Replacing
the Line Fuse
The value of the line fuse used in the 680XXB is de-
termined by the line voltage selection—a 5A line
fuse for 110 Vac line voltage; a 2.5A line fuse for
220 Vac line voltage. These line fuse values are
printed on the rear panel next to the fuse holder.
Step 1
Disconnect the 680XXB from the power
source.
Step 2
Using a small flat-blade screwdriver, turn
the fuse cap counter-clockwise and remove
the fuse holder.
Step 3
Replace the fuse in the fuse holder.
Step 4
Install the fuse holder in the rear panel.
Using the screwdriver, rotate the fuse cap
clockwise to secure the fuse holder in
place.
Step 5
Reconnect the CW generator to the power
source.
OPERATOR
ROUTINE
MAINTENANCE
MAINTENANCE
Before changing the fuse, always remove the power cord
from the power outlet. There is the risk of receiving a fatal
electric shock if the fuse is replaced with the power cord con-
nected.
Always use a new fuse of the type and rating specified by
the fuse markings on the rear panel of the instrument.
WARNING
6-14
680XXB OM
Summary of Contents for 680 B Series
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Page 11: ...Figure 1 1 Series 680XXB Synthesized CW Generator...
