Replace the fuse as follows:
1.
Remove the test leads and turn the calibrator off.
2.
Remove the battery door.
3.
Remove the three Phillips-head screws from the case
bottom and turn the case over.
4.
Gently lift the top cover from the end nearest the input/output
terminals until it unsnaps from the bottom cover.
5.
Replace the fuse with a 0.125 A 250 V fast fuse, Littelfuse
2AG.
6.
Fit the top and bottom covers together, engaging the two
snaps. Make sure that the gasket is properly seated.
Reinstall the three screws.
7.
Replace the battery door.
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