DOWNLOAD LG 42LE5500 / 42LE5550 (CHASSIS:LJ03D) Service Manual ↓ Size: 13.1 MB | Pages: 52 in PDF or view online for FREE

Model
42LE5500 42LE5550 (CHASSIS:LJ03D)
Pages
52
Size
13.1 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42le5500-42le5550-chassis-lj03d.pdf
Date
PREV: LG 42LE5500 / 42LE550N / 42LE5510 / 42LE5800 / 42LE5810 / 42LE5900 / 42LE5910 (CHASSIS:LD03E) Service Manual

LG 42LE5500 / 42LE5550 (CHASSIS:LJ03D) 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.
M2_SCLK
C7900
100pF
50V
OPT
R7907
3.3K
Edge
P7901
12507WR-08L
Except Edge(42/47")
1
2
3
4
5
6
7
8
9
S_CS_N
C7905
100pF
50V
OPT
C7914
100pF
50V
OPT
R_VS
M1_MOSI
M2_SCLK
+3.3V_NORMAL
P7900
12507WR-10L
IOP
1
2
3
4
5
6
7
8
9
10
11
M3_MOSI
C7913
100pF
50V
OPT
M0_MOSI
C7902
100pF
50V
OPT
C7904
100pF
50V
OPT
C7909
100pF
50V
OPT
M3_SCLK
C7912
100pF
50V
OPT
M0_SCLK
C7908
100pF
50V
OPT
L_VS
M2_MOSI
C7911
100pF
50V
OPT
C7903
100pF
50V
OPT
C7910
100pF
50V
OPT
C7907
100pF
50V
OPT
R_VS
R7908
3.3K
Edge
C7901
100pF
50V
OPT
S_MOSI
S_SCLK
C7906
100pF
50V
OPT
R7909
3.3K
Edge
M2_MOSI
M1_SCLK
R7916
22
Edge(55")
R7900
22
OPT
R7917
22
Edge(55")
R7901
22
Edge(55")
R7904
22
IOP
R7903
22
IOP
R7911
22
IOP
R7915
22 Edge(55")
R7918
22
IOP
R7914
22 Edge(55")
R7919
22
IOP
R7906
22
IOP
R7912
22 Edge(55")
R7910
22
IOP
R7913
22
IOP
R7905
22
IOP
R7902
22
IOP
GP2_Saturn7M
Interface for LG5111
Ver. 1.0
72
[To MASTER LED DRIVER]
[To SLAVE LED DRIVER]
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
NON_LED_MODEL
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
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
R8067
14K
1%
PD_+3.5V
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
R8064
5.1K
1/16W
5%
NON_PD_+3.5V
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
R8061-*2
22K
1%
POWER 18.5V
R8062-*2
4.7K 1%
POWER 18.5V
C8066
10uF
16V
C8043
10uF
16V
R8046
30K
15
Vout=(1+R1/R2)*0.8
+5V_NORMAL
R2
3A
ST_3.5V-->3.5V
Vout=0.8*(1+R1/R2)
+5V_USB
20V-->3.5V
Power_DET
15V-->3.6V
PANEL_POWER
2A
R1
24V-->3.48V
FROM LIPS & POWER B/D
R2
MAX 350mA
R1
MAX 1500mA
Max 1100 mA
12V-->3.58V
+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
POWER_ON/OFF1
WIRELESS_PWR_EN
R8178
22
WIRELESS_DETECT
OPC_EN
R8126
10K
OPT
R8139
10K
OPT
R8112
10K
TACT_KEY
R8135
22
R8192
22
R8116
22
LED_B/LG_LOGO
R8182
10K
OPT
NEC_EEPROM_SDA
+3.5V_ST
R8127
22
R
8
1
7
7
2
2
C8100
0.1uF
R8115
22
R8134
22
R8124
10K
LCD/PDP
RL_ON
INV_CTL
R8194
22
WIRELESS_SW_CTRL
MODEL1_OPT_2
+3.5V_ST
+3.5V_ST
+3.5V_ST
R8132
22
+3.5V_ST
R
8
1
7
6
2
2
NEC_ISP_Tx
IR
R8125
4.7K
NEC_ISP_Rx
OCD1B
OCD1A
SW8100
JTP-1127WEM
1
2
4
3
R8114
22
MODEL1_OPT_3
R8111
10K
TOUCH_KEY
AMP_RESET_N
FLMD0
MICOM_RESET
POWER_ON/OFF2_2
R8143
10K
NEC_EEPROM_SDA
OCD1A
OCD1A
R8195
22
MICOM_RESET
R8113
22
R8188
22
R
8
1
4
2
2
2
NON_M-REMOTE
+3.5V_ST
+3.5V_ST
KEY1
Q8100
2SC3052
E
B
C
SOC_RESET
MODEL1_OPT_0
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
R8106
10K
R8185
20K
1/16W
1%
C8104
0.1uF
R8184
47K
+3.5V_ST
NEC_ISP_Tx
NEC_RXD
R8128
22
NEC_EEPROM_SCL
SCART1_MUTE
R8133
22
R8110
10K
LCD/OLED
R8104
10K
NEC_TXD
R8181
10K
OPT
R
8
1
4
5
2
2
R8186
20K
1/16W
1%
MODEL1_OPT_1
R8190
22
R8123
10K
OLED/3D
AMP_MUTE
R8189
10K
POWER_ON/OFF2_1
R8108
10K
R8183
10K
OPT
C8103
0.1uF
R
8
1
4
4
2
2
TACT_KEY
HDMI_CEC
R8180
22
R8175
4.7M
R8105
10K
R
8
1
0
0
4
7
K
R8187
22
MODEL1_OPT_1
+3.5V_ST
R8140
47K
OPT
C8107
1uF
R8191
22
R8118
22
KEY2
R8121
10K
PWM_LED
NEC_EEPROM_SCL
OCD1B
FLMD0
R8120
10K
LOGO_BUZZ
R8130
22
NEC_ISP_Rx
MODEL1_OPT_3
R8103
100
NEC_ISP_Tx
EDID_WP
R8102
100
SIDE_HP_MUTE
R8117
22
R8129
22
P8100
12505WS-12A00
1
2
3
4
5
6
7
8
9
10
11
12
13
R8196
22
+3.5V_ST
POWER_DET
NEC_ISP_Rx
R8131
22
R8122
4.7K
OCD1B
R8119
22
R
8
1
7
9
2
2
MODEL1_OPT_0
R8107
10K
R8109
10K
PDP/3D
LED_R/BUZZ
MODEL1_OPT_2
R8193
22
PANEL_CTL
R8136
22
NON_M-REMOTE
X8100
10MHz
R8138
0
GND
GND
SDA1_3.3V
SCL1_3.3V
MICOM_DOWNLOAD
R8146
0
R8101
100
OPC
FLASH_WP
MICOM_DOWNLOAD
SCART1_MUTE
TP8100
C8101
15pF
50V
C8102
15pF
50V
C8108
0.1uF
IC8100
M24C16-WMN6T
3
NC/E2
2
NC/E1
4
VSS
1
NC/E0
5
SDA
6
SCL
7
WC
8
VCC
X8101
32.768KHz
C8105
15pF
50V
C8106
15pF
50V
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
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
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