9-2
2. Video/Audio Block Diagram
DIGIT
AL MAIN CB
A UNIT
AMP-MUTE
COMP-DET
HP-DET
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
SP3802
SPEAKER
R-CH
CN3801
SP3801
SPEAKER
L-CH
AMP(L)-OUT
AMP(R)-OUT
3
SP(R)-
4
SP(R)+
2
SP(L)-
1
SP(L)+
DIF-OUT1
DIF-OUT2
IF-A
GC
T
O
DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
IC9001
10
22
11
IF-A
GC
4
VIDEO SIGNAL
AUDIO SIGNAL
OUTPUT
I/F
DSP
/FILTER
PGA
ADC
RF AGC
A
UDIO(L)-IN
A
UDIO(R)-IN
DIGIT
A
L
A
UDIO-OUT
(OPTICAL)
A
UDIO(L)-IN
A
UDIO(R)-IN
HP(R)
HP(L)
SPDIF
COMPONENT
-Y/VIDEO-IN
COMPONENT
-Pb-IN
COMPONENT
-Pr-IN
JK3701
JK3703
COM-VIDEO-Y/VIDEO-IN
COM-VIDEO-Pr-IN
COM-VIDEO-Pb-IN
HEADPHONE
JA
C
K
JK3704
JK3801
(HEADPHONE AMP)
IC3851
2
8
3
7
6dB
6dB
B
UFFER
Q3704, Q3705
JK9301
ANT
-IN
(SILICON TUNER)
1
2
3
25
23
DRIVE
DRIVE
18
20
DRIVE
DRIVE
12
IC3801
(A
UDIO AMP)
CONTROL LOGIC
POWER
LIMITER
POWER
LIMITER
LEVEL
DETECTOR
LEVEL
DETECTOR
PL15.01ABLVA