Routine
Maintenance
Routine maintenance consists of replacing a defective line fuse,
cleaning the air lter, cleaning the cabinet, and cleaning the display.
These items are discussed in the following paragraphs.
Table 4-1. Fuse Part Numbers
Voltage Fuse Part/Number
115 V 5A 250 V 2110-0010
230 V 3A 250 V 2110-0003
WARNING
For continued protection against fire hazard replace line fuse only with
same type and rating. The use of other fuses or material is prohibited.
How to Replace the
Line Fuse
The value for the line fuse is printed on the rear panel of the swept
signal generator next to the fuse holder. See Figure 4-1
1. Turn o the sw
ept signal generator.
2. Remove the ac line cord.
Note
The detachable power cord is the instrument disconnecting device.
It disconnects the mains circuits from the mains supply before other
parts of the instrument. The front panel switch is only a standby
switch and is not a LINE switch.
3. Using a small at-blade screwdriver, rotate the fuse cap
counter-clo ckwise, and remove the fuse holder.
4. Replace the original fuse.
5. Replace the fuse holder in the rear panel. Using the screwdriv
er,
rotate the fuse cap clo ckwise to secure the fuse holder in place.
6. Reconnect the swept signal generator to line power.
Figure 4-1. Replacing the Line Fuse
4-4 Operator's Check/Routine Maintenance
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