COPYRIGHT © 2002 MERIT INDUSTRIES, INC.
8.
Disconnect the touchscreen power
connector (orange and gray wires) and
the 4-pin centronics power connector
from the power supply harness.
Disconnect the centronics power con-
nector and touchscreen power con-
nector.
9.
Unscrew the (2) thumbscrews secur-
ing the motherboard assembly, then re-
move the motherboard from the game.
10. Unscrew the thumbscrew securing the
fan assembly (see Figure 12), discon-
nect the 2-pin fan power connector,
and remove the fan assembly from the
game.
11. If your game has an angled bracket on
the edge of the monitor chassis board,
unscrew and remove it. This bracket
is only used for shipping and can be
discarded. See Figure 12.
12. Remove the ground connector from
P901 and the monitor signal cable from
P501 on the neck board. Cut the tie
wraps if necessary. See Figure 13.
13. Disconnect the 4-pin neck board con-
nector from the monitor chassis board
(P401). See Figure 14.
14. Carefully remove the glue where the
neck board connects to the picture tube,
then carefully remove the board.
NOTE: Do not twist the neck board dur-
ing removal.
15. Reaching in from the top of the game,
disconnect the A/C power connector
from the monitor chassis board. See
Figure 14.
16. Disconnect the degaussing power con-
nector (blue and brown wires) from
P802 on the monitor chassis board. See
Figure 14.
17. Disconnect the rotation switch connec-
tor (black and red wires) from P202 on
the monitor control board.
18. Carefully remove the high voltage line
from the back of the monitor by lifting
the rubber seal and pinching the metal
prongs until the line can be pulled from
the monitor.
19. Unscrew the (2) thumbscrews secur-
ing the monitor chassis board and metal
tray to the game and carefully remove
the monitor chassis board, neck board,
and monitor control board. Then re-
move the (4) screws securing the moni-
tor chassis board to the metal tray (see
Figure 14). The tray will be used to
mount the replacement chassis board.
Monitor Chassis Board
Replacement
20. Mount the new monitor chassis board
to the metal tray using the (4) screws
that were removed in the last step.
21. Carefully replace the chassis board
assembly, making sure the A/C power
connector is at the rear of the game.
The thumbscrews used to secure the
board assembly must line up with the
screw holes on the bottom of the game.
Once the board is correctly aligned,
tighten the (2) thumbscrews.
22. Carefully replace the high voltage line
on the back of the monitor.
23. Reconnect the rotation switch connec-
tor (black and red wires) at P202 on
the monitor control board.
24. Reconnect the degaussing power con-
nector (blue and brown wires) at P802
on the monitor chassis board. See Fig-
ure 14.
5 MONITOR CHASSIS BOARD REPLACEMENT PM0337-01 Rev C
