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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