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5. Circuit instruction
5.1 Power assign and block diagram
Power assign:
The Power board have 5V&12V output
，
other voltages are converted from 5V&12V.
a.
Vcc-Panel is converted by N1 from 12V
，
5V-Tuner converted by N21 from 12V supplies to tuner.
b.
3.3Vstb is converted from 5V-stb by N2, It’s standby power supply for main IC (N7), Keyboard, Remote
board ,Flash
（
N11
）
and HDMI CEC.
c.
12V supplies for Amplifier
（
N17
R2A15120FA
）
.
d.
5VAIN supplies for main IC , Headphone and USB
e.
3.3VA is converted by N4 from 5VAIN, It supplies for N39(main IC)
，
N8(HDCP),N9(EEPROM).
f.
2.5VA is converted by N5 form 5VAIN.
g.
1.32V is converted by N3 from 5VAIN.
h.
1.8VA is converted by N6 from 5VAIN.
i.
3.3V_Demod is converted by N18 from 5VAIN, 1.2V_Demod is converted by N19 from 3.3V_Demod.
