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Replacement procedures
Main boards
The replacement procedures are the same for
both main boards. Take note of the figures,
however, as several of the pinouts are in differ-
ent locations.
WARNING
Shock hazard. Before beginning, turn off the
instrument and disconnect the power cord.
Released: April 2004
To remove the main board
1. Remove the back cover. See
2. If a LAN card is installed, loosen the mount-
3. Disconnect all cables from the main board.
6850 Series Gas Chromatograph Service Procedures
page 1-16.
Caution
Use electrostatic discharge precautions
while replacing the main board.
ing screws and remove the card.
"Back cover"
on
246
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