Testing Fuses (F1 And F2) - Fluke 80 SERIES III Service Information

80 Series III
Service Information

Testing Fuses (F1 and F2)

To test the internal fuses of the Meter, refer to Figure 3 and do the following:
1. Turn the rotary selector switch to the ReE position.
2. To test F2, plug a test lead into the
3. To test F1, move the probe from the
12
input terminal. (Because the receptacles of the input terminals contain split
A
contacts, be sure that you touch the probe to the half of the receptacle contact that is
nearest the LCD.)
The display should indicate between 00.0 Ω and 00.5 Ω.
If the display reads OL
reads any other value, further servicing is required.
The display should read between 0.995 kΩ and 1.005 kΩ.
If the display reads a high resistance or
again. If the display reads any other value, further servicing is required.
Good F2 fuse: 00.0Ω to
Replace fuse: OL
Touch top half
of input contacts
Good F1 fuse: 0.995 KΩ to
Replace fuse: OL
Figure 3. Testing the Current Input Fuses
z
input terminal, and touch the probe to the
(overload), replace the fuse and test again. If the display
input terminal to the
A
OL (overload), replace the fuse and test
00.5Ω
1.005KΩ
mA µA
input terminal.
87 TRUE RMS MULTIMETER
MIN MAX RANGE HOLD H
REL Hz
PEAK MIN MAX
mV
mA
V A
µA
V
OFF
mA µA
A COM V
!
400mA MAX
CAT II
FUSED
10A MAX 1000V MAX
FUSED
!
87 TRUE RMS MULTIMETER
MIN MAX RANGE HOLD H
REL Hz
PEAK MIN MAX
mV
mA
V A
µA
V
OFF
mA µA
A COM V
!
400mA MAX CAT II
FUSED
10A MAX 1000V MAX
FUSED
!
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