Panasonic TC-20LB30 Service Manual page 21

IC2320 IC2001
OUND CONTROL
AUDIO AMP
LOUT 25 6 OUT1+ 2
LIN IN1
OUT1-
RIN ROUT 24 8 IN2
OUT2-
30 31 9 VOL
OUT2+
SDA1-5
SCL1-5
IC1003
STB 3.3V
RESET
STB 5V
5 4
1
STB 3.3V
SCL0
SDA0
Q1013
Q1005 Q1007
SCL2
SDA2
SCL3
SDA3
SCL1-5
SDA1-5
IC1008
TEMPERATURE
SENSOR
5
SDA
6
SCL
Q4014,Q4019,Q4027
Q4015,Q4020,Q4025
Q3001,Q3006,Q3008 Q4016,Q4021,Q4024
A-BOARD
27
4
10
12
MUTE
Q2006
MUTE
Q2007
Q2009
MUTE
Q2010
MUTE
Q2002
Q2004
Q1003
Q1002
IC1001
MCU
LED G
5
RESET
LED G 55
6
STOP MODE
LED R
LED R 56
72
REMOTE
18 SCL0
43
MAIN SW
19 SDA0
59
SRQ
49 A VOL KEY 54
1 PC_RXD BS ON 58
82 PC_TXD INV ON 52
61 PC_SYS PANEL ON 47
38 CC IN
66 A MUTE
SUB 5V
84
PC_RST
OSD R
70
SCL2
27
OSD R
OSD G
71 SDA2
OSD G 26
78 SCL3
OSD B
OSD B 24
80 SDA3
16 SCL1
17 SDA1
57 AGC ADJ
3
LCD MUTE
13 GC RESET
OSD R
OSD G
OSD B
IC4012
GC3FM
33 NRST
YUV00 20
C/Pb
42
VIN1
YUV09 8
Pr
49 VIN2
YUVVP0 6
V/Y
YUVHP0 7
56 VIN3
5
MD00
MDO02 3
MDO03 143
MDO10 138
MDIN00 132
MDIN07 125
SDA2 26 SDA
MDIN08 122
SCL2 25 SCL
MDIN15 115
SDA2
SCL2
A5
9
8
7
10
6
11
Q2003
Q2005
STB 3.3V 3
5
LED_G
2
LED_R
1
Q1001
Q1004
Q4035
IC1002
Q4036
EEPROM
SDA0 5
SDA
SCL0 6
SCL
IC4014
GLP
APWM
Q4033
172
132 LCDMUTE
PWRPWM
Q4034
171
255 NRST
96
OSDR04
106 OSDG05
111
OSDB04
IC4017
64Mbit SDRAM
6 YUV00
170
R00
LCDR0 LCDR7
15 YUV09
R07 163
16 YUVVP0
17 YUVHP0
22
MDIN00
G00 159
LCDG0 LCDG7
33 MDIN10
G07 152
37 MDO00
44 MDO07
B00 148
48 MDO08
LCDB0 LCDB7
B07 141
55 MDO15
1 SDA CLKOUT 137
2 SCL HPOUT 135
VPOUT 133
V5
V1
L+
L hp+
4 1
L-
2
L+ 3
L ch- 2
R hp+ 5
R-
3
R ch- 1
R+
4
R+ 6
1
7
6
3
2
4
5
RM001
REMOTE SENSOR
STB 3.3V
Q1300
STB 3.3V 3
VCC
REMOTE
5 VOUT
REMOTE Q1301
LED_G 2
LED_R 1
V-BOARD
TO
POWER UNIT
A9
6
POW ON PULSE
8 KEYSCAN
9 POWER ON
FOR
A12
FACTORY
USE
7
SDA0
6
SCL0
SDA3
5
SDA2/SDA1
SCL3
4
SCL2/SCL1
2
IRQ
1
STB 5V
STB +B
A8
16 ON/OFF
2
-
AI DIM
+ 1 18
3
+
5
- 7 17 DUTY DIM
6
IC4003
OP AMP
A15
44 VDD(5V)
47
VDD(5V)
8
R0
16 R7
18 G0
LCD PANEL
26 G7
28 B0
36 B7
2
CK
4 HS
5 VS
TC-20LB30
Signal Block Diagram
SPEAKER
L
SPEAKER
R
JK2101
HEADPHONES
D1302
G
R