akira HTS-393-001, Service Manual

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Model No.: HTS-393-001
Version: 1.0
TROUBLE SHOOTING
FAULT REMEDY
NO POWER a. Check power cord correct connecting.
b. Check the 220V~240V-voltage switch is at the correct position.
c. Check the power switch is ok.
d. Check the 250V 6A-safety tube is fine.
e. Check the transformer is fine.
NO SOUND a. Check the power+40V(OK).
b. Check whether the protecting circuit (relay) is ok.
c. Check the Pre-amp circuit.
d. Check whether the source input switch is ok.
e. Check the source input connection.
MICROPHONE NO SOUND a. Check the power supply.
b. Check the Mic input.
c. Check the echo.
NO RADIO a. Check the power supply.
b. Check the radio wire.
LED DISPLAY NO DISPLAY a. Check the power AC 9V.
b. Check the LED display.
DVD NO OUTPUT a. Check power +5V.
b. Check CD4053/4052.
AMPLIFIER WITH ONE
CHANNEL OUTPUT a. Check the signal input.
b. Check amplifier circuit.
c. Check protecting circuit.
OUTPUT DISTORTION a. Check signal input.
b. Check power+40V.
c. Check amplifier circuit.
d. Check protecting circuit.