3-2 Routine Maintenance
Introduction
The information in this section deals with routine type maintenance that can be performed by
the operator and includes procedures for replacing both the line fuse and the amps fuse.
Setting the line voltage and replacing the line fuse
WARNING
Disconnect the line cord at the rear panel, and remove all test leads con-
nected to the instrument (front and rear) before replacing the line fuse.
The power line fuse is located in the power module next to the AC power receptacle (see
Figure 3-1). If the line voltage must be changed, or if the line fuse requires replacement, perform
the following steps:
1. Place the tip of a flat-blade screwdriver into the power module by the fuse holder assem-
bly (see Figure 3-1). Gently push in and to the left. Release pressure on the assembly,
and its internal spring will push it out of the power module.
2. Remove the fuse, and replace it with the type listed in Table 3-1.
CAUTION
For continued protection against fire or instrument damage, replace the
fuse only with the type and rating listed. If the instrument repeatedly blows
fuses, locate and correct the cause of the trouble before replacing the fuse.
3. If configuring the instrument for a different line voltage, remove the line voltage selector
from the assembly, and rotate it to the proper position. When the selector is installed into
the fuse holder assembly, the correct line voltage appears inverted in the window.
4. Install the fuse holder assembly into the power module by pushing it in until it locks in
place.
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