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NOTE: In
general, if difficulty is experienced during operation of the Model FG3B Sweep/
Function Generator,
carefully reread the operating instructions and specifications first.
Make
certain the instrument is being used properly before returning it for service.
8.2
Fuse Replacement
If the
instrument fails to opera te, and the Gate indicator does
not
flash, the fuse may
be
defective. Use this procedure to change it:
A.
Verify
that power is present from the AC outlet and that the power cord is
good.
B. Disconnect the
power cord from the rear panel connector.
DANGER!
Never attempt to open the instrument or change the fuse when AC power is present.
32
C. Use a Phillips screwdriver to remove the four screws from the case. Lift off the bottom
half
case
,
exposing the circuitry.
D.
The fuse is in the rear corner of the instrument. If blown (glass is discolored), carefully pry
it out with a screwdriver and replace it with a new one of the same value.
E.
Replace the bottom half case and tighten the Phillips
screws.
F.
Reconnect
the
power cord and test the instrument. If it
fails
to
operate,
have it serviced.
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