Sony KP-44PS2 Service Manual page 56

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
A RESET A7 21 POWER ON RESET
SCL A5 2 SCL
H1
3 SCA
SDA B5
TO A BOARD
IC4705
CN1901
I2C SW
15 SCL SW2 9
14 SDA
Q4707
4
DA3
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 B3 +5V
– 72 –
CONTROL PANEL
SW4 SW5
-
SW1
SW2
PROGR + PROGR -
AC IN
CN4701(2/2) CN6004
220-240V
50Hz
37 A3 L-TV AC(L) 2
36
A4 R-TV
AC(W) 1
Q4703
+9V
BIAS
IC4703(1/2)
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 AF OUT 12 A9 SUB R
13 SW
1 AM IN
3 FM SIF
HA
(USER CONTROL,MAIN SW)
SW6 CN3101
Q3102,3103
1 LED LED 1 +5V
LED SW
4 SW DET SW DET 4
(OPEN/CLOSE)
3 KEY1 KEY1 3
2 KEY2 KEY2 2
SW3
+ D3102
(STANDBY)
T6001 T6002
F6001
LFT LFT
CN6006
5A
CN3104
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 CN3103
5 AC(N)OUT AC(N)OUT 5
1 AC(L)OUT AC(L)OUT 1
D6015
RECT
RY6000
IC6004
SWITCHING IC
STBY+5V
1 VD
15 VC2
IC6007
18 VB
MAIN SW
14 VC1
Q6004
MCM SW
T6100
D6100,D6106 SBT
RECT
5
1 9
6
D6104 8
RECT
3
Q6100,6102
PROTECT 4
– 73 –
T6004
PIT AUDIO
IC3101
2 8
D6302
IR RECEIVER
CN3102
RECT
8
OUT SIRCS
5 KEY1 4 12
STBY +5V 4 STBY +5V
B
+5V 10 +5V
TO A BOARD
CN1302 T6005
6 KEY2
PIT
D6308
Q3101
2
R.LED RECT
LED SW
13
S3101 15
7
9
D6301
RECT
10
T6003
PFT
12
1 11 1 16
3 18
3 14
+
IC6002
FEED BACK
VS 19
RT 7
COM 17
VG(H) 2
VG(L) 16
IC6302
STBY 5V REG
STBY +5V
4 IN OUT 5
IC6304
REF VOLTAGE
2 A K 3
Q6304
REF 1
VOLTAGE DET
Q6301,6302
PROTECT
G
(POWER SUPPLY)
CN6301
1 +17V
K
2 -17V TO A BOARD
CN1605
IC6303
OVP
REF 1
K 3
D6309
CN6302
RECT
1 +22V
2 -22V
D6310
RECT
3 15V
Y
4 -15V TO D BOARD
CN5013
9 +6.5V
6 PROT
5 P.CONT
CN6303
3 +6.5V
D6300
RECT 4
+6.5V
5 +6.5V L
9 +10.5V
TO A BOARD
10 +10.5V
CN1603
D6304
RECT
CN6304
1 Z
+135V
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
– 74 –