112 Agilent U1251B/U1252B User’s and Service Guide
5 Maintenance
Replacing the fuse
Follow the procedures below to replace the fuse.
1 Turn the meter off and disconnect the test leads from the
external equipment. Make sure to remove the adaptor.
2 Wear clean/dry gloves and do not touch any other
component except the fuse and plastic parts. The current
calibration is considered shunt only, so do not recalibrate
the meter after replacing the fuse.
3 Remove the battery cover compartment to replace the
fuse.
4 Loosen the three screws on the bottom case and remove
the cover.
5 Loosen the two screws on the top corners to lift the
circuit board.
6 Gently remove the defective fuse by prying one end of the
fuse loose and removing it out of 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 holder.
8 Ensure that the rotary switch on the top case and the
circuit board switch stay on the OFF position.
9 Then re- fasten the circuit board and the bottom cover.
10 Refer to the table below for the part number, rate, and
size of the fuses.
This manual provides only the fuse replacement procedures, but not the
fuse replacement markings.
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