Sega TETRIS GIANT, Owner'S Manual, Page: 149 / 214

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SWITCHING TO A NAOMI BOARD
This product can be used with an existing NAOMI board to operate games that meet the following conditions:
• Screen output: Horizontal synchronizing frequency of 31 kHz
• Monitor direction: Horizontal
• Titles that require 2 START buttons and for which there is 1 joystick (analog will not work) for Player 1 and
Player 2 and 2 buttons
(Left button on joystick corresponds to JVS BUTTON1, and right button corresponds to BUTTON2)
If the game does not meet the conditions above, it will not work correctly so do not attempt to use it.
Instructions for replacing the board with a NAOMI board are provided below.
Refer to the service manual for the NAOMI board and the particular game for instructions on how to configure the
board and game settings.
1
Refer to "16-3 Removing Game Board", remove the SystemSP board.
2
The wire labeled "I/O A" among the wires removed in Step 1 will continue to be used.
Connect the connectors for the wire labeled "I/O A" and the supplied JVS cable to the JVS I/O board
inside the back door, and fasten them in place with 2 cord clamps.
3
Connect the 4 connectors. Check the 1P and 2P tags and be sure to connect them correctly.
18
Fasten with cord clamps.
(2)
JVS CABLE
WIRE LABELED "I/O A"
Connect the connector.
RA60P, JVS
JVS I/O BOARD
Connect the connector.
SM12P, YL6P, YL12Px2