Agilent Technologies 6890 Series, Service Manual, Page: 572 / 867

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Jun 2001
Error Codes and Internal Diagnostics
Agilent 6890 Gas Chromatograph Service Manual
Faults 850
Fault 252—Front inlet: non-inlet module
Fault 252—Front inlet: non-inlet module
Fault 253—Back inlet: non-inlet module
Status message: F inlet wrong module or B inlet wrong module
The module installed in a detector slot is unusable. Two things could cause
this condition:
• The module is installed in the wrong position. For example, an inlet
module might be installed in the detector position.
• If the correct module is installed, it may be malfunctioning or its EEPROM
may be unrecognized by the 6890 GC.
❐
Make sure that the correct type of module is installed.
Fault 254—Non-aux module in pneu aux position
Status message: Aux wrong module
The module installed in aux slot is unusable. Two things could cause this
condition:
• The module is installed in the wrong position. For example, an inlet
module might be installed in the aux position.
• If the correct module is installed, it may be malfunctioning or its EEPROM
may be unrecognized by the 6890 GC.
❐
Make sure that the correct type of module is installed.
Fault 255—Front detector: invalid det module
Fault 256—Back detector: invalid det module
Status message: F det invalid type or B det invalid type
The front or back detector module is not supported by the firmware installed
in the 6890 GC.