Casio AP-10 Service Manual
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— 14 —Press "Hall" button.Does the LED light up?Measure voltage at pin 9 of CAconnector.Is the voltage +5 V?Is a noise made?Touch pin2 of CF connectorwith test rod (+).Is a noise made?Set main volume to maximum.Touch pin1 of CA connectorwith test rod (+) of multimeterin resistance range, connectingtest rod (-) to ground.Check main volume andconnection to the volume.Replace MA1M PCB.Follow from (A) of "No sound"troubleshooting.NoYesYesYesYesNoNoNoReplace PS2M PCB.2. No sound |
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