420 Oven and Temperature Control
Replacing the oven shroud assembly
10 of 20
Jun 2001
Mainframe
Agilent 6890 Gas Chromatograph Service Manual
Replacing the oven shroud assembly
The oven heater is replaced as part of the oven shroud assembly. The oven
sensor may be replaced separately.
WARNING Before proceeding, turn off the oven and let it and any heated zones cool
down. Turn off the main power switch and unplug the power cord.
Caution Make sure you are properly grounded with an ESD strap before continuing.
1. Remove the GC’s rear covers.
2. Disconnect the two oven heater leads (P3, P4) from the AC power board.
Figure 420-4 Disconnecting the oven heater leads on the AC board
P4
P3
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