Agilent Technologies 6890 Series, Service Manual, Page: 578 / 867

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Jun 2001
Error Codes and Internal Diagnostics
Agilent 6890 Gas Chromatograph Service Manual
860 Bad Mainboard and Fatal Errors
These messages almost always indicate that the mainboard is malfunctioning
and must be replaced. These messages are not numbered and usually appear
when the instrument is first turned on. Refer to the following table for a list
of messages.
Table 860-1 Bad Mainboard and Fatal Error Messages
Pop-up message Comments
BAD MAINBOARD
Main FPGA Failure Replace mainboard
Static RAM Failure Replace mainboard
Boot ROM Checksum Replace mainboard
ROM #2 Checksum Replace EEPROM 2.
ROM #3 Checksum Replace EEPROM 3.
Incorrect ROM #2 EEPROM 2 or 3 is installed in the wrong position. Change the
position the EEPROM is installed in.
Incorrect ROM #3
ROM #2 wrong version The version of either EEPROM 2 or 3 is different than that of
the other EEPROMs.
ROM #3 wrong version
DMA FPGA Failure Replace mainboard
DRAM Failure Replace mainboard
FATAL ERROR Replace mainboard for all of the following errors.
Exception Vector
Bus Error
Address Error
Illegal Instruction
Divide by Zero
No 512Hz Interrupt