S
24 VDC power supply cable (see
a
Figure 3)
S
ground wires (see
c
Figure 3)
S
Ethernet cable (see
b
Figure 3). Make sure to
cut wire ties that hold the Ethernet cable.
4.
Unfasten the two captive screws that hold the touch screen
panel to the base panel (see
d
in Figure 2).
Figure 3
Removing the Controller Board
,
contd.
c
a
d
c
Figure 4
a: Power supply board
b: Four screws
c: Hexagonal stands
d: Plastic standoffs
e: Six terminal blocks
f: JP 7 on the controller board
g: Touch screen 24 VDC supply
h: Line voltage board
i: Ground wire
power supply
b
5.
Remove the touch screen panel (see
a
in Figure 2) by
compressing the standoffs (see
b
in Figure 2).
6.
Disconnect the following cables (see Figure 3):
7.
Disconnect the following:
b
e
f
g
a
8.
Unfasten the four screws (see
b
in Figure 4) to remove
the old power supply board (see
a
in Figure 4).
9.
Remove the four hexagonal stands (see
c
in Figure 4).
h
i
j
a: 24 VDC supply cable
b: Ethernet cable
c: Ground wires
S
24 VDC supply cable from JP7 on the controller board
(see
f
in Figure 4).
S
main line voltage supply from the board (see
j
in Figure 4)
S
board line voltage supply from the board (see
h
in Figure 4)
S
power supply ground wire
10.
Remove the four plastic standoffs (see
d
in Figure 4).
11.
Remove the six remaining terminal block connectors
from the controller board (see
e
in Figure 4).
12.
Unfasten the seven mounting screws from the con-
troller board and remove. See Figure 1 in
Installing the Con-
troller Board
.