Sound Problems

Symptom

Probable Cause

Solution

No sound +12 vdc power supply is bad

Bad connection to the board.

JAMMA Harness connected improperly Miscellaneous

Try another +12 vdc power supply.

Check for +12 vdc power on the board.

Check for +5 vdc power on the board.

Check the volume setting in the OPERATORS ADJUSTABLE section of the Operator Mode.

Check the speaker connection.

Identify Pin 1 on the JAMMA connector and on the PCB. If installed incorrectly, damage to the PCB may have occurred.

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