Combi Board; Circuit Diagram Overview; Source Selector Part; Audio Frequency & Logic Part - Philips MC-M570/21 Service Manual

Power 2003 100W Class D
Combi Board Circuit Diagram Overview
S S P
OURCE ELECTOR ART
Inputs:
AUX
Tape / USB
Tuner
CD
Source Selector IC + sound processing
Data generation for spectrum analyzer
Digital Out (provisional only)
Overvoltage protection for:
+AMP
-AMP
+5V6
+12V_A
Control Lines
1
Chapter 11-8
11-7
O P A
SCILLATOR & RE- MPLIFIER
Generation of following supplies:
+12V
+5V6
+5V_AMP
Pre-Amplifier + mute circuit
Adjustment of offset
Square wave Oscillator
Chapter 11-10
Signal flow
P
ART
3
11-7
A P
MPLIFIER ART LEFT CHANNEL
Modulator
Driver + Level shifter
Power FETs
4
Protection circuits
Chapter 11-11
A P
MPLIFIER ART RIGHT CHANNEL
Modulator
Driver + Level shifter
Power FETs
5
Protection circuits
Chapter 11-12
Speaker relay
A F L P
UDIO REQUENCY & OGIC ART
Headphone Amplifier
Subwoofer out (provisional only)
Port Expander (shift register)
2
Generation of +5V_CD
Fan control
Chapter 11-9
p
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