A SERVICE OF

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Procedure 11. Bl Fan
Removal/Replacement
Warning
Always disconnect the power cord from the instrument before beginning this
replacement procedure. Failure to follow this precaution can present a shock
hazard which may result in personal injury.
1. Remove the four screws securing the fan assembly to the rear frame.
2. Remove the fan and disconnect the fan wire from the A6 power supply assembly.
3. To reinstall the fan, connect the fan wire to A6J3 and place the wire into the channel
provided on the left side of the rear frame opening. Secure the fan to the rear frame using
four
panhead
screws.
Note
The fan must be installed so that the air enters through the front and sides of
the instrument and exits out the rear of the instrument.
4-42 Assembly Replacement