134 U1253B User’s and Service Guide
5Maintenance
Fuse replacement
Replace any blown fuse in the multimeter according to the
following procedures:
1 Turn the multimeter off and disconnect the test leads.
Ensure that the charging adapter is also removed, if it is
attached to the multimeter.
2 Wear clean and dry gloves on your hands and avoid touching
any components except the fuse(s) and plastic parts. It is not
necessary to recalibrate the multimeter after replacing a
fuse.
3 Remove the battery cover compartment.
4 Loosen two side screws and one lower screw on the bottom
case and remove the bottom case.
5 Loosen the two screws on the top corners to take out the
circuit board.
6 Gently remove the defective fuse by prying one end of the
fuse loose and removing it from the fuse bracket.
7 Replace with a new fuse of the same size and rating. Make
sure the new fuse is centered in the fuse bracket.
8 Ensure that the knob of the rotary switch on the top case and
the corresponding switch on the circuit board remain at the
OFF position.
9 Refasten the circuit board and the bottom cover.
10 Refer to Table 5- 4 on page 134 for the part number,
rating, and size of the fuses.
This manual provides only the fuse replacement procedures, but not the
fuse replacement markings.
Table 5- 4 Fuse specifications
Fuse Agilent part number Rating Size Ty pe
1 2110-1400 440 mA/1000 V 10 mm × 35 mm
Fast blow fuse
2 2110-1402 11 A/1000 V 10 mm × 38 mm
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