 OFF
1 2 OFF
1 4 OFF
1 4 OFF
1 5 ON
1 5 ON
6820 Series 80-Column Printer User's Manual
During the course of POST, the other LEDs light to indicate progress
throughout the tests. If a POST failure is detected, the printer emits one of
the following printer LED error codes and beep sequences.
HEAD LOW
JAM BATT Power
OFF OFF ON
OFF OFF OFF
OFF OFF ON
OFF OFF ON
ON ON ON
ON OFF ON
ON ON ON
OFF OFF ON
OFF ON ON
OFF ON ON
ON OFF ON
After completion of the tests, all LEDs are turned off and there is an at-
tempt to place the head in the home position. Until the next time the
printer is reset and POST is performed, only run-time errors or fatal errors
are reported.

Fatal Errors

Two types of fatal errors exist: Flash Write Errors and Printer Configura-
tion Block Errors. These errors are extremely rare, but measures are built
into the printer diagnostics to track possible occurrences.
Flash Errors
Errors related to writing or erasing flash are critical errors. These critical
errors cause the printer to stop all processing and output an LED code and
a sequence of beeps. The LED code represents the address of the segment
that the error occurred on in octal notation. The octal digit changes every
four beeps until four octal digits have been output. Only four octal digits
are output since blocks are 256 bytes in size and flash can be addressed
with a total of 0x7ff blocks. Note that the segment address output is the
runtime address of the flash block and not the offset of the block within
flash. To obtain the block offset within the flash, subtract 0x800 from the
address output.
After the error code is processed, the printer enters suspend state. When
the printer resumes, the error again is output and suspend reentered. A re-
set is required to eliminate the error condition. Flash write errors may be
unrecoverable. If this is the case, the printer requires servicing by qualified
technicians.
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Chapter 7 Troubleshooting and Diagnostics
Meaning
Operational
No Power
Control program Initial Program Load (IPL) successful
Diagnostic mode command check
Control program IPL
Invalid CRC on boot block
Invalid CRC on control program or program not found
Lower 64K RAM failure
Upper 64K RAM failure
Diagnostic flash memory check failed or is not initialized
Diagnostic memory write failure
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