Sound board power input connector CN2

The same on every Data East sound board: pin 1 +5 V, pin 2 ground, pin 3 -12 V, pin 4 no connection, pin 5 key, pin 6 +12 V. The board needs +5, -5, +12 and -12 V; it makes the -5 V itself.

Systems

• Data East CPU Version 1/2
• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Related tips

• Sound board versions are not interchangeable
• The 520-5050-00 sound board variant
• Data East and Sega sound boards by game
• Loud hum from the speakers
• No sound with all voltages present: the PALs
• No sound, only amplifier hiss with the volume up
• Speech distorted or wrong and sound cuts out: leaked C30 corroded the voice ROM
• No sound though sound board voltages are fine: unreadable sound ROM

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Three, Clay Harrell (pinrepair.com)