Fluke 45 - Manual (Page 97)

Maintenance
Current Input Fuses
6
6-3
If the fuse is good, the meter will read between .04
Ω
and 1.0
Ω
. If the fuse is blown,
the meter will read >10 M
Ω
to OL.
Replacing the 100 mA Input Fuse
W
Warning
For protection against fire or arc flash, replace a blown fuse
only with one of identical rating.
The 100 mA input fuse is mounted in the front panel input jack (see Figure 6-2).
To replace this fuse, first unplug the line cord. Then press in on the input jack and turn it 90
degrees counter-clockwise as shown in Figure 6-2. Slide out the fuse holder and fuse.
Replace a blown fuse with one of identical rating (see Table 6-5) and reinsert the fuse and
holder into the input terminal socket. Secure the fuse holder by pressing in and turning the
holder 90 degrees clockwise.
1000V CAT
FUSE F1
500 mA
F 250V
FUSED
600V C
AT
10A
100
mA
V
COM
Front Panel Input Terminal
100 mA Input Socket
Fuse Holder
To remove, push in and turn counter clockwise.
To insert, reverse this procedure.
F1 Fuse (500 mA, 250V, Fast Blow)
1500 A Minimum Breaking Capacity
qb13f.eps
Figure 6-2. Replacing the 100 mA Input Fuse
Replacing the 10 A Input Fuse
The 10 A input fuse is located inside the meter. To replace the fuse:
1. Remove the single Phillips-head screw on the bottom of the case and the Phillips -
head screw on each side of the rear bezel.
W
Warning
Opening the case may expose hazardous voltages. To avoid
electric shock, always disconnect the power cord and
measuring inputs before opening the case.
2. Remove the bezel and slip the case back from the front of the meter. The fuse and
fuse clip are visible at the front of the main printed circuit assembly (pca) near the
input terminals.