Service and Maintenance 2
Checking the Fuse
U1231A/U1232A/U1233A Service Guide 31
Checking the Fuse
This procedure is applicable for U1232A and U1233A models
only.
It is recommended that you check the fuse(s) of the
multimeter before using it. Follow the instructions below to
test the fuses inside the multimeter.
1 Turn the rotary switch to the position and connect the
red test lead to the Ω input terminal.
2 To test the fuse, place the tip of the test probe on the top
half of A input terminal. Ensure that the probe tip
touches the metal inside the A input terminal, as shown
in Figure 2- 1.
3 Observe the reading on the instrument's display. Refer to
Table 2- 2 below for the possible readings that could
appear. Replace the fuse when OL is displayed.
Table 2 - 2 Fuse displayed readings
Current input
terminal
Part number Fuse rating
Displayed readings
Fuse healthy Replace fuse
2110-1402 11 A/1000 V ≈0.0 Ω OL
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