Agilent 7820 GC Service
223
Replacing Components Inside the Lower Rear Metal
Cover
Replacing the AC board
1 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.
Remove the rear lower metal cover on the GC.
The AC board is located below the oven flapper assembly.
Disconnect cables, 2 wires to AC power receptacle, and 3 wires
to the oven triac located below the board. Also disconnect the
oven shroud wires.
At the front right corner of the board, disconnect the on/off power
switch's connecting push rod by pushing the rod forwards
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