User Manual

electrolytic capacitor soldering（directional）
Other components soldering
104 monolithic ceramic capacitor（non directional）
105 monolithic ceramic capacitor（non directional）
10K resistance（non directional）
47K resistance（non directional）
the negative pole of the capacitor（short pin）
the positive pole of the capacitor (long pin)
SPK maim board
5V power input
switch lnterface
speak
LED lnterface
lmport Audio
lnterface between
sound box
SPK maim board
5V power input
switch lnterface
speak
LED lnterface
lmport Audio
lnterface between
sound box
4