2. Plug all connectors into the correct ports in
the back of the system controller (refer to
Figure 8.1).
3. Rotate the top of the system
controller/operator display box down until the
upper mounting screws are in the slots in the
bracket. Align the display box with the lines
scribed in Step 3 of Removal. Tighten all four
screws.
4. Install the top cover (refer to TOP COVER
Replacement procedure in the FRAME
section). Check for proper alignment of the
display with the cutout in the top cover; adjust
if necessary.
5. Connect the battery.
OPERATOR DISPLAY BOARD /
MEMORY BOARD
Removal
CAUTION
To avoid damage to the system controller and
operator display, follow the CAPACITOR
DISCHARGE PROCEDURE at the beginning of
this section.
1. Disconnect the battery and discharge the
capacitors (refer to CAPACITOR
DISCHARGE procedure in this section).
2.
Remove the system controller/operator
display box from the mount bracket (leave all
harnesses attached).
NOTE
When removing the cover from the system
controller/operator display box, be careful not
to break the wires from the key switch and
light or auxiliary selector switches (if so
equipped).
3.
Remove the 8 screws that attach the plastic
cover and lift the cover off the system
controller.
CAUTION
Refer to the procedures for handling
static-sensitive assemblies in the GENERAL
INFORMATION section.
4.
Unplug the key switch and light or aux.
selector switches (if so equipped).
5.
If replacing the operator display, remove the
four screws securing the operator display pc
board to the standoffs on the system
controller pc board.
CAUTION
The operator display board and system
controller are connected by a single 32-pin
connector. The memory board and system
controller are connected by two connectors.
Be careful not to damage the pins or
connectors when removing the operator
display board or memory board.
6.
Gently lift the operator display board or the
memory board off of the system controller.
Replacement
CAUTION
w
Be careful not to damage the pins or
connector when installing the operator
display board or memory board.
w
Refer to the procedures for handling
static-sensitive assemblies in the
GENERAL INFORMATION section
1.
Line up the connectors on the operator
display pc board or memory board with the
mating connectors on the system controller
pc board.
2.
If replacing the operator display board, mount
it onto the standoffs on the system controller
and secure it with four screws. If replacing
the memory board, make sure it is fully
seated on the system controller and the foam
block is in place on the memory board.
3.
Plug in the key switch and light or auxiliary
selector switches (if so equipped). Make sure
the key switch is plugged in correctly (not off
by one pin).
4.
Install the plastic cover over the system
controller/operator display.
NOTE
If the cover is too high, the LED display will
appear fuzzy. Ensure the cover is seated
against the display board, but does not
distort the overlay.
5.
Reinstall the system controller/operator
display box in the mount bracket.
E
lectric
C
ounterbalance
H
igh
O
utput
Electrical
4/3/00
8.2
