G1 Block Diagram - Sony KF-42WE620 Service Manual

G1 BLOCK DIAGRAM

CN1907 CN1609
F1901 T1906 T1905
AC IN
AC(L) AC(L)
AC(L) 1
2
LINE LINE
FILTER FILTER
3
AC(N) 1 AC(N) AC(N)
F (LINE FILTER)
KF-42WE620/50WE620
G1 (SWITCHING REGULATOR)
IC1601
SWITCHING REGULATOR
VG(H)
16
+5 15
VG(L) 12
D1602
DUBLER
RECTIFIER
OCP 9
D1619
1 VSENSE
VCI 8
F/B
2
PH1602
D1648
D6.5V
RY1602
D1601
RECTFIER
1
4
Q1602
Q1601
SWITCHING
SWITCHING
DRIVER OSC
D1608
T1603
PIT
R1613
10
11
12
+17V-1
D1623
13
14
15
+17V-2
16
D1625
17
Q1606
9
SWITCHING
2
18
Q1607
1
SWITCHING 8
PS1601
3
D1624
4
D1609
PS1602
PH1601
IC1602
SHUNT
REGULATOR
3 K R 1
A
2
+11V
RY1601
T1601
SBT Q1603
RELAY DRIVER
1 11
Q1604,1605
DELAY
OFF LATCH
3 10
D1614
4 9
5 8
6
D1610
Q1613,1622
DOUBLER
RECTIFIER
IC1603
IC1608
DC/DC CONVERTER. +11V
+9V REG.
F1602
18,19 11,12
VDD VOUT I O
20,21 13,14
25
OCL+P
OCL- 27
AMP- 29
IC1604
IC1606
DC/DC CONVERTER.
+5V REG.
F1603
18,19 11,12
VDD VOUT I O
20,21 13,14
OCL+P 25
IC1607
OCL- 27
+4V REG.
AMP-
29
I O
D6.5V
D1647
D1619
+17V-1
D1639
+17V-2
D1641
+11V
D1643
D6.5V
KF-42WE620/50WE620
CN1602
TO
3 LAMP-GND
LAMP
1
LAMP+DC
DRIVER
CN1605
8 17V
7 17V
TO
C1 BOARD
4 6.5V
3 6.5V
CN1603
AU-17V
C32
A32 AU-17V
C29 AU+17V
A29 AU+17V
C26 10V
A26
10V
5V
C25
A25 5V
C24
5V
A24 5V
C23 5V
A23
5V
D1649
A20
D6.5V
C19 D6.5V
A19 D6.5V
C18 D6.5V
A18 D6.5V
A16
11V
G
C15 11V
A15 11V
TO A BOARD
CN8902
A13
4V
C12
4V
A12
4V
C9 9V
A9 9V
C8 9V
9V
A8
A7 33V
A6
AC-RLY(-)
A5 AC-RLY(+)
A4 SUB7V
A3 POW-CTL
A2 17V-DET
C1 MS3.3V OVP
A1
10V-DET
99