Philips MCM530 Service Manual page 60

Power 2003 75 - 150W Class D
Combi Board Circuit Diagram Overview
S S P
OURCE ELECTOR ART
Inputs:
AUX
Tape / USB / Sound Agent
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 11-5
11-4
O P A
SCILLATOR & RE- MPLIFIER
Generation of following supplies:
+12V_A, +12V_M
+5V6 → +5V_AMP
Pre-Amplifier + mute circuit
Adjustment of offset
500kHz Square wave Oscillator
3
Chapter 11-7
Signal flow
P A
ART
Modulator
Driver + Level shifter
Power FETs
Protection circuits
A
Modulator
Driver + Level shifter
Power FETs
Protection circuits
Speaker relay
Headphone Amplifier
Subwoofer out (provisional only)
Port Expander (shift register)
Generation of +5V_CD
Fan control
11-4
P
MPLIFIER ART LEFT CHANNEL
4
Chapter 11-8
P
MPLIFIER ART RIGHT CHANNEL
5
Chapter 11-9
A F L P
UDIO REQUENCY & OGIC ART
2
Chapter 11-6
p
P2003 Class D Drawing Overview 2003 11 18