Panasonic TX-22LT3 Service Manual page 60

8.2. Power Block Diagram
TO
BACK LIGHT
TO
BACK LIGHT
TO
BACK LIGHT
TO
BACK LIGHT
TX-22LT3
Power Block Diagram
K-BOARD
!
SW105 SW104
STR
V-BOARD
!
LED
To IC1001-77
(DG-BOARD)
RM201
REMOTE
REMOTE
TO IC1001-5
CONTROL
(DG-BOARD)
VCC
RECIEVER
PH-BOARD
!
T661
3
PH1
9
5
VH 1
VH 3
4
7
5
VH
6
T660
3
PH2
9
5
VH 1
3
VH
4
7
VH 5
6
PD-BOARD
!
PD1
T601
3
Q607
9
VH 1
5
VH 3
VH 5
4
7
Q608
6
PD2
T602
3
Q605
9
1
VH
5
VH 3
VH 5
4
7
Q606
6
Q601
Q602
TO A-BOARD
OVP
(OVER
Q603,604
VOLTAGE
PROTECT)
SW801
K1
PUSH
7
5
3
SW103 SW102 SW101
F -/DOWN +/UP TV/AV
Q201
V1
Q202
3
D203
POWER LED STANDBY
(RED)
(GREEN)
5
PH3 PD3
8 3
9 2
PA602
TO DG3
(DG-BOARD)
PD5
4
5
PA601
6
7
8
IC602
9
PWM CONTROL
10 VCC 4 15
INV_DET
12 2 16
FROM IC3002-41
(DG-BOARD)
IC601
OP AMP
7
INV_PWM
3 5
FROM IC6004-98
(DG-BOARD)
1
6 2
LIGHT ON
FROM IC1001-97
8
(DG-BOARD)
A-BOARD
!
DC15V IN
JK801
A1
LED 15V 2
POWER SW 4
KEY 6
A5
LED 15V 6 Q805
4
STB_3.3V
15V
15V
15V
15V
15V
15V
5V
5V
IC871
AVR 12V
Q801
Q803
KEY
TO IC1001-124
(DG-BOARD)
Q804
Q802
Q807
Q814
Q813
OVP
(OVER VOLTAGE PROTECT
From PD-BOARD
26