DOWNLOAD LG 37LD840 (CHASSIS:LJ03B) Service Manual ↓ Size: 9.43 MB | Pages: 50 in PDF or view online for FREE

Model
37LD840 (CHASSIS:LJ03B)
Pages
50
Size
9.43 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
37ld840-chassis-lj03b.pdf
Date
PREV: LG 32LD660 / 32LD665H (CHASSIS:LA05C) Service Manual

LG 37LD840 (CHASSIS:LJ03B) Service Manual ▷ View online

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.
POWER
BCM (EUROBBTV)
+5V_USB
+3.5V_ST
R8018
100
CMO_PSU
L8004
3.6uH
NR8040T3R6N
0
R8035
HD_OPC
Q8001
2SC3052
E
B
C
+12V
R8030
0
AUO_PSU
PANEL_CTL
1:AK10
C8017
0.1uF
OPT
+5V_USB
+3.3V_NORMAL
POWER_ON/OFF2_2
L8010
3.6uH
NR8040T3R6N
0
R8027
LGD_IOP
R8031 0
A_DIM_LGD
POWER_ON/OFF1
R8037
4.7K
OPT
Q8003
2SC3052
E
B
C
C8020
22uF
10V
C8046
100pF
50V
OPT
+12V
P8000
FW20020-24S
NORMAL_26~52
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
R8003
22K
R8019
100
NON_CMO
R8054
5.6K
1%
C8016
100pF
50V
OPT
C8004
0.1uF
16V
C8015
1uF
25V
OPT
Q8000
2SC3052
E
B
C
INV_CTL
+3.5V_ST
C8018
0.1uF
50V
R8009
0
SCAN
R8055
10K
1%
C8040
2200pF
PWM_DIM
R8004
4.7K
C8047
22uF
10V
R8000
10K
0
R8020
NON_SCAN_PSU
R8008
22K
+3.3V_NORMAL
Q8002
RT1P141C-T112
1
2
3
R8074
100
POWER 20V or 24V
0
R8021
AUO_PSU/SHARP_PSU_60
C8007
0.1uF
+5V_NORMAL
C8021
1uF
25V
OPT
OPC_OUT
R8050
10K
R8068
100K
R8012
10K
R8023
6.8K
OPT
C8025
0.1uF
16V
SCAN_BLK1/OPC_OUT
L8001
500
0
R8033
PWM_NON_OPC
R8029
0
CMO_PSU
L8003
MLB-201209-0120P-N2
C8012
1uF
25V
OPT
R8049
12K
R8039
10K
OPT
+12V
R8075
10K
OPT
C8024
68uF
35V
0
R8034
SCAN/FHD_OPC
A_DIM
R8001
47K
RL_ON
ERROR_OUT
L8005
MLB-201209-0120P-N2
+24V
R8053
47K
1%
R8013
10K
POWER_DET
C8019
100pF
50V
OPT
PANEL_VCC
+3.5V_ST
0
R8024
AUO_PSU/SHARP_PSU_52_60
+12V
R8006
22
C8014
1uF
50V
IC8007
NCP803SN293
1
GND
3
VCC
2
RESET
SCAN_BLK2
R8015
0
LD
R8017
6.2K
1%
C8000
100uF
16V
IC8000
MP8706EN-C247-LF-Z
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
C8011
0.1uF
16V
OPT
+24V
V_SYNC
R8002
10K
OPT
R8011 1.8K
C8028
10uF
25V
L8002
MLB-201209-0120P-N2
R8063
12K
1%
PD_+12V
POWER_ON/OFF2_1
C8023
0.1uF
16V
R8032
10K
C8030
10uF
25V
R8022
0
C8049
0.1uF
16V
R8010
10K
+3.5V_ST
C8006
0.1uF
16V
0
R8025
NON_LED_MODEL
+12V
R8016
33K
1%
Q8005
2SC3052
E
B
C
C8008
0.01uF
25V
POWER_ON/OFF2_1
R8066
3.9K
OPT
L8015
3.6uH
IC8005
AOZ1024DI
1
PGND
2
VIN
3
AGND
4
FB
5
COMP
6
EN
7
LX
+12V
D3.3V
C8064
0.1uF
16V
C8063
0.1uF
16V
+3.3V_NORMAL
L8016
CIC21J501NE
R8069
27K
1%
R8070
4.7K
1%
R8071
10K
1%
POWER_ON/OFF2_2
R8036
0
400Hz_VSYNC
R8028
0
400Hz_MO_SCLK
R8005
0
400Hz_MD_MDSI
L_VS
MO_MOSI
MO_SCLK
L8000
CIC21J501NE
L8007
CIC21J501NE
L8013
CIC21J501NE
R8058
20K
R8026
1K
R8045
0
NON_ESD
C8029
22uF
16V
L8006
MLB-201209-0120P-N2
L8011
BLM18PG121SN1D
R8047
3.9K
OPT
C8045
0.1uF
16V
A1.2V
D1.2V
R8040
100K
C8027
0.1uF
+3.5V_ST
R8043
470K
1%
C8036
0.1uF
C8032
0.1uF
L8009
2uH
R8048
910K
1%
C8026
0.1uF
10
R8041
R8042
0
C8035
22uF
D1.8V
L8012
3.6uH
NR8040T3R6N
R8052
10K
0.1uF
C8050
R8051
6.8K
C8042
0.01uF
25V
+3.5V_ST
C8038
0.01uF
25V
C8031
22uF
10V
C8044
100pF
50V
OPT
R8057
10K
1%
C8048
22uF
10V
R8056
10K
1/10W
1%
C8034
0.01uF
25V
L8008
CIC21J501NE
IC8003
AOZ1072AI
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R8007
0
NON_SCAN_LIPS
R8014
0
SHARP_PSU_26_32_52
R8076
0
400Hz_MD_MDSI/42_47_LOCAL DIMMING
M2_MOSI
R_VS
R8078
0
400Hz_VSYNC/42_47_LOCAL DIMMING
M2_SCLK
R8077
0
400Hz_MO_SCLK/42_47_LOCAL DIMMING
L_VS
R_VS
M2_SCLK
MO_SCLK
M2_MOSI
MO_MOSI
C8001
100uF
25V
C8003
0.1uF
50V
C8005
0.1uF
50V
C8009
0.1uF
50V
C8010
10uF
25V
OPT
C8022
0.1uF
50V
C8052
22uF
25V
C8051
0.1uF
50V
C8002
10uF
25V
C8013
4.7uF
50V
R8081
100
R8079
100K
IC8008
NCP803SN293
1
GND
3
VCC
2
RESET
R8061
24K
1%
POWER 20V
R8061-*1
24K
1%
POWER 24V
R8062
5.1K
5%
POWER 20V
R8062-*1
4.3K
1%
POWER 24V
+3.5V_ST
R8080
14K
1%
OPT
IC8002
MP2108DQ
3
LX
2
VIN
4
PGND
1
BST
5
SGND
6
SS
7
FB
8
COMP
9
VREF
10
RUN
IC8001
MP2208DL-LF-Z
3
PGND_1
2
SS
4
SW_1
1
AGND
6
NC
5
IN_1
7
BS
8
VCC
9
POK
10
IN_2
11
SW_2
12
PGND_2
13
EN/SYNC
14
FB
15
EP
P8001
SMAW200-H24S2
SLIM_32~52
19
12V
14
GND
9
3.5V
4
24V
18
INV ON
13
GND
8
GND
3
24V
17
12V
12
3.5V
7
GND
2
24V
16
GND/V-sync
11
3.5V
6
GND
1
PWR ON
20
A.DIM
15
GND
10
3.5V
5
GND
21
12V
22
P.DIM1
23
GND/P.DIM2
24
Err OUT
25
Q8004
AO3407A
G
D
S
R8072
39K
1%
IC8004
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
0.1uF
C8062
0.1uF
C8056
OPT
R8073
18K
1%
A2.5V
L8017
500
R8059
10K
+3.3V_NORMAL
L8014
500
0.1uF
C8055
C8053
10uF
16V
C8058
10uF
16V
C8061
10uF
16V
C8065
0.1uF
16V
ESD
C8039
3300pF
50V
C8041
22uF
10V
C8037
22uF
10V
C8057
22uF
10V
C8059
22uF
10V
R8082
0
400Hz_VSYNC
C8033
1uF
10V
R8060
10K
R8044
10K
R8085
0
SCAN_LIPS
R8084
0
SCAN_PSU
R8083
0
SCAN_PSU
C8067
10uF
10V
C8068
0.1uF
16V
C8054
2200pF
50V
D8000
5.6V
ESD
R8045-*1
100K
ESD
C8069
0.1uF
NON_LED_MODEL
R8064
27K
PD_+3.5V
R8067
1K
1%
PD_+3.5V
R8061-*2
22K
POWER 18.5V
R8062-*2
4.7K
POWER 18.5V
R8064-*1
5.1K
PD_+12V
C8066
10uF
16V
C8043
10uF
16V
R8046
30K
1%
15
<OS MODULE PIN MAP>
PIN No
INV_ON
Vout=(1+R1/R2)*0.8
+5V_NORMAL
R2
3A
ST_3.5V-->3.5V
INV_ON
Vout=0.8*(1+R1/R2)
INV_ON
INV_ON
+5V_USB
Err_out
20V-->3.5V
Power_DET
15V-->3.6V
PANEL_POWER
22
NC
2A
PWM_DIM
R1
24V-->3.48V
FROM LIPS & POWER B/D
AUO
R2
18
V4:VBR-A
V5:NC
SHARP
Err_out
CMO(09)
PWM_DIM
PWM_DIM
PWM_DIM
GND
20
MAX 350mA
A-DIM
R1
MAX 1500mA
A-DIM
Err_out
24
Max 1100 mA
12V-->3.58V
LGD
+3.3V_NORMAL
MAX 3.1A
MAX 2.3A
Vout=0.8*(1+R1/R2)
R1
R2
BCM core 1.2V volt
Placed on SMD-TOP
Vout=0.9*(1+R1/R2)
Replaced Part
R1
C IN
3A
Placed on SMD-TOP
R2
BCM DDR 1.8V
R2
VOUT : 2.533V
A2.5V
Vout=0.8*(1+R1/R2)
R1
not to RESET at 8kV ESD
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.
+3.5V_ST
P8100
12505WS-12A00
1
2
3
4
5
6
7
8
9
10
11
12
13
NEC_ISP_Rx
NEC_ISP_Tx
WIRELESS_DETECT
+3.5V_ST
MODEL1_OPT_0
R8139
10K
OPT
Q8100
2SC3052
E
B
C
R8116
22
KEY1
NEC_ISP_Rx
R8133
22
PANEL_CTL
MODEL1_OPT_1
OCD1A
R8112
10K
TACT_KEY
INV_CTL
R8122
4.7K
1/16W
5%
C8104
0.1uF
HDMI_CEC
NEC_ISP_Tx
R8186
20K
1/16W
1%
C8108
0.1uF
POWER_ON/OFF1
R8196
22
R
8
1
7
7
2
2
R8178
22
SW8100
JTP-1127WEM
1
2
4
3
+3.5V_ST
KEY2
AMP_RESET_N
R8128
22
1/16W
5%
R8131
22
R
8
1
0
0
4
7
K
1/16W
5%
R8138
0
R8124
10K
LCD/PDP
LED_B/LG_LOGO
R8104
10K
R8185
20K
1/16W
1%
R8107
10K
NEC_TXD
R
8
1
4
4
2
2
TACT_KEY
R8103
100
R8143
10K
IC8100
M24C16-WMN6T
3
NC/E2
2
NC/E1
4
VSS
1
NC/E0
5
SDA
6
SCL
7
WC
8
VCC
C8100
0.1uF
R8140
47K
OPT
R8136
22
NON_M-REMOTE
+3.5V_ST
MODEL1_OPT_0
RL_ON
AMP_MUTE
R8132
22
MICOM_RESET
R
8
1
4
5
2
2
FLMD0
MICOM_RESET
MICOM_DOWNLOAD
NEC_EEPROM_SDA
NEC_EEPROM_SCL
R8113
22
FLMD0
R8195
22
R8134
22
R8182
10K
OPT
R8192
22
R8189
10K
POWER_DET
NEC_ISP_Rx
R8123
10K
OLED/3D
R8175
4.7M
MODEL1_OPT_2
R8125
4.7K
1
/
1
6
W
5
%
+3.5V_ST
NEC_RXD
R8184
47K
R8127
22
1/16W
5%
MODEL1_OPT_2
R8188
22
IC8101
UPD78F0513AGA-GAM-AX
NEC_MICOM
1
P60/SCL0
2
P61/SDA0
3
P62/EXSCL0
4
P63
5
P33/TI51/TO51/INTP4
6
P75
7
P74
8
P73/KR3
9
P72/KR2
10
P71/KR1
11
P70/KR0
12
P32/INTP3/OCD1B
13
P31/INTP2/OCD1A
14
P30/INTP1
15
P17/TI50/TO50
16
P16/TOH1/INTP5
17
P15/TOH0
18
P14/RXD6
19
P13/TXD6
20
P12/SO10
21
P11/SL10/RXD0
22
P10/SCK10/TXD0
23
AVREF
24
AVSS
25
ANI7/P27
26
ANI6/P26
27
ANI5/P25
28
ANI4/P24
29
ANI3/P23
30
ANI2/P22
31
ANI1/P21
32
P20/ANI0
33
P130
34
P01/TI010/TO00
35
P00/TI000
36
P140/PCL/INTP6
37
P120/INTP0/EXLVI
38
P41
39
P40
40
RESET
41
P124/XT2/EXCLKS
42
P123/XT1
43
FLMD0
44
P122/X2/EXCLK/OCD0B
45
P121/X1/OCD0A
46
REGC
47
VSS
48
VDD
SIDE_HP_MUTE
SCART1_MUTE
WIRELESS_SW_CTRL
+3.5V_ST
+3.5V_ST
R8190
22
SCL1_3.3V
LED_R/BUZZ
SDA1_3.3V
R8118
22
MODEL1_OPT_3
R8117
22
1/16W
5%
R8183
10K
OPT
R8193
22
+3.5V_ST
SOC_RESET
X8100
10MHz
R8181
10K
OPT
R8110
10K
LCD/OLED
R8105
10K
EDID_WP
R8130
22
R8194
22
OCD1A
+3.5V_ST
OCD1B
R8126
10K
OPT
MODEL1_OPT_1
IR
NEC_EEPROM_SDA
R8119
22
GND
C8107
1uF
R8111
10K
TOUCH_KEY
R8135
22
R8102
100
R8115
22
+3.5V_ST
R
8
1
4
2
2
2
NON_M-REMOTE
R8101
100
OPC
GND
R8120
10K
LOGO_BUZZ
R8129
22
R
8
1
7
9
2
2
POWER_ON/OFF2_1
R8146
0
C8103
0.1uF
SCART1_MUTE
R8108
10K
MICOM_DOWNLOAD
FLASH_WP
R8121
10K
PWM_LED
C8102
15pF
50V
R8187
22
NEC_ISP_Tx
OCD1B
OPC_EN
R8180
22
+3.5V_ST
OCD1B
WIRELESS_PWR_EN
POWER_ON/OFF2_2
NEC_EEPROM_SCL
TP8100
R8114
22
1/16W
5%
C8101
15pF
50V
MODEL1_OPT_3
R8106
10K
R8109
10K
PDP/3D
R8191
22
OCD1A
R
8
1
7
6
2
2
X8101
32.768KHz
MICOM_XTAL_DAISHINKU
X8101-*1
32.768KHz
MICOM_XTAL_EPSON
C
8
1
0
5
1
5
p
F
C8106
15pF
5
0
0
MODEL_OPT_3
1
0
31
LOW_SMALL
1
1
LOGO_BUZZ
LCD/PDP
MODEL OPTION
0
1
PWM_LED
HIGH
PIN NAME
MODEL_OPT_0
OLED
MICOM MODEL OPTION
TBD
8
MODEL_OPT_3
PIN NO.
30
11
1
MODEL_OPT_0
1
TOUCH_KEY
0
3D
LCD/OLED
MODEL_OPT_2
LOW
OLED/3D
MODEL_OPT_2
EEPROM for Micom
0
1
MODEL_OPT_1
0
for Debugger
TACT_KEY
MODEL_OPT_1
LOW
PDP/3D
1
0
PDP
LCD
HIGH
MICOM
GP2_Saturn7M
Ver. 1.4
10Mhz Crystal Ready
FOR ATSC Assy
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.
+3.5V_ST
R8206
3.3K
OPT
R8280
10K
OPT
Q8202
2SC3052
COMMERCIAL_EU
E
B
C
C8209
1000pF
50V
IR_OUT
L8200
BLM18PG121SN1D
+3.5V_ST
LED_B/LG_LOGO
R8212
0
COMMERCIAL_US
R8204
47K
+3.5V_ST
R8213
10K
1%
R8208
22
WIRELESS
C8207
0.1uF
LED_R/BUZZ
C8210
0.1uF
16V
R8224
100
R8209
100
R8218
47K
COMMERCIAL
L8201
BLM18PG121SN1D
P8200
12507WR-12L
1
2
3
4
5
6
7
8
9
10
11
12
13
R8219
47K
WIRELESS
R8216
10K
COMMERCIAL_EU
R8201
0
OPT
R8217
10K
WIRELESS
D8205
5.6V
CDS3C05HDMI1
C8206
0.1uF
R8215
47K
WIRELESS
C8212
100pF
50V
IR_PASS
R8225
100
EYEQ
D8201
5.6V
AMOTECH
+3.5V_ST
+3.5V_ST
C8214
1000pF
50V
OPT
L8203
BLM18PG121SN1D
R8210
100
Q8204
2SC3052
COMMERCIAL
E
B
C
R8226
100
EYEQ
KEY2
+3.5V_ST
+3.5V_ST
Q8205
2SC3052
WIRELESS
E
B
C
D8204
5.6V
CDS3C05HDMI1
IR
C8213
1000pF
50V
OPT
R8221
47K
WIRELESS
C8208
0.1uF
16V
R8227
1.5K
TACT_KEY
R8207
22
COMMERCIAL
+3.5V_ST
D8200
5.6V
AMOTECH
R8214
47K
COMMERCIAL_EU
Q8201
2SC3052
E
B
C
R8200
22
Q8203
2SC3052
WIRELESS
E
B
C
R8205
47K
R8220
47K
COMMERCIAL
R8202
47K
C8211
1000pF
50V
R8203
10K
D8206
5.6V
AMOTECH
R8276
1.5K
KEY1
+3.5V_ST
R8211
10K
1%
+3.3V_NORMAL
Q8200
2SC3052
E
B
C
L8202
BLM18PG121SN1D
NEC_EEPROM_SCL
NEC_EEPROM_SDA
D8209
5.6V
JK8200
XRJV-01V-D12-180
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
L8204
CIC21J501NE
D8212
5.6V
D8211
5.6V
D8207
5.6V
EPHY_TDN
D8208
5.6V
EPHY_ACTIVITY
R8281
510
C8216
1000pF
50V
EPHY_LINK
D3.3V
R8282
510
D8210
5.6V
EPHY_RDP
EPHY_RDN
C8217
1000pF
EPHY_TDP
BCM_RXD1
+3.5V_ST
+3.5V_ST
R8223
4.7K
OPT
R8272 0
R8274 0
C8201
0.1uF
C8202
0.1uF
C8204
0.1uF
R8275 0
JK8201
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
R8222
4.7K
OPT
C8200
0.33uF
R8273 0
IR_OUT
R8277
100
C8205
0.1uF
C8203
0.1uF
NEC_RXD
D8203
30V
CDS3C30GTH
D8202
30V
CDS3C30GTH
IC8200
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
R8278
100
R8279
0
OPT
A2.5V
BCM_TXD1
NEC_TXD
R8283
0
R8284
0
R8285
0
R8286
0
C8218
10pF
50V
OPT
C8220
10pF
50V
OPT
C8222
10pF
50V
OPT
C8221
10pF
50V
OPT
R8287
10K
LD650/LD750
1/16W
5%
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
ETHERNET CONNECT
5 mils trace width with 7 mils air gap on P/N pair.
Trace impedance : 100 ohm differenctial impedance to GND plane
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.
2009.06.18
HDMI
BCM (EUROBBTV)
CK-_HDMI3
D2-_HDMI1
R8338
22
GND
+5V_NORMAL
C8300
0.1uF
D1-_HDMI4
+5V_NORMAL
HDMI_RX1+
D0-_HDMI2
DDC_SDA_1
5V_HPD1
R8326
22K
D1+_HDMI2
D2+_HDMI2
5V_HDMI_3
HDMI_HPD_4
R8308
0
+3.3V_HDMI
JP8305
GND
HDMI_HPD_1
GND
DDC_SDA_4
R8325
1.8K
HDMI_CEC
D0+_HDMI3
CEC_REMOTE
DDC_SDA_1
C8305
0.1uF
DDC_SCL_1
R8348
4.7K
OPT
D2+_HDMI1
R8323
47K
Q8304
KRC104S
HDMI_3
E
B
C
D2-_HDMI4
R8340
22
C8318
0.1uF
16V
R8310
4.7K
HDMI_3
HDMI_CLK-
+3.3V_NORMAL
R8301
1K
HDMI_3
CK+_HDMI1
GND
DDC_SCL_4
D8306
A1
C
A2
HDMI_CLK+
D1-_HDMI2
GND
DDC_SDA_4
D8310
A1
C
A2
CEC_REMOTE
D1-_HDMI4
R8309
4.7K
HDMI_RX1-
D1-_HDMI1
R8318
0
CK+_HDMI4
JK8300
YKF45-7058V
EAG59023302
14
NC
13
CE_REMOTE
5
D1_GND
20
SHIELD
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
D1+_HDMI1
C8309
0.1uF
D0+_HDMI2
R8306
0
HDMI_3
DDC_SCL_4
GND
R8321
4.7K
R8316
1K
Q8307
KRC104S
E
B
C
HDMI_HPD_2
C8322
0.1uF
GND
D0+_HDMI2
DDC_SCL_3
R8304
0
HDMI_HPD_4
D1+_HDMI4
+5V_NORMAL
D0-_HDMI4
+5V_NORMAL
R8313
47K
HDMI_3
R8336
0
SCL2_3.3V
D8303
5.5V
OPT
DDC_SDA_2
DDC_SCL_2
GND
Q8300
KRC104S
E
B
C
+5V_NORMAL
D8300
5.5V
OPT
D2-_HDMI4
D0+_HDMI1
D2-_HDMI2
HDMI_SDA
HDMI_HPD_3
CK+_HDMI3
DDC_SDA_1
CK-_HDMI2
BSS83
Q8308
S
B
D
G
DDC_SDA_4
R8324
1.8K
D1+_HDMI4
D2+_HDMI1
CK+_HDMI1
R8346
0
OPT
CK+_HDMI4
JK8301
YKF45-7058V
EAG59023302
HDMI_3
14
NC
13
CE_REMOTE
5
D1_GND
20
SHIELD
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
JP8303
R8344
12K
5V_HPD4
Q8302
KRC104S
E
B
C
5V_HDMI_2
Q8306
KRC104S
E
B
C
GND
5V_HDMI_4
D8302
5.5V
OPT
GND
C8307
0.1uF
Q8305
KRC104S
E
B
C
DDC_SDA_3
Q8303
KRC104S
E
B
C
DDC_SCL_2
5V_HPD2
D0-_HDMI1
HDMI_RX2+
CK-_HDMI4
5V_HPD2
D0-_HDMI4
+1.8V_HDMI
D1-_HDMI2
C8324
0.1uF
C8321
0.1uF
D8311
5.5V
ESD
D1+_HDMI3
D2+_HDMI4
R8312
47K
R8305
0
HDMI_3
R8343
OPT
0
JP8304
D0-_HDMI3
Q8301
KRC104S
HDMI_3
E
B
C
JP8307
JP8306
D0+_HDMI4
+3.3V_HDMI
D8305
5.5V
OPT
HDMI_RX0+
C8303
0.1uF
16V
DDC_SCL_1
5V_HDMI_1
5V_HDMI_3
D2+_HDMI3
CK+_HDMI3
CK-_HDMI4
5V_HDMI_1
GND
+3.3V_HDMI
R8319
47K
C8316
0.1uF
16V
R8314
47K
HDMI_HPD_3
DDC_SCL_3
D8309
A1
C
A2
5V_HPD4
C8302
0.1uF
16V
5V_HPD3
+3.5V_ST
D0+_HDMI4
HDMI_SCL
R8347
4.7K
OPT
5V_HDMI_3
JP8302
D2-_HDMI3
C8320
0.1uF
D2-_HDMI1
D1-_HDMI3
R8302
1K
R8303
0
5V_HDMI_4
D0-_HDMI1
5V_HDMI_2
D1-_HDMI3
R8311
4.7K
R8327
0
D0+_HDMI1
HDMI_RX0-
CK+_HDMI2
DDC_SDA_2
D8301
5.5V
OPT
CEC_REMOTE
DDC_SDA_2
CK-_HDMI1
D8307
HDMI_3
A1
C
A2
+5V_NORMAL
CK+_HDMI2
D0-_HDMI3
C8304
0.1uF
16V
R8322
47K
CEC_REMOTE
CEC_REMOTE
C8313
0.1uF
16V
D8312
MMBD301LT1G
R8337
0
GND
R8307
0
HDMI_HPD_1
GND
DDC_SCL_4
D8304
5.5V
OPT
HDMI_HPD_2
GND
SDA2_3.3V
DDC_SDA_3
5V_HPD1
GND
R8300
1K
R8317
0
5V_HDMI_2
5V_HDMI_1
R8315
47K
HDMI_3
D2-_HDMI3
D1-_HDMI1
CK-_HDMI2
JK8303
KJA-ET-0-0032 
EAG42463001
14
NC
13
CE_REMOTE
5
D1_GND
20
JACK_GND
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
C8317
0.1uF
16V
D1+_HDMI3
+1.8V_HDMI
GND
D2-_HDMI2
C8306
0.1uF
16V
D1+_HDMI1
C8312
0.1uF
16V
5V_HPD3
R8320
47K
D2+_HDMI2
C8301
0.1uF
16V
DDC_SCL_1
D0+_HDMI3
DDC_SDA_3
JP8300
C8323
0.1uF
16V
JK8302
YKF45-7058V
EAG59023302
14
NC
13
CE_REMOTE
5
D1_GND
20
SHIELD
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
L8300
BLM18PG121SN1D
D2+_HDMI3
C8319
0.1uF
D1+_HDMI2
D0-_HDMI2
C8308
0.1uF
DDC_SCL_3
JP8301
CK-_HDMI1
5V_HDMI_4
D2+_HDMI4
HDMI_RX2-
DDC_SCL_2
CK-_HDMI3
R8335 0
OPT
R8345
0
OPT
R8328
0
OPT
R8339
0
OPT
C8314
0.1uF
16V
C8315
0.1uF
C8310
0.1uF
C8311
0.1uF
IC8300
TDA19997
1
VSS_1
2
OUT_C+
3
OUT_C-
4
VDDO[3V3]
5
OUT_DDC_CLK
6
OUT_DDC_DAT
7
VSS_2
8
VDDDC[1V8]_1
9
RXA_HPD
10
RXA_5V
11
RXA_DDC_DAT
12
RXA_DDC_CLK
13
RXA_C-
14
RXA_C+
15
VDDH[3V3]_1
16
RXA_D0-
17
RXA_D0+
18
VSS_3
19
RXA_D1-
20
RXA_D1+
21
VDDH[3V3]_2
22
RXA_D2-
23
RXA_D2+
24
VDDH[1V8]_1
25
AUX_5V
26
VSS_4
27
TEST1
28
RXB_HPD
29
RXB_5V
30
RXB_DDC_DAT
31
RXB_DDC_CLK
32
RXB_C-
33
RXB_C+
34
VDDH[3V3]_3
35
RXB_D0-
36
RXB_D0+
37
VSS_5
38
RXB_D1-
39
RXB_D1+
40
VDDH[3V3]_4
41
RXB_D2-
42
RXB_D2+
43
VSS_6
44
CDEC_DDC
45
VDDDC[1V8]_2
46
VDDDC[1V8]_4
47
TEST2
48
PD
49
I2C_SDA
50
I2C_SCL
51
RXE_DDC_CLK
52
RXE_DDC_DAT
53
INT_N/MUTE
54
CDEC_STBY
55
VDDS[3V3]
56
VSS_7
57
CEC
58
RXC_HPD
59
RXC_5V
60
RXC_DDC_DAT
61
RXC_DDC_CLK
62
RXC_C-
63
RXC_C+
64
VDDH[3V3]_5
65
RXC_D0-
66
RXC_D0+
67
VSS_8
68
RXC_D1-
69
RXC_D1+
70
VDDH[3V3]_6
71
RXC_D2-
72
RXC_D2+
73
VSS_9
74
R12K
75
VDDH[1V8]_2
76
RXD_HPD
77
RXD_5V
78
RXD_DDC_DAT
79
RXD_DDC_CLK
80
RXD_C-
81
RXD_C+
82
VDDH[3V3]_7
83
RXD_D0-
84
RXD_D0+
85
VSS_10
86
RXD_D1-
87
RXD_D1+
88
VDDH[3V3]_8
89
RXD_D2-
90
RXD_D2+
91
VDDDC[1V8]_3
92
VSS_11
93
OUT_D2+
94
OUT_D2-
95
VDDO[1V8]
96
OUT_D1+
97
OUT_D1-
98
VSS_12
99
OUT_D0+
100
OUT_D0-
D8313
5.6V
CDS3C05HDMI1
ESD
D8314
5.6V
CDS3C05HDMI1
ESD
GND
R8329
33
R8334
33
R8332
33
R8333
33
R8331
33
R8330
33
D8308
5.5V
ESD
R8349
100K
1/16W
5%
LEE GI YOUNG
8
* HDMI CEC
EDID Pull-up
SIDE_HDMI_PORT4
UI_HW_PORT3
HDMI4
UI_HW_PORT1
HDMI2
Ready for TDA19997
HDMI3
HDMI1
UI_HW_PORT2
Place close 
to  TDA9996
Page of 50
Display

Click on the first or last page to see other 37LD840 (CHASSIS:LJ03B) service manuals if exist.

RANDOM: