Parts Replacement
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7-11
Replacing the Transformer
Disconnect the power cord from the analyzer when servicing sys-
tem components. High voltages are present inside the analyzer when
power is applied.
The furnace insulation cover and furnace are extremely hot, even after
power has been removed from the analyzer. Use caution and wear ap-
propriate gloves if removing the furnace insulation cover to access the
furnace.
1. Unplug the power plug from the analyzer.
2. Unplug J4 connector from the backplane board.
3. Unplug J3 connector from the transformer.
4. Unplug J7 connector from the backplane board. You will need to do
this to make room to remove the transformer.
5. Remove the four screws, the four shoulder washers, and the four lock
washers on the top of the transformer using a flat blade screwdriver.
Keep the screws and washers to insert into the new transformer.
6. Remove the transformer and retrieve the new transformer (PN
72765SE).
7. Place the new transformer in the analyzer, then place the shoulder
washers, lock washers, and screws (in that order) on the transformer
and tighten.
8. Reconnect J3, J4, and J7 connectors.
9. Put the top cover back on the analyzer.
10. Reapply power to the analyzer.
11. Recalibrate the analyzer.
