Agilent Technologies 6890 Series Service Manual page 575

850 Faults
Fault 270—Front inlet: invalid module checksum
Fault 270—Front inlet: invalid module checksum
Fault 271—Back inlet: invalid module checksum
Status message: F inlet bad cksum or B inlet bad cksum
The inlet module's calibration is no longer valid.
Fault 272—Front detector: invalid module checksum
Fault 273—Back detector: invalid module checksum
Status message: F det bad cksum or B det bad cksum
The detector module's calibration is no longer valid.
Fault 274—Pneu aux module: invalid module checksum
Status message: Pneu aux bad cksum
The aux pneumatics module's calibration is no longer valid.
Fault 275—Front inlet: invalid constants from factory
Fault 276—Back inlet: invalid constants from factory
Status message: F inlet bad fact cal or B inlet bad fact cal
The inlet module's calibration is invalid.
Fault 277—Front detector: invalid constants from factory
Fault 278—Back detector: invalid constants from factory
Status message: F det bad fact cal or B det bad fact cal
The detector module's calibration is invalid.
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Error Codes and Internal Diagnostics
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001