Sony KP-48PS1 Service Manual page 52

S
(AUDIO PROCESS)
IC4702
SOUND PROCESSOR
CN4701(1/2)
TV OUT L
MAIN L IN A1 56 AV MAIN L IN
TV OUT R
57 AV MAIN R IN
MAIN R IN A2
Q4701
QSS-1 B13 61 IF IN1
BUFF
Q4702 TRAP
69 IF IN2
BUFF (6.5MHz)
SPEAKER
OUT L
AM1 A14 60 MONO IN(AM)
SPEAKER
72 XTAL OUT
OUT R
X4701
18.432MHz
71 XTAL IN
21 POWER ON RESET
A RESET A7
SCL A5 2 SCL
H1
3 SCA
SDA B5
TO A BOARD
IC4705
CN1901
I2C SW
15 SCL SW2 9
14 SDA
Q4707
DA3 4
MUTE SW
DA4 3
DA2 5
6
DA1
DA0 7
AM2 A16
Q4706
BPF
QSS-2 B15
BUFF (5.5MHz)
Q4710
BPF
(6.0MHz)
Q4709
BPF
(6.5MHz)
Q4708
+9V B2 +9V
+5V
+5V B3
– 68 –
CN3202
HP R OUT 1
I
HP L OUT 4
TO A BOARD
CN1301
CN4701(2/2)
37 A3 L-TV
36
A4 R-TV
AC IN
CN6004
Q4703 220-240V
+9V
BIAS
50Hz
AC(L) 2
IC4703(1/2)
AC(W) 1
OUTPUT AMP
6
-
7
B10 L-OUT
5
Q4712
+
28
LPF
9
-
8
A11 R-OUT
Q4711 10
+
27
LPF
IC4703(2/2)
OUTPUT AMP
H2
TO A BOARD
CN1901
B8 SW2
IC4704
FM DEMODULATOR
5 MUTE 12 A9 SUB R
AF OUT
13 SW
1 AM IN
3 FM SIF
H2 H1
(USER CONTROL,MAIN SW)
HP OUT,
J3201
PROG+ PROG-
USER CONTROL
HEAD PHONE
S3101 S3102
CN3201 CN3101
2 KEY2 KEY2 2
S3104 S3105
S3205
VOL- TV/VIDEO
AUTO
CONVER
T6001 T6002
F6001
LFT LFT
CN6006
5A
CN3103
2 1 1 2 1 AC(L)IN
AC(L)IN 1
AC(N)IN 4
3 4 4 3 4 AC(N)IN
CN6007 CN3104
5 AC(N)OUT AC(N)OUT 5
1 AC(L)OUT AC(L)OUT 1
D6015
RECT
RY6000
STBY+5V
1
15
IC6007
MAIN SW 18
14
Q6004
MCM SW
T6100
D6100,D6106 SBT
RECT
5
1
6
D6104
RECT
3
Q6100,6102
4
PROTECT
– 69 –
T6004
PIT AUDIO
VOL+ EC3101 2 8
IR RECEIVER
S3103 CN3102
OUT 8 SIRCS
5 KEY1 4 12
STBY +5V 4 STBY +5V
B
10 +5V
+5V
TO A BOARD
STANDBY
CN1302 T6005
6
KEY2
D3001
PIT
Q310Q
2
R.LED
LED SW
13
POWER
S3106 15
7
9
10
T6003
PFT
12
1 11
1 16
3 18
3 14
IC6002
FEED BACK
IC6004
SWITCHING IC
VD VS 19
VC2 RT 7
COM 17
VB VG(H) 2
VC1 VG(L) 16
IC6302
STBY 5V REG
STBY +5V
9 4 IN OUT 5
IC6304
8
REF VOLTAGE
2 A K 3
Q6304
REF 1
VOLTAGE DET
Q6301,6302
PROTECT
G
(POWER SUPPLY)
D6302
RECT CN6301
1 +17V
K
2 -17V TO A BOARD
CN1605
IC6303
OVP
REF 1
K 3
D6308
RECT
D6309
CN6302
RECT
1 +22V
2 -22V
D6310
RECT
3 15V
Y
4 -15V TO D BOARD
D6301 CN5013
RECT
9
+6.5V
6 PROT
5 P.CONT
CN6303
3 +6.5V
D6300
RECT 4 +6.5V
5 L
+ +6.5V
9 +10.5V
TO A BOARD
10 +10.5V
CN1603
D6304
RECT
CN6304
1 +135V Z
TO D BOARD
IC6301
CN5002
+B REG
1
4
CN6300
5 STBY +5V
2 OVP
Q6303
OCP
G
3 OCP
TO A BOARD
CN1606
1 AC ON/OFF
– 70 –