A short speech or music burst at power-on is normal

Right after switch-on the game should play a speech or music phrase of a second or two, sometimes cut short. Hearing it shows the sound system is alive.

Systems

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

Related tips

• No music, effects or speech: failed 6821 PIA for sound on the CPU board
• Sound board power input connector CN2

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