Fuse Replacement W; Service W - Fluke 87 TRUE RMS MULTIMETER User Manual

87
Users Manual
Turn the rotary selector switch to MJ
1.
2. Plug a test lead into the VJL input terminal and
touch the probe to the [A] input terminal. Because the
receptacles of the input terminals contain split
contacts, be sure that you touch the probe to the half
of the receptacle contact that is nearest the LCD.
3. The display should indicate between 00.0 and 00.5
ohms. This tests F2 (11A, 1000V). If the display
reads OL (overload), replace the fuse and test again.
If the display reads any other value, have the meter
serviced.
4. Move the probe from the A input terminal to the mA
A input terminal.
5. The display should indicate between 0.995 k
1.005 k . This tests F1 (44/100A, 1000V). If the
display reads OL (overload), replace the fuse and test
again. If the display reads any other value, have the
meter serviced.
Fuse Replacement
Referring to Figure 4, use the following procedure to
examine or replace the meter's fuses:
32
K
1.
.
2.
3.
4.
5.
and
Service
If the meter fails, check the battery and fuse(s) and
replace as needed. If the meter still does not work
properly, review this manual to make sure you are
operating it correctly. If the meter still malfunctions, pack it
securely in its original shipping container and forward it,
postage paid, to the nearest Service Center. Include a
description of the malfunction. Fluke assumes NO
responsibility for damage in transit.
Perform steps 1 through 3 of the battery replacement
procedure.
Remove the defective fuse by gently prying one end
of the fuse loose and sliding the fuse out of the fuse
bracket.
Install a new fuse of the same size and rating. Make
sure the new fuse is centered in the fuse holder.
Ensure that the case top rotary switch and circuit
board switch are in the OFF position.
Replace the case top, ensuring that the gasket is
properly seated, the battery leads are properly
dressed, and the two snaps on the case top (at the
end near the LCD) are engaged. Reinstall the three
screws.