Panasonic TX-23LX50M Service Manual page 26

TX-23LX50M / TX-23LX50A / TX-23LX50X
11.4. Signal Block Diagram
A-BOARD
JK001
C Y
AV1S
S_DET
V
AV1L X1500
L
AV1
R_SW
AV1R
R
V
LOUT
MONITOR
L
OUT
ROUT
R
Y_DET
Y
AV2
PB
COMPONENT
PR
V
AV2L
AV2
L
AV2R
R
TU100
TUNER
SCL SCL2(5.0V)
10
SDA SDA2(5.0V)
11
Q1515
AFT
12
TV-V
Q101
VIDEO OUT
17
SIF OUT
14
SW1
SW1
5
SW2
SW2
6
TX-23LX50A/M/X
Signal Block Diagram
IC1500
AV1L
VIDEO SIGNAL PROCESSOR
AV1R
56 C
AV2L
55
Y AV1
6
SDA SDA2(3.3V)
AV2R
57 13 SCL2(3.3V)
V SCL
RESET 24
SW1
SW2
10
70 XIN 656I07
15
16
21
69 XOUT
ROUT
22
30 LOUT
31
656I00 32
DAC OUT 2
40 Y
CVBSO3 61
41 PB
AV2
39 PR CVBSO1 63
53 V STB3.3V_D
V OUT 23
H OUT 17
52 TV_V
Q1513,Q1503,Q1501
RST3.3
Q1101
AUDIO_9V
D857
SDA2(3.3V)
SCL2(3.3V)
SDA1(EEP)
SCL1(EEP)
23 OE
SCL1(EEP5V) 2 A1
SDA1(EEP5V)
3 A2
SCL2(5.0V)
4 A3
SDA2(5.0V)
5 A4
10 A9
IC1106
LEVEL CHANGE
(5.0V-3.3V)
AFC
IC2501 IC2251
MULTI SOUND PROCESSOR AUDIO AMP
SPL
56 SC1_IN_L DACML 28 6 IN1
SPR
DACMR 27 8 IN2
57 SC1_IN_R
LOUT
37
OUTL
50 SC3_IN_L
9
VOL
ROUT
36
OUTR
51 SC3_IN_R MUTE
Q2501
21 RESETQ
I2C_DA 3 SDA2(5.0V)
67 ANA_IN+
I2C_CL 2 SCL2(5.0V)
77 D_CTR_I/O_1
X_IN 71
78 D_CTR_I/O_0
X2501
Q2502
X_OUT 72
Q2255
IC1101
EEPROM
SDA1(EEP) 5 SDA
Q1012
WC 7
SCL1(EEP) 6 SCL
IC1104
RESET
IC1100
2 4
MCU
26
BATS
50 RST SMUTE 45
Q1105
RC_IN 33
STBY_LED
STBY_LED 44
14 OE/RST WP 16
KEYSCAN 24
S_DET
42 S_DET Q1223
ST_ON 62
5.0V Y_DET
43 Y_DET
D851
D0-D7 D0-D7 IC1102
SDRAM
Q851 31 A0-A19
PROT1 A0-A19
52 XTAL2
D0-D7 IC1103
53 XTAL1
X1100
PROM
A0-A18
B1 22 9 SCL1(EEP)
BUSREQ 13
B2 21 10 SDA1(EEP)
INV_ON 46
B3 20 11 SCL2(3.3V)
PROT2 41
B4 19 12 SDA2(3.3V)
34 P3.3
32
LVDS_ON
14 30
B9 VS
IC1700
29 HS
LCD DRIVER
(1/2)
38 AI_OFF
OSD R
OSD R 57 131 RIN1
OSD G
Q1500,Q1502 OSD G 58 132 GIN1
21 CVBS
OSD B
OSD B 59 133 BIN1
25 AFC
R1.0
12
YIN.0 R1.7
19 YIN.7
HS_OSD
23 H_OUT
VS_OSD
22 V_OUT
G1.0
9 V_IN
8 H_IN
G1.7
2 RESET
B1.0
B1.7
PCS3
SDA2(3.3V) 7 SDA PCS1
SCL2(3.3V) 4 SCL PCS2
PCK1
26
V-BOARD
A2 V1
6 HP_L 6
OUT1+ 2 5 SP_L+ 5
OUT2+ 12 2 SP_R+ 2
7 HP_R 7
4 4 4
OUT1- SP_L-
10 3 3
OUT2- SP_R-
5.0V
SN201
16 16
5.0V
Q2256
RM201
REMOTE RECEIVER
Q2257
INV_24V
15 BATS 15
Q2003
STB 3.3V
12 STB 3.3V 12
Q2001 13 13
REMOTE
STBY_LED
11 11 Q201
LED_R
LED_R
SW301
K-BOARD
STR
8.0V
AP2
Q1717
A4 AP4
1 KEY_SCAN 1
4 POW_ON 4
Q1716 Q1715 Q1711,Q1710
Q1703
Q1707
Q1705
A3 AP3
18 B5 A5 6 20 INV_SOS 20
16 B7 A7 8 21 INV_ON 21
Q1701
22 INV_ADIM 22
IC1106 (2/2)
23 INV_PWM 23
LEVEL CHANGE FOR
(5.0V-3.3V) FACTORY
A6
Q1714,Q1718 USE
2 BUSREQ
IC1701
PMP2 121 SDA2(5.0V) 7
SDA2
SCL2(5.0V) 6
PMP1 120 LVDS SCL2
TRANSMITTER SDA1(EEP5V)
5
SDA1
SCL1(EEP5V)
4 SCL1
32 /PDMN
1 STB 5.0V
2
82 3 STB5.0V
50
93 A5
56 TX0-
TA- 48 2 TX0-
TA0
TX0+
TA+ 47 4 TX0+
TX1-
TA6
TB- 46 6 TX1-
TX1+
TB+ 45 8 TX1+
94 4
TB0 TX2-
TC- 42 10
TX2-
TX2+
103 14
TB6 TC+ 41 12
TX2+
TCLK-
TCLK+ 40 14 TCLK-
TCLK+
TC0
TCLK+ 39 16 TCLK+
TX3-
TD- 38 18 TX3-
TC6
TX3+
TD+ 37 20 TX3+
15
106
TD0
21 LVDS_OPTION
115 24
TD6
26 PANEL_5V
LCD_DEN
126 30
27 PANEL_5V
LCD_HS
122 27
28 PANEL_5V
LCD_VS PANEL_5V
125 28
LCD_CLK 29 PANEL_5V
80 31
30 PANEL_5V
JK201
1
5
4
3
2
6
7
V2
R+
4
SPEAKER
R-
3
R
L+
2
SPEAKER
L-
1
L
SW302 SW303 SW304 SW305
FUNCTION
DOWN UP TV/AV
K3
1
1
TO
AP1
CN301
20 POW_ON
AP-BOARD
AP5 14 13 12 11
LCD PANEL
TX-23LX50A/M/X
Signal Block Diagram