Fluke 8860A Operator's Manual page 52

5.
Disconnect
the five
input wires
where
they attach
to the front
panel input jacks
by
pulling
them straight off.
SSSSSsS
Ohms
circuit
board.)
7
if
the
Fxternal Reference option
is
being installed,
then reinstall its
circuit
board on the
A/
D-Ohms board by
first
threading
its
two wires
through the hole,
an
then
fastening
it
with
the single
screw.
with
two
screws, as in
Figure 006
1.
9.
Reinstall
A/
D-Ohms
circuit
board
in
its
slot in
the
main instrument,
board.
Push the
connectors
all
the
way
on.
12
.
Fasten
the
Rear
Input circuit
board
to
tte
A/
D-Ohms
board
by installing
two
screws in
the angle brackets,
as in
Figure
006-1.
ground screw.
14
.
Reinstall the
guard
cover
(four screws).
15
.
Reinstall the
top cover
(four screws).