27
Service Manual
3-6
3-5. Fuse Test
XWWarning
To avoid electrical shock or personal injury, remove the test
leads and any input signals before replacing the battery or
fuses. Make sure the battery door is closed and latched before
you operate the meter.
To prevent equipment damage or injury, install ONLY specified
replacement fuses with the amperage, voltage, interrupt, and
speed ratings listed in the Fuse Replacement Maintenance
section.
1. 7XUQWKHIXQFWLRQVHOHFWRUVZLWFKWRWKH
SRVLWLRQ
2. Connect a test lead from the volts/ohms/diode-test input terminal to the A input
terminal.
3. The display should indicate between 0.1
and 0.3 . This tests F2 (11 A, 1000 V
fast).
4. Move one end of the test lead from the A input terminal to the mA/µA input
terminal.
5. The display should indicate between 5.3
and 6.0 . This tests F1
(44/100 A, 1000 V) .
6. If either of the above display indications is OL (overload), replace the appropriate
fuse.
3-6. Fuse Replacement
Referring to Figure 3-1, use the following procedure to check or replace the Fluke 27
fuses:
1. Perform steps 1 through 4 of the battery replacement procedure.
2. Pull the fuse cover down, then out of the meter.
3. Remove the defective fuse (or check continuity) through the suspected fuse), and if
necessary install a new fuse of the same size and rating.
4. Snap the fuse cover back into place.
5. Reinstall the battery/cover as instructed in step 6 of the battery spacer replacement
procedure.
Table 3-2. Replacement Fuses
Item Description Fluke Part Number Quantity
F1 W Fuse, F44/100 A, 1000 VAC/DC 943121 1
F2 W Fuse, 11 A, 1000 VAC/DC 803293 1
WTo ensure safety, use exact replacement only
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