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Agilent 7820 GC Service
1 Update the GC firmware revision to A.01.12.003 or higher
To obtain the latest firmware revision, visit the Agilent website
at
http://www.chem.agilent.com/_layouts/agilent/downloadFirm
ware.aspx?whid=58488
Cool down the oven.
Turn off the GC main power switch and disconnect its power
cord.
Hazardous voltages are present in the
mainframe when the GC power cord is connected.
Avoid a potentially dangerous shock hazard by
disconnecting the power cord before removing
any GC panels.
Components can be damaged by static electricity:
be sure to wear an ESD strap grounded to the GC
chassis while performing this procedure.
Inlets, detectors, and the oven are insulated
with fibrous materials which may cause
irritation to skin, eyes, and/or mucous
membranes. Always wear gloves when working
with the insulation. Additionally, if the
insulation is flaky/crumbly, wear protective
eyewear and a suitable breathing mask and/or
respirator.
Remove the right side electronics panel.
Disconnect the column from the bottom of the detector.
Remove the electronics top cover.
Disconnect the power/sensor cable to the NPD.
Disconnect the electrometer cable from the NPD signal board.
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