Service manual

Note the position of the battery so you can replace the new battery in the
same position.
Unplug the wires(one black, the other red) from the two battery terminals.
Using a blade screwdriver, remove the bolt from one of the two steel bands
securing the battery to the sheet metal holder, being careful not to lose the
nut. Remove the bolt and nut from the other steel band.
Spread the bands and remove the battery.
Insert the new battery between the two prongs on the holder.
Close the two steel bands around the battery and replace the two bolts and
nuts securing the bands around the battery.
DO NOT allow a steel band to make contact with both battery terminals
simultaneously. This will short the output and may cause a shock.
Plug the two wires onto the battery terminals, black wire to black
terminal, red wire to red terminal.
Put the battery mounted on the holder into the scoreboard by rotating the
holder clockwise into a vertical position aligned with the two screw holes,
again being careful not to dislodge any digit segments. Replace the two
Phillips screws and star washers to secure the battery holder to the
scoreboard frame.
Plug the battery connector into the circuit board.
Slide the switch on the control board to the “ON” position and test for
proper operation.
When storing a scoreboard with a fully charged battery for an extended
period of time, make sure the switch on the control board is in the “OFF”
position so the battery will not discharge. The power cord should be
unplugged and the scoreboard display blanked.
Remove all electrical power to the scoreboard. Turn the ON/OFF slide
switch located on the control board, to the “OFF” position.
Remove all modular plugs on the control board.
Unscrew the four screws located at each corner of the control board.
Remove the control board, see Fig. 51 on the following page.
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
CAUTION
Step 11
Step 12
Step 13
Step 14
Long-Term
Battery Storage
Step 1
Step 2
Step 3
Step 4
7-14
How to Remove the Control Board