14
A
A
t
t
t
t
a
a
c
c
h
h
i
i
n
n
g
g
O
O
p
p
t
t
i
i
o
o
n
n
a
a
l
l
D
D
e
e
v
v
i
i
c
c
e
e
s
s
This section provides information on installing optional devices.
Notes!
1. The arrows in the following procedures show the direction of
movement to remove/replace a device or component, or to turn a
screw or key to release a device.
2. All connectors are keyed to only attach one way.
3. Always use the correct screw size as indicated in the procedures.
R
R
e
e
m
m
o
o
v
v
i
i
n
n
g
g
t
t
h
h
e
e
R
R
e
e
a
a
r
r
C
C
o
o
v
v
e
e
r
r
Follow these instructions:
1.
Ensure that the power supply is
disconnected.
2.
Turn the key to the left to unlock
the rear cover:
3.
Turn the POS around. With
thumbs positioned as shown, grip
the sides of the rear cover and
remove the cover:
