Philips 40PFL4901/F7 - Page 45

9-7
2. Video/Audio Block Diagram
DIGITAL MAIN CBA UNIT
Q3801
AMP-MUTE
BACKLIGHT-SW
COMP-DET
HP-DET
TO SYSTEM CONTROL BLOCK DIAGRAM
SP3802 SPEAKER R-CH
CN3801
SP3801 SPEAKER L-CH
AMP(L)-OUT
AMP(R)-OUT
3SP(R)- 4SP(R)+ 2SP(L)- 1SP(L)+
TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM
VIDEO SIGNAL
AUDIO SIGNAL
AUDIO(L)-IN AUDIO(R)-IN
DIGITAL AUDIO-OUT (COAXIAL)
Q3701
BUFFER
AUDIO(L)-IN
AUDIO(R)-IN
HP(R)
HP(L)
SPDIF
COMPONENT -Y/VIDEO-IN COMPONENT -Pb-IN COMPONENT -Pr-IN
JK3701
COM-VIDEO-Y/VIDEO-IN
COM-VIDEO-Pr-IN
COM-VIDEO-Pb-IN
JK3703 HEADPHONE JACK
(HEADPHONE AMP) IC3851
8 7
3 6
2
MUTE
6dB
6dB
DIF-OUT1 DIF-OUT2
IF-AGC
IC9001
10
22
11
(SILICON TUNER)
IF-AGC
4
OUTPUT I/F
DSP /FILTER
PGA ADC
RF AGC
JK9301 ANT-IN
1 2 3
25 23
DRIVE DRIVE
18
20
DRIVE DRIVE
12
IC3801 (AUDIO AMP)
CONTROL LOGIC
POWER LIMITER POWER LIMITER
LEVEL DETECTOR
LEVEL DETECTOR
PL15.01BBLVA