LG 72LEX9-CA (CHASSIS:LC03N) Service Manual ▷ View online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
09/10/xx
MOTION_REMOCON
20 100
GP2_BCM_ATSC
+3.3V_NORMAL
R1701 100 OPT
M_REMOTE_RX 9:F3;9:G4
M_REMOTE_TX
9:F3;9:G4
R1702
100
100
L1700
BLM18PG121SN1D
120-ohm
+3.3V_NORMAL
R1700 100 OPT
M_RFMODULE_RESET
9:F3;9:G4
P1700
12507WR-08L
1
2
3
4
5
6
7
8
9
DC
9:F3;9:G3
R1703
100
100
R1704
100
100
DD
9:F3;9:G3
R1706
2.7K
R1707
2.7K
DEMOD_RESET
M_RFMODULE_RESET
R1712
0
0
R1713
100
R1714
100
WIRELESS_DL_RX
WIRELESS_DL_TX
Motion Remocon Interface
Motion Remote controller
ALL M_REMOTE OPTION
U
S
B
D
O
W
N
S
T
R
E
A
M
THERMAL
U
S
B
D
O
W
N
S
T
R
E
A
M
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
USB
C2205
0.1uF
SCL2_3.3V
USB_DP2
+3.3V_USB
USB_DM2
+3.3V_USB
C2201
1uF
10V
1uF
10V
C2211
0.1uF
C2209
1uF
10V
USB_DP1
C2215
0.1uF
OPT
D2204
5.6V
CDS3C05HDMI1
R2212
100K OPT
C2214
4.7uF
4.7uF
R2206
100K
C2203
0.1uF
R2208
0
OPT
R2202
1M
1M
1%
C2207
0.1uF
R2205
100K
+3.3V_USB
R2213
100K OPT
/RST_HUB
C2204
0.1uF
SIDE_USB_DP
C2202
0.1uF
JK2202
KJA-UB-4-0004
1
2
3
4
5
USB_DP2
+3.3V_USB
R2209
100K
100K
OPT
R2210
100K
USB_DM1
/USB_OCD2
C2206
1uF
10V
/USB_OCD1
C2212
0.1uF
R2207
0
OPT
R2204
100K
D2202
5.6V
CDS3C05HDMI1
R2214
0
0
/USB_OCD1
USB_CTL1
USB_DM1
+3.3V_USB
+3.3V_NORMAL
R2203
100K
SDA2_3.3V
SIDE_USB_DM
L2201
BLM18PG121SN1D
D2203
5.6V
CDS3C05HDMI1
C2213
0.1uF
USB_CTL2
D2201
5.6V
CDS3C05HDMI1
R2211
100K OPT
USB_DP1
USB_DM2
USB_CTL1
R2201
12K
1/10W
1%
IC2201
USB2512A_AEZG
1
USBDN1_DM
3
USBDN2_DM
7
NC_2
9
NC_4
10
VDDA33_2
11
TEST
12
PRTPWR1
13
OCS1_N
14
VDD18
15
VDD33CR
16
PRTPWR2
17
OCS2_N
18
NC_5
19
NC_6
20
NC_7
21
NC_8
22
SDA/SMBDATA/NON_REM1
23
VDD33
24
SCL/SMBCLK/CFG_SEL0
25
HS_IND/CFG_SEL1
26
RESET_N
27
VBUS_DET
28
SUSP_IND/LOCAL_PWR/NON_REM0
29
VDDA33_3
30
USBUP_DM
31
USBUP_DP
32
XTAL2
5
VDDA33_1
8
NC_3
6
NC_1
4
USBDN2_DP
2
USBDN1_DP
33
XTAL1/CLKIN
34
VDD18PLL
35
RBIAS
36
VDD33PLL
37
VSS
X2201
24MHz
24MHz
C2208 15pF C2210 15pF
C2218
100uF
16V
C2222
0.1uF
IC2202
AP2191SG-13
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
+5V_USB
R2226
2.7K
2.7K
R2225
0
R2220
4.7K
OPT
4.7K
OPT
+3.3V_NORMAL
C2220
10uF
10V
10uF
10V
L2202
MLB-201209-0120P-N2
120-ohm
JK2201
KJA-UB-4-0004
1
2
3
4
5
R2227
0
R2223
2.7K
2.7K
C2223
0.1uF
R2221
4.7K
OPT
4.7K
OPT
L2203
MLB-201209-0120P-N2
120-ohm
IC2203
AP2191SG-13
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
C2221
10uF
10V
10uF
10V
+5V_USB
C2219
100uF
16V
+3.3V_NORMAL
/USB_OCD2
040:J6
USB_CTL2
USB2 OPTION
USB / DVR Ready
USB
40
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
10.01
LEX9_AMP_WOOFER
61 100
SIGN52296
SIGN52325
SPK_Woofer-
C6123
10uF
35V
10uF
35V
R6111
4.7K
R6108
0
0
OPT
C6101
0.1uF
16V
0.1uF
C6104
16V
R
6
1
0
7
1
0
0
C6108
1000pF
50V
+1.8V_AMP
R6123
0
0
R6120
4.7K
C6112
22pF
50V
22pF
50V
OPT
+24V_AMP
SPK_Woofer+
AUD_MASTER_CLK
R6110
3.3
3.3
OPT
R6101
100
C6124
1uF
25V
C6125
22000pF
50V
0.1uF
C6109
C6129
390pF
50V
POWER_DET
C6122
1uF
25V
R
6
1
1
3
1
0
0
OPT
C6103
100pF
50V
D6100
100V
1N4148W
OPT
L6103
AD-9060
15uH
2S
1S
1F
2F
+24V_AMP
SCL2_3.3V
SDA2_3.3V
L6100
BLM18PG121SN1D
R6116
12
R6105
56
AUD_SCK
R6103
100
R6121
3.3
OPT
R6115
12
+1.8V_AMP
0.1uF
C6132
50V
P6100
FW25001-02(SPK 2P)
1
2
C6117
22000pF
50V
L6101
BLM18PG121SN1D
C6130
0.47uF
50V
0.01uF
C6133
50V
OPT
R6124
0
0
C6128
390pF
50V
R6119
4.7K
R6104
100
C6121
22000pF
50V
C6120
1uF
25V
AMP_MUTE1
C6107
33pF
50V
33pF
50V
C6111
22pF
50V
22pF
50V
OPT
R6106
3.3K
C6110
33pF
50V
33pF
50V
0.1uF
C6116
16V
R6118
12
C6100
10uF
10V
OPT
R6109
100
+1.8V_AMP
AUD_LRCH
C6106
100pF
100pF
D6101
100V
1N4148W
OPT
C6102
10uF
10V
OPT
+3.3V_NORMAL
SPK_Woofer-
R6112
4.7K
C6113
10uF
10uF
10V
OPT
R6100
100
C6127
0.01uF
50V
0.01uF
50V
OPT
L6102
BLM18PG121SN1D
C6119
1000pF
50V
1000pF
50V
C6105
1000pF
50V
0.1uF
C6118
50V
R6122
3.3
OPT
SPK_Woofer+
C6115
22pF
50V
22pF
50V
OPT
C6114
1uF
25V
R
6
1
1
4
1
0
0
OPT
C6126
22000pF
50V
0.1uF
C6131
50V
R6117
12
AMP_RESET_N
0.01uF
C6134
50V
OPT
R6102
100
AUD_LRCK
IC6100
NTP-7100
EAN60969603
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
DGND_1
6
GND_IO
7
CLK_I
8
VDD_IO
9
DGND_PLL
10
AGND_PLL
11
LF
12
AVDD_PLL
13
DVDD_PLL
14
GND
15
DGND_2
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
MONITOR0
23
MONITOR1
24
MONITOR2
25
/FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
57
EP_PAD
Woofer AMP.
Development Item(Slim Depth)
Woofer
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LEX9_IR/232C/ETHERNET_CN
+3.5V_ST
R6206
3.3K
OPT
R6237
10K
OPT
Q6202
2SC3052
COMMERCIAL_EU
E
B
C
C6209
1000pF
50V
IR_OUT
L6200
BLM18PG121SN1D
+3.5V_ST
LED_B/LG_LOGO
R6212
0
0
COMMERCIAL_US
R6204
47K
+3.5V_ST
R6213
10K
1%
R6208
22
WIRELESS
C6207
0.1uF
LED_R/BUZZ
C6210
0.1uF
16V
R6224
100
100
R6209
100
100
R6218
47K
COMMERCIAL
L6201
BLM18PG121SN1D
P6200
12507WR-12L
1
2
3
4
5
6
7
8
9
10
11
12
13
R6219
47K
WIRELESS
R6216
10K
COMMERCIAL_EU
R6201
0
0
OPT
R6217
10K
WIRELESS
D6205
5.6V
CDS3C05HDMI1
C6206
0.1uF
R6215
47K
WIRELESS
C6212
100pF
100pF
50V
IR_PASS
R6225
100
100
D6201
5.6V
AMOTECH
+3.5V_ST
+3.5V_ST
C6214
1000pF
50V
1000pF
50V
OPT
L6203
BLM18PG121SN1D
R6210
100
100
Q6204
2SC3052
COMMERCIAL
E
B
C
R6226
100
100
KEY2
+3.5V_ST
+3.5V_ST
Q6205
2SC3052
WIRELESS
E
B
C
D6204
5.6V
CDS3C05HDMI1
IR
C6213
1000pF
50V
1000pF
50V
OPT
R6221
47K
WIRELESS
C6208
0.1uF
16V
R6227
1.5K
OPT
R6207
22
COMMERCIAL
+3.5V_ST
D6200
5.6V
AMOTECH
R6214
47K
COMMERCIAL_EU
Q6201
2SC3052
E
B
C
R6200
22
Q6203
2SC3052
WIRELESS
E
B
C
R6205
47K
R6220
47K
COMMERCIAL
R6202
47K
C6211
1000pF
50V
R6203
10K
D6206
5.6V
AMOTECH
R6232
1.5K
KEY1
+3.5V_ST
R6211
10K
1%
+3.3V_NORMAL
Q6200
2SC3052
E
B
C
L6202
BLM18PG121SN1D
NEC_EEPROM_SCL
NEC_EEPROM_SDA
D6211 5.6V
L6204
CIC21J501NE
D6212 5.6V
D6210
5.6V
D6207 5.6V
EPHY_TDN
D6209 5.6V
EPHY_ACTIVITY
R6242
510
C6219
1000pF
50V
1000pF
50V
EPHY_LINK
D3.3V
R6243
510
D6208
5.6V
EPHY_RDP
EPHY_RDN
C6220
1000pF
50V
EPHY_TDP
BCM_RXD1
+3.5V_ST
+3.5V_ST
R6223
4.7K
OPT
R6228 0
R6230 0
C6201
0.1uF
C6202
0.1uF
C6204
0.1uF
R6231 0
R6222
4.7K
OPT
C6200
0.33uF
R6229 0
IR_OUT
R6233
100
100
C6205
0.1uF
0.1uF
C6203
0.1uF
NEC_RXD
D6203
30V
CDS3C30GTH
D6202
30V
CDS3C30GTH
IC6200
MAX3232CDR
EAN41348201
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
R6234
100
100
R6235
0
OPT
A2.5V
BCM_TXD1
NEC_TXD
R6241
0
0
R6238
0
0
R6239
0
0
R6240
0
0
C6216
10pF
50V
OPT
C6217
10pF
50V
OPT
C6218
10pF
50V
OPT
C6215
10pF
50V
OPT
R6236
10K
OPT
JK6201
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
JK6701
RS3-21001D1A
1
R1
TCT
2
R2
TD+
3
R3
TD-
4
R4
RD+
5
R5
RD-
6
R6
RCT
7
R7
.
8
R8
.
12
SHIELD
.
9
R9
.
11
R11
.
10
R10
.
L1
L1
Y_CTL
L2
L2
Y_Vin
L3
L3
G_CTL
L4
L4
G_Vin
Zener Diode is
COMMERCIAL
WIRELESS
close to wafer
IR & KEY
RS232C
Adjacent TX/RX differential pairs should be separated by more than
15 mils to each other
15 mils to each other
ETHERNET CONNECT
5 mils trace width with 7 mils air gap on P/N pair.
Trace impedance : 100 ohm differenctial impedance to GND plane
10.02.19
62 100
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