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SECTION 2 PRECAUTION
2-6
2.4.2 Fuse Replacement
The MG3641A/MG3642A is supplied with two 5 A or 3.15 A fuses shown in Table 1-2. The fuses are to be loaded
inside the fuse holders shown in Figure 2-2.
If a fuse blows, locate the fault and correct the cause before replacing.
CAUTION
If a fuse is replaced with the power turned on, there may be an electric shock hazard. Before replacing a fuse,
turn off the POWER switch and unplug the power cord from the AC outlet.
If the power is turned on without the protective grounding, there may be an electric shock hazard. When the
AC power voltage is unsuitable, the internal equipment may be damaged by an abnormal power.
Before turning on the power again after replacing a fuse, perform either protective grounding measures described
in Section 2.4.1 and check that the AC line voltage is suitable.
CAUTION
If there are no spare fuses, check that the replacement you obtain is of the same type, rated voltage and current
as the original.
If the fuse is not of the same type, it may not fit the holder, contact may be poor, or the fusing time may be too
long.
If the rated voltage and current of the replacement fuse are too high and trouble recurs, the new fuse may not
blow and the instrument could catch fire.
Take these safety measures before replacing a fuse in the following procedure:
STEP PROCEDURE
1. Set the POWER switch to OFF and unplug the power cord from the AC outlet.
2. Turn the fuse-holder cap (see Figure 2-2) counterclockwise and remove the cap together with the fuse.
3. Remove the blown fuse from the fuse cap and replace it with a spare fuse. (Direction arbitrary)
4. Refit the cap and clockwise turn it with a standard screwdriver until it will turn no further.
.