70
Agilent 7820 GC Service
Lift the entire NPD unit up and off.
At this point the entire unit can be replaced.
Reassembly is the reverse of these steps.
Restore power and reconfigure the GC using the keypad,
supplying the requested information.
The frit constants update is NOT required for
New Version Detectors.
(Step 15 to 19 are for the old version detector only)
Record the serial number located on the side of the detector.
(Example TCD and FID labels shown, other detectors are
similar.)
Locate the disk (CD) that came with the new detector. You will
need it to upload the new detector's frit data into the GC.
Start Instrument Utility (version B.01.06 or greater), go to
Firmware Update > Frit Constants, and connect to the GC.
Use the software to upload the new frit constants. For details,
follow the software online help.
When prompted, reboot the GC.
Perform a checkout test.
Replacing an NPD signal board
1 Cool down the oven.
Turn off the GC main power switch and disconnect its power
cord.
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