Panasonic TX-23LX50F / TX-23LX50P Service Manual ▷ View online
VIDEO & STEREO AUDIO BLOCK DIAGRAM
TO LCD
PA
NEL
NEL
JK2350
R
L
HEADPH
1 5 4 3 2 6 7
AV2 21 PIN SCART
20
VIDEO
IN
15
C IN
19
V
IDE
O OUT
O OUT
6
L IN
3
L OUT
2
R IN
1
R OUT
TUNER
17
14
L
R
V1
3
4
IC250
TDA1517N3
9
R IN
1
L IN
R OUT
6
L OUT
4
IC1500
AV2 V
57
VSP9405BVKC4
61
TX
T CV
T CV
BS
52
TVCVBS
AV2 C
58
AV1C
VB
S
S
53
AV3 YV
IN
55
AV3
C
56
1
2
1
÷2
V2
5
÷6
R2350
R2351
11
9
11
9
B1
A16
Q202
Q201
JK300
1
V L R
AV3 TERMINAL
C Y
IC1100
SDA5550M
TXT CVBS
21
AD_65
6.0
÷
÷
AD_656.7
IC1700
DPS9450A
OSD R IN1
131
OSD G IN1
132
OSD B IN1
133
57
OSD R
58
OSD G
59
OSD B
A50
AD_656.0
÷ AD_656.7
R1.0
÷ R1.7
G1.0
÷ G1.7
B1.0
÷ B1.7
2
B - BOARD
A - BOARD
V - BOARD
1
÷2
5
÷6
AV1 21 PIN SCART
20
VIDEO
IN
15
R IN
11
G I
N
N
19
V
IDE
O OUT
O OUT
7
B IN
6
L IN
3
L OUT
2
R IN
1
R OUT
IC1701
DPS9450A
TX0-
TX0+
TX1-
TX1+
TX2-
TX2+
TX3-
TX3+
B1.0
÷ B1.7
G1.0
÷ G1.7
R1.0
÷ R1.7
4
6
8
6
8
10
12
18
12
18
20
B EXT
41
R EXT
39
G
EXT
40
FBL1
37
16
FBL1
Q1504
Q1505
Q1503
Q1501
A
V
2 CV
BS
BS
62
A
V
1 CV
BS
BS
63
IC2000
MSP3410GAB83
AV3 R
IN
51
AV2 R
IN
54
SPK L
O
U
T
28
SPK R
O
U
T
27
AV3 L I
N
50
AV2 L I
N
53
AV1 L I
N
56
AV1 R
IN
57
AV1 L OUT
37
AV1 R OUT
36
AV2 R OUT
33
AV2 L OUT
34
A12
AUDIO AMPLIFIER
SOUND PROCESSOR
VIDEO PROCESSOR
MICRO PROCESSOR
LCD DRIVER
LCD PANEL
INTERFACE
INTERFACE
SIF
67
AM
60
8
8
13
9
POWER SUPPLY BLOCK DIAGRAM
1
4
SW800
K1
Mains In
+
~
D801
~
F800
Line
Filter
LF802
Line
Filter
LF803
P - BOARD
-
IC801
POWER
SUPPLY
23
20
19
16
15
11
10
7
T801
3
÷4
2
9
7
÷8
17
14
÷15
13
10
IC803
IC802
IC850
REG
1
Q851
D852
D851
D853
P2
17
÷24
D812
3
A3
17
÷24
A16
15
RM1050
REMOTE
VCC
3,3V_SBY
V - BOARD
SN1063
V2
15
TUNER
15
3
33V
A12
10
33V
4
5V
B1
10
B - BOARD
4
5V
IC860
REG
3
5
4
Q868
D862
D863
Q867
33V
IC2000
MSP3410
11,12,13,65,66,80
5,0V
8,0V
39
IC1100
SDA5550M
6,73
SBY2,5V_D
SBY3,3V_D
8,40,75,92
SBY2,5V_A
22,56
IC1102
SDRAM
32
IC1103
EPROM
32,1
SBY3,3V_D
SBY3,3V_D
IC1101
EAROM
8
SBY3,3V_D
IC250
TDA1517
7
15V_AUDIO
IC1104
RESET IC
2
SBY3,3V_D
IC1105
RESET IC
2
24V
IC1500
VSP9405
5,28,34,66
1,8V_D
3,3V_D
7,12,25,72
35,42,50,64
1,8V_A
3,3V_A
1,44,59,75,78
A6
1
SERV
ICE
5,0V
A50
26
÷30
Q1700
5,0V
A4
1
÷5
24V_INV
LCD PANEL
A - BOARD
IC1700
DPS9450A
5,20,32,40,48,57,68,78,86,96,104,112,123
24,62,91,118
129,139
DPS_3,3D
DPS 1,8V_D
DPS 3,3V_A
75,134,143
DPS 1,8V_A
33V
5V
24V
68
1,8V
PFC
Filter
L801
6
1
12
7
14
÷16
14
÷16
D810
14
Q806
D805
Q803
Q805
D806
15V_AUDIO
Q866
15V
24V_INV
F853
IC853
REG
1
4
24V
3,3V_SBY
IC854
REG
1
4
5V
D854
IC871
REG
4
5
8V
Q890
3,3V
IC881
REG
2
1
Q880
1,8V
K3
3
P1
3
1
1
LC filter
DPS 1,8V_D
DPS 1,8V_A
1,8V_A
1,8V_D
LC filter
LC filter
LC filter
IC852
REG
1
2
D855
LC filter
LC filter
LC filter
LC filter
DPS 3,3V_D
DPS 3,3V_A
3,3V_A
3,3V_D
2,5V_SBY
IC1701
THC63LVDM
3,3V
1,9,26,34,44
3,3V_SBY
5V
K - BOARD
10
CONTROL BLOCK DIAGRAM
TUNER
11
10
SDA2 5,0
A12
6
33V
5
5V
B1
6
B - BOARD
5
SCL2 5,0
SDA2 5,0
SCL2 5,0
7
7
12
AFC
AFC
A16
14
RM1050
REMOTE
CONTROL
ROUT
BATS
V - BOARD
D1051
SN1063
V2
14
Q1063
Q1065
STBY_LED
13
13
RC
BATS
STBY_LED
RC
A3
IC802
B3PAA0000267
KEYSCAN
P - BOARD
P2
PSU_ON
2
2
LOCAL KEYS
SWITCHING
MATRIX
Q851
POWER SUPPLY
KEYSCAN
PSU_ON
LCD PANEL
LCD_CLK
LCD_HS
LCD_VS
LCD_DEN
A4
12
13
LCD_AI
BACKLIGHT_PWM
Q1706
RST 3,3
SCL2 3,3
SDA2 3,3
HS_DPS_IN
VS_DPS_IN
656_CLK
CLKF
AI_OFF
DACY_OUT
INV_PSU_ON
LCD_CLK
LCD_HS
LCD_VS
LCD_DEN
Q1700
LCD PANEL 5V
DACU_OUT
DACV_OUT
AI_OFF
BATS
LCD_AI
INV_ON
CLK20
IC1700
DPS9450A
4
SCL2 3,3
2
RST 3,3
7
SDA 3,3
8
HS_DPS_IN
9
VS_DPS_IN
AD_656.0
÷
AD_656.7
656_CLK
26
CLKF
27
AI_OFF
38
PANEL_ON
39
42
INV_PSU_ON
INV_ON
46
CLK20
73
80
LCD_CLK
122
LCD_HS
125
LCD_VS
126
LCD_DEN
OSD_FB
141
AI
REGULATION
IC1500
VSP9405
8
HS_OSD
6
SDA2 3,3
9
656_CLK
13
SCL2 3,3
AD_656.0
÷
AD_656.7
24
RST3,3
23
VS_DPS_IN
27
CLKF
37
FLB1
69
XOUT
70
XIN
74
CLK20
17
HS_DPS_IN
2
DACY_OUT
79
DACU_OUT
76
DACV_OUT
656_CLK
CLKF
CLK20
DACY_OUT
DACU_OUT
DACV_OUT
X1500
SDA2 3,3
HS_OSD
SCL2 3,3
HS_DPS_IN
VS_DPS_IN
RST3,3
IC1100
SDA5550M
10
SDA1 3,3V
D0
÷
D7
A0
÷
A19
9
SCL1 3,3V
11
SCL2 3,3V
12
SDA2 3,3V
13
BUSREQ
14
RST
15
RESET
24
KEYSCAN
25
AFC
27
SLOW1
PROT1
31
33
RC
AV_LINK_IN
34
SERVICE
37
AV1/AV2
41
STBY_LED
44
52
XTAL2
WR_OUT
64
RD_OUT
65
PSEN_OUT
88
Q1108
Q1109
Q1101
Q1100
RST 5,0
RST 3,3
LEVEL
SHIFTER
Q1103
Q1104
LEVEL
SHIFTER
SCL1 5,0
SDA1 5,0
SCL2 5,0
SDA2 5,0
SDA2 3,3
SCL2 3,3
IC1101
EAROM
6
SCL1 3,3V
5
SDA1 3,3V
Q1107
Q1106
BUSREQ
IC1105
RESET IC
VOUT
1
KEYSCAN
AFC
SLOW1
RC
SLOW2
ST_ON
62
IC1102
SDRAM
RD_OUT
24
D0
÷
D7
A0
÷
A19
IC1103
EPROM
PSEN_OUT
24
D0
÷
D7
A0
÷
A18
WR_OUT
29
AV_LINK_IN
SERVICE
X1100
STBY_LED
SCL2 5,0
SDA2 5,0
RST 5,0
X2000
IC2000
MSP3410
2
SCL2 5,0
3
SDA2 5,0
21
RST 5,0
71
XTAL_IN
72
XTAL_OUT
Q864
Q870
Q871
D866
D867
D868
PROT1
SBY3,3
5,0V
8,0V
Q1207
Q1208
SERVICE
SDA2 5,0
AV_LINK_IN
A6
2
SERVICE
4
5
8
9
SCL
1 5,0
SDA1 5,0
BUS
R
E
Q
SCL
2 5,0
SDA2 5,0
AV2
21 PIN SCART
8
SL
O
O
W2
50
RST
IC1104
RESET IC
VOUT
1
OSD_FB
60
HS_DPS_OUT
29
HS_DPS_OUT
VS_DPS_OUT
30
VS_DPS_OUT
Q1105
A - BOARD
Q860
POWER SUPPLY
22
VS_DPS_OUT
VS_DPS_OUT
23
HS_DPS_OUT
HS_DPS_OUT
9
9
Q1210
A17
K - BOARD
K2
3
3
Q1206
AV_LINK
Q1200
AV_LINK_OUT
Q1201
Q1203
Q1202
AV1/AV2
IC1701
LCD PANEL
INTERFACE
INTERFACE
31
LCD_CLK
27
LCD_HS
28
LCD_VS
30
LCD_DEN
FBL1
14
INV_ON
BACKLIGHT_PWM
BACKLIGHT_PWM
120
Q1713
INV POWER SUPPLY
Q865
INV_PSU_ON
9
9
14
X200
X201
Q200
TRP_ON
TRP_ON
AV1
21 PIN SCART
8
SL
O
O
W1
16
FBL1
10
AV1_SCL
10
AV1_L
INK
TRP_ON
78
TRP_ON
Q1208
Q1208
AV1_LINK
AV1_SCL
AV_LINK
Q1208
AV1/AV2
53
XTAL1
PROT1
26
SLOW2
11
PARTS LOCATION
NOTE:
The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List.
29
4
30
7
3
12
23
19
2
31
13
24
27
11
21
26
20
16
1
10
6
22
18
9
5
17
28
14
8
25
15
12
Click on the first or last page to see other TX-23LX50F / TX-23LX50P service manuals if exist.