Block Diagram (1) - Sony KF-50SX300 Service Manual

5-1. BLOCK DIAGRAMS (1)
TUNER
TU1100
IC2000
SOUND
PROCESSOR
SCL
2 27
SDA
3 28
FM/AM
60
OSS
67 30
IC2300
X2000
CN2301 HEADPHONE AMPLIFIER 71
3 HP-L-OUT
3 6 25
TO H3 BOARD
72
1 HP-R-OUT
CN4302
1 7 24
RESET
AUDIO
21
SWITCH
AUDIO MUTE
Q2400,
Q2401
POWER OFF
MUTE
MUTE
Q2501
+5V
STBY
A ( )
TUNER, AUDIO,
REGULATORS
CN4401 D4401
4 LAMP LED
5 STBY LED
Q4407
D4402
R
TO A BOARD Q4401
CN0001
G
Q4404
7 POW ON
H2 ( )
LED INDICATORS
IC2300
AUDIO AMP J2200
REAR-R
6 1
SPEAKERS
REAR-L
7 3
IC2400
AUDIO AMP WOOFER
CN2004
9 WOOFER SP 3
1 TO WOOFER
IC2500
10
AUDIO AMP CN2003
R 1
7 2
TO
L 4 SPEAKERS
11 4
CN6202
AU+ 1
AU+ PS2000
AU+ 2
TO G BOARD
AU- 6
CN1606
AU- PS2001
AU- 7
CN5201
RED 2 A21
BLUE 2 A23
GREEN 2 A24
FS1 A26
RED 1 A27
GREEN 1 A28
BLUE 1 A29
C SLAVE A30
CVBS SLAVE A31
+3.3V
STBY FS2 A22
TO B BOARD
C-MAIN A32
CN3100
CVBS-MAIN B32
SWITCH AV LINK AV LINK A20
Q2003
KEY 1 A13
KEY 2 A5
RESET AUDIO A18
LINE MUTE A17
AUDIO MUTE A16
D4405
+7V
R
Q4402 G Q4405
Q4403 Q4406
S4401
CN4402
4 1 SW+ 5
TO G BOARD
SW+ 4
CN1607 AND CN1615
6 3
IC4401
IR/RECEIVER CN4404
SIRCS 4
OUT
STBY 5V 5
VCC
TO A BOARD
CN0001
KEY 2 2
S4402 - S4406
KEY 1 3
H1 ( )
USER KEY, SIRCS
S1000
CN1000
LAMP COV 3
GND 1
T ( )
LAMP
COVER
SWITCH
T1605
CN1601
1 AC 2 1
2 AC
FH1601
MAIN RECT
3 4
D1602
CN1616
POWER SUPPLY
1 AC RELAY
RY1601
PFC
3 AC 1 V SENSE
2 F/B
CN1615
3 CT
1 MAIN SW
TO H2 BOARD
4 RT
4 MAIN SW
CN4402
6 TIMER
CN1614 8 VC 1
1 BIMETAL
9 OCP
3 BIMETAL
POWER
CONTROL
CIRCUIT
Q1603
Q1604
Q1605
T1601
1
D1601
3
CONVERTER 4
AND
PROTECT
5
Q1601
Q1602
6
- 31 -
CN4302
HEADPHONE R OUT 1
HEADPHONE L OUT 3
TO A BOARD
CN2301
HEADPHONE SW 4
CN4303
V2-L 7
V2-R 9
V2-V 5
TO J BOARD
CN3800
V2-Y 1
V2-C 3
H3( )
AV INPUT
HP OUT
T1603
D1608,
10
D1612,
D1635,
11
D1636
12 +17V
1 13
IC1601
14
BARRIER
2
CONTROLLER DIODE
D1623
16
MOSFET
VD 18
TRANSISTOR
15
USED BY
VG 16
SWITCHING
CIRCUIT Q1606 17 +33V
VS 15
3 9
D1607 D1624
VB 14 MOSFET
TRANSISTOR
4 18
USED BY
VG (L) 12
D1625
SWITCHING
8
VC 2 10 CIRCUIT Q1607
PH1601
PHOTOCOUPLER
REGULATOR
4 1
1
3 2 3
1
D1614
9
REGULATOR
SUB -7V
8
G (
J4302
HEADPHONES
J4301
L
R
VIDEO
1
3
4
2
CN1602
+DC 1
POWER
SUPPLY
-DC 3
BLOCK
+11V
+5V
D1626 +4.5V
CN1606
AU +15V 1
+15V
AU +15V 2
PS1601
AU -15V 6
-15V
AU -15V 7
TO A BOARD
PS1602
CN6202
AU GND 3
AU GND 4
IC1602
AU GND 5
CN1605
POWER-CTL 5
TO A BOARD
AC DET 6 CN6206
Q1608
3
IC1603
)
POWER SUPPLY