DMM4040/4050
Users Manual
2-4
5. Replace the selector block back into the fuse holder.
Changing the line voltage setting may require a different line-power fuse for proper
operation. Check Table 2-1 for the appropriate fuse for the selected line voltage.
With the voltage set and appropriate fuse installed, replace the fuse holder back into the
Meter and reconnect the power cord.
Replacing the Fuses
The Meter employs fuses to protect both the line-power and current measurement inputs.
Line-Power Fuse
The Meter has a line-power fuse in series with the power supply. Table 2-1 indicates the
proper fuse for each of the four line voltage selections. This fuse is located on the rear-
panel.
To replace this fuse:
1. Unplug the power cord from the Meter.
2. Remove the fuse holder by inserting a small screwdriver blade in the narrow recess to
the left of the fuse holder and pry to the right until the holder pops out as shown in
Figure 2-1. The Meter is shipped with a replacement fuse of the same rating as the
fuse installed in the fuse block.
3. Remove the fuse and replace with one rated appropriately for the selected line-power
voltage. See Table 2-1.
4. Replace the selector block back into the fuse holder.
XW Warning
To avoid electric shock or fire, do not use makeshift fuses or
short-circuit the fuse holder. Use only the fuses recommended
in this manual.
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