Premium PPA1207, Service Manual, Page: 23 / 34

1.Flow chart of malfunction diagnosis
4-2-4 Remote control can not be used
Take out batteries and five seconds later install again
Whether the voltage of Q1 varies or not
Replace triode
Whether the voltage of LED varies or not Transmittal tube failure
Receiver failure
Whether the voltage of remote controller core Ic1 varies or not
Core failure
Replace button
Liquid crystal failure
Replace batteries
Normal
Whether the LCD of remote controller displays normally or not
Whether battery voltage is less than 2.5 V or not (remote controller )
While press "ON/OFF" on remote controller
whether is music heard or not
Check subject to instruction section of "no
power supply diagnosis.
Whether LED display module lights on or not
YES
NO
YES
NO
YES
YES
NO
While press "ON/OFF" on remote controller, whether
transmittal indicator signal emerge or not
YES
NO
NO
NO
NO
NO
YES
YES
YES
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