Data Sheet

AM can not turn on
Yes Yes
Check IC7 VCC.
Check C7circuit.
Check MCU I2C
control.
No
Check IC3 VCC.
SPK can not be turned on
Yes Yes
Check IC204 &
IC205 Vcc & output.
Check IC1.
Check pin16 of
IC1 VCC.
No
No
Check Q1 & IC5
5V.
Check IC204 &
IC205 circuit.
Earphone can not be turned on
Yes Yes
Check IC204 &
IC205 Vcc & output.
Check JK1 circuit.
Check JK1 output.
No No
Check IC12.
Check IC204 &
IC205 circuit.
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