circuit.8.9. WAVE ROM testFig.19- Press the EXECUTE button to start the test.- The test result (OK or NG) is displayed within thirty seconds. If thetest result is NG, not only the respective IC, but also a break orshort circuit in the ADDRESS/DATA BUS as well as in any of thestrobe signal lines may be the causeofthefailure. (refer to Fig.19 )8.10. SOUND SYSTEM testFig.20- Use the button in the SOUND GROUP to select an item from 1 to 6(refer to Fig.20 and Fig.21 ). Press a keyboard key.Fig.2118