Service And Maintenance; Checking The Fuse; Table 2-2 Fuse Displayed Readings - Agilent Technologies U1231A Service Manual

Checking the Fuse

U1231A/U1232A/U1233A Service Guide
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
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
Part number
terminal
2110-1402

Service and Maintenance

Checking the Fuse

position and connect the
Displayed readings
Fuse rating
Fuse healthy
≈0.0 Ω
11 A/1000 V
2
Replace fuse
OL
31