WPC-95 audio/visual board LED and beep codes

LED501 shows +5 V and normally flashes, slower than CPU LED203. Beeps at power-on: 1, board OK; 2 to 7 beeps, sound ROM S2 to S7 respectively has failed; 10 beeps, the board's static RAM is bad.

Systems

• WPC-95

Related tips

• Early WPC-95 games: static or thin, tinny sound
• DCS or WPC-95 sound faults: amps and op-amps
• WPC-95 won't boot with the A/V board plugged in after a -125 V short
• Sound cuts out or a rising shriek after a few minutes
• WPC-95 audio/visual board part numbers
• NBA Fastbreak: adding the serial port for linked play
• WPC sound board versions
• WPC speakers are all 4 ohm

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Three, Clay Harrell (pinrepair.com)