DOWNLOAD LG 42LV3400-DA (CHASSIS:LT01U) Service Manual ↓ Size: 9.79 MB | Pages: 64 in PDF or view online for FREE

Model
42LV3400-DA (CHASSIS:LT01U)
Pages
64
Size
9.79 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lv3400-da-chassis-lt01u.pdf
Date

LG 42LV3400-DA (CHASSIS:LT01U) Service Manual ▷ View online

THERMAL
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.
C462
0.1uF
16V
C432
0.1uF
16V
R452
330K
1/16W
5%
R465
51K
1%
IC406
AOZ1072AI-3 
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R480
100
PD_+12V
PANEL_VCC
TP5302
C477
0.1uF
16V
C470
0.1uF
16V
C411
0.1uF
16V
V_SYNC
R486
4.7K
OPT
Q408
AO3438
FRC
G
D
S
R440 5.6K
C405
10uF
25V
C476
22uF
10V
R455
15K
1/16W
5%
C416
0.1uF
16V
OPT
C423
100pF
50V
OPT
C413
2200pF
L422
3.6uH
NR8040T3R6N
PWM_DIM
C463
100pF
50V
C441
0.1uF
16V
R476
0
POWER_23_GND
R431
22K
R449
56K
1/16W
1%
+3.5V_ST
C427
100pF
50V
OPT
R445
10K
C407
0.1uF
16V
OPT
C430
10uF
10V
ERROR_OUT
+3.3V_Normal
+3.5V_ST
L420
A_DIM
C431
0.1uF
16V
L413
SCAN_BLK1/OPC_OUT
L417
R407
2.2K
PANEL_DISCHARGE_RES
L412
+3.3V_Normal
R462
10K
1%
C420
22uF
16V
R459
10K
R606
3.9K
PWM_PULL-DOWN
Q402
RT1P141C-T112
1
2
3
R439
33K
C461
10uF
10V
C473
0.1uF
16V
Q409
AO3407A
G
D
S
R415
100
POWER_18_INV_CTL
R416
1.5K
1%
C455
0.1uF
16V
R485
0
POWER_22_A_DIM
R419
1K
R456
10K
Q406
2SC3052
E
B
C
R464
10K
P403
FW20020-24S
NORMAL_EXPEPT_32
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
P401
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
+12V/+15V
C438
0.1uF
16V
IC401
AOZ1073AIL-3 
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R457
47K
1%
C410
10uF
25V
R414
51K
1%
R404
100K
PD_+12V
POWER_ON/OFF2_2
INV_CTL
POWER_ON/OFF2_1
+24V
C451
0.1uF
50V
OPT
1608
R443
10K
FRC
C428
0.1uF
16V
OPT
C408
0.1uF
16V
OPT
R488
100K
L416
TP5305
+12V/+15V
POWER_DET
Q401
2SC3052
E
B
C
R461
4.7K
1%
POWER_ON/OFF2_2
PANEL_CTL
1:AK10
OPC_OUT
+12V/+15V
R401
10K
L415
3.6uH
NR8040T3R6N
C440
0.1uF
16V
C401
100uF
16V
R427
10K
OPT
R463
10K
OPT
0
R484
POWER_20_PWM_DIM
C474
0.1uF
R475
0
POWER_24_GND
R460
27K
1%
R406
4.7K
+2.5V_Normal
C453
22uF
10V
POWER_ON/OFF1
R458
12K
+1.5V_FRC_DDR
C468
0.1uF
16V
C445
4.7uF
OPT
TP5304
SCAN_BLK2
C435
4.7uF
10V
OPT
L423
3.6uH
NR8040T3R6N
+12V/+15V
+3.5V_ST
C406
0.1uF
16V
C444
0.1uF
16V
R405
2.2K
PANEL_DISCHARGE_RES
POWER_ON/OFF2_1
C472
22uF
10V
R466
1.5K
1%
+3.5V_ST
R426
10K
OPT
R434
120K
OPT
R436
7.5K
1/16W
5%
R473
1
R432
330K
1/16W
5%
OLP
C475
0.1uF
16V
L404
MLB-201209-0120P-N2
C404
0.1uF
16V
R467
10K
1%
C439
100pF
50V
L401
C467
4700pF
50V
+24V
+3.5V_ST
R444
22K
1
%
+5V_Normal
+5V_USB
+3.3V_Normal
R410
10K
C412
0.1uF
16V
PD_+12V
RL_ON
+1.5V_DDR
L424
CIC21J501NE
R453
0
POWER_20_A_DIM
+3.5V_ST
+12V/+15V
TP5303
C448
3300pF
50V
Q407
2SC3052
E
B
C
L407
MLB-201209-0120P-N2
+3.3V_Normal
100
R437
POWER_20_ERROR_OUT
R451
0
POWER_18_A_DIM
+3.5V_ST
POWER_ON/OFF2_1
R421
10K
R442
24K
1%
C403
10uF
10V
C402
100uF
16V
P404
FM20020-24
NORMAL_32
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
C442
10uF
16V
OPT
R425
100
POWER_24_INV_CTL
0
R471
POWER_22_PWM_DIM
C426
68uF
35V
R402
100
C436
0.01uF
25V
0.01uF
L406
3.6uH
NR8040T3R6N
R412
0
POWER_16_GND
+12V/+15V
C424
0.1uF
16V
R429
47K
C485
0.1uF
16V
IC402
AZ2940D-2.5TRE1
2
GND
3
VOUT
1
VIN
R441
75K
1/8W
1%
Q405
2SC3052
E
B
C
R430
10K
OPT
+1.26V_VDDC
C418
0.1uF
50V
C471
22uF
10V
R435
22K
L421
3.6uH
NR8040T3R6N
R423
10K
1%
R418
6.8K
OPT
C447
0.1uF
16V
IC405
AOZ1073AIL-3 
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C456
22uF
10V
0
R472
POWER_24_PWM_DIM
100
R420
POWER_24_ERROR_OUT
+1.5V_DDR
C429
100pF
50V
OPT
TP5306
C466
2200pF
IC409-*1
NCP803SN293
PD_+12V_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
IC408-*1
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
IC407
TPS54319TRE
1
VIN_1
3
GND_1
7
COMP
9
SS/TR
10
PH_1
11
PH_2
12
PH_3
13
BOOT
14
PWRGD
15
EN
16
VIN_3
5
AGND
8
RT/CLK
6
VSENSE
4
GND_2
2
VIN_2
17
EP[GND]
R450
0
5%
PD_+3.5V
R482
8.2K
1%
POWER_+24V
R403
1.5K
1%
POWER_+24V
C465
0.01uF
50V
C488
0.01uF
50V
L402
MLB-201209-0120P-N2
L402-*1
CIS21J121
L404-*1
CIS21J121
L407-*1
CIS21J121
R448
2.7K
1%
PD_+12V
R447
1.21K
1/10W
1%
PD_+12V
IC408
APX803D29
PWR_DET_DIODES
1
GND
3
VCC
2
RESET
IC409
APX803D29
PD_+12V_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
C443
10uF
25V
C457
10uF
25V
C458
10uF
25V
C459
10uF
25V
C460
10uF
25V
C409
0.015uF
50V
0.015uF
R454
12K
R413
12K
C469
22uF
16V
C464
2200pF
IC403
SN1007054RTER
1
VIN_1
3
GND_1
7
COMP
9
SS
10
PH_1
11
PH_2
12
PH_3
13
BOOT
14
PWRGD
15
EN
16
VIN_3
5
AGND
8
RT/CLK
6
VSENSE
4
GND_2
2
VIN_2
17
EP[GND]
16
R1
PIN No
LGD edge led error-out use or not? checking is necessary...
INV_ON
New item
26/32/52:GND
24V-->3.78V --> 3.92V (3.79V)
2000 mA
INV_ON
26/32/52:PWM
NC
CMO10"LED
NC
GND
err_out
(PSU)
Vout=(1+R1/R2)*0.8
3A
NC
GND
<LED MODULE PIN MAP -> latest update 20100618>
$ 0.145
err_out
23
GND
GND
18.5V-->3.5V --> 3.75V (3.59V)
NC
SHARP
err_out
INV_ON
err_out
AUO 10"Lamp
NC
4A
INV_ON
A-DIM
MAX 1A
Vout=0.8*(1+R1/R2)
LGD LPB/ 
+3.5V_ST -> 3.375V
23
<MODULE PIN MAP>
INV_ON
GND
+3.3V_Normal
or LIPS
PANEL_POWER
NC
CMO10"Lamp
+5V_Normal
S7M DDR 1.5V
26/32HD:NC
S7M core 1.26V volt
(PSU)
NC
INV_ON
Err_out
PWM_DIM
NC
22
(PSU)
OS LPB
(PSU)
24
AUO 10"LED
18
2A
32LE5300-TA
1934 mA
32LE4500-TA
LGD(PSU)
NC
R1
VBR-A
(PSU)
NC
Err_out
GND
PWM_DIM
20
NC
20V-->3.51V --> 3.76V (3.59V)
60:PWM
INV_ON
300 mA
PWM_DIM
GND
PWM_DIM
NC
INV_ON
Vout=0.8*(1+R1/R2)=1.29V
PWM_DIM
Err_out
LGD 10"LED
12V -->3.58V --> 3.82V (3.68V)
R1
52/60:ERROR
R2
R2
GND
--> NC
GND
ST_3.5V--> 3.375V --> 3.46V
+5V_USB
R2
NC
20
3A
32LE5300-TA
22
$ 0.165
--> NC
IPS-@
16
--> NC
FROM LIPS & POWER B/D
60:NC
Power_DET
R1
R2
18
PWM_DIM
3A
--> NC
1074 mA
24
PWM_DIM
Vout=(1+R1/R2)*0.8
INV_ON
(PSU)
PIN No
+2.5V/+1.8V
R1
+1.5V_DDR_FRC
Vd=550mV
R2
GND
NC
PWM_DIM
NC
(PSU)
Vout=0.827*(1+R1/R2)=1.521V
20101023
GP2R
POWER_LARGE
4
<Module Inv to Main Pin Connection>
INV  <--> MAIN
#11  <--> #24
#12  <--> #18
#13  <--> #20
#14  <--> #22
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
R1057
22
+3.5V_ST
+3.5V_ST
OCD1A
TP1001
NEC_ISP_Tx
POWER_ON/OFF2_1
R1009
10K
PWM_BUZZ/IIC_LED
AMP_RESET
SIDE_HP_MUTE
CEC_ON/OFF
R1034
4.7M
CRYSTAL_KDS
C1002
0.1uF
C1009
1uF
KEY2
NEC_ISP_Rx
NEC_EEPROM_SCL
KEY1
FLMD0
R1065
22
SOC_RESET
AMP_RESET
NEC_SDA
R1010
22
MICOM_DEBUG
OCD1A
MODEL1_OPT_2
R1030
10K
R1090
22
OPT
TP1602
C1003
0.1uF
R1075
10K
TOUCH_KEY
R
1
0
6
0
2
2
NEW_SUB
MODEL1_OPT_2
C1010
0.1uF
R1091 10K
TP1002
OCD1B
+3.5V_ST
S/T_SDA
S7_NEC_RXD
P1001
12505WS-12A00
MICOM_DEBUG
1
2
3
4
5
6
7
8
9
10
11
12
13
R1046
47K
R1049
22
OPT
R1081
22
MICOM_DEBUG
NEC_ISP_Tx
NEC_ISP_Rx
TP1003
OCD1A
OCD1B
R1080
22
IC1001-*1
AT24C16BN-SH-B
EEPROM_NEC_16KBIT_ATMEL
3
NC_3
2
NC_2
4
GND
1
NC_1
5
SDA
6
SCL
7
WP
8
VCC
R1023
22
IC1001
M24C16-WMN6T
EEPROM_NEC_16KBIT_STM
3
NC/E2
2
NC/E1
4
VSS
1
NC/E0
5
SDA
6
SCL
7
WC
8
VCC
TP1601
OLP
C1007
15pF
PANEL_CTL
X1002
32.768KHz
CRYSTAL_EPSON
+3.5V_ST
R1039
22
POWER_ON/OFF2_2
R1066
22
CEC_REMOTE_NEC
NEC_ISP_Tx
R1073
10K
OPT
IC1002
uPD78F0514
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
INV_CTL
R1089
20K
1/16W
1%
CEC_ON/OFF
R1013
22
MICOM_DEBUG
R1020
0
R1071
10K
B/L_LED
X1002-*1
32.768KHz
CRYSTAL_KDS
Q1001
2SC3052
E
B
C
+3.5V_ST
R1078
22
MICOM_DEBUG
R1012
10K
B/L_LAMP
OCD1B
R
1
0
0
1
4
7
K
NEC_EEPROM_SCL
R1048
22
+3.5V_ST
R1019
22
R4035
4.7K
NEW_SUB
R4034
4.7K
NEW_SUB
C1008
15pF
R1006
10K
OPT
R1011
10K
TACT_KEY
+3.5V_ST
+3.5V_ST
R1076
22
MICOM_DEBUG
AMP_MUTE
POWER_ON/OFF1
LED_R/BUZZ
LED_B/LG_LOGO
C1006
0.1uF
S7_NEC_TXD
R1052
10K
NEC_SCL
R1018
22
R1074
10K
GP3
MICOM_RESET
FLMD0
R1047
20K
1/16W
1%
R
1
0
4
1
2
2
R1056
22
R
1
0
3
7
2
2
NEC_ISP_Rx
S/T_SCL
+3.5V_ST
RL_ON
NEC_EEPROM_SDA
MICOM_RESET
EDID_WP
R1055
22
R1043
22
NEW_SUB
PANEL_CTL
R1005
10K
OPT
R1050
10K
R
1
0
6
8
2
2
R1008
22
POWER_DET
R1079
10K
GP2
+3.5V_ST
R1072
10K
OPT
R
1
0
6
9
2
2
R1004
10K
PWM_LED
R1084
10K
OPT
R1083
10K
OPT
IR
R1063
22
R1002
10K
MICOM_DEBUG
NEC_EEPROM_SDA
SCART1_MUTE
GND
R1054
22
19-22_LAMP
R1014
2.7K
R1015
2.7K
HIGH
B/L_LED
PWM_LED
MODEL_OPT_0
TACT_KEY
MODEL_OPT_3
HIGH
MODEL OPTION
PWM_BUZZ/IIC_LED
TOP SIDE for reset.
8
LOW
LOW
32/37/42/47/55LE5300(10)
MODEL_OPT_1
EEPROM for Micom
HIGH
HIGH
LOW
NEC CONFIGURATION
LOW
LOW
MODEL_OPT_2
MODEL_OPT_0
LOW
LD350/450/550
TBD
MODEL_OPT_3
GP2
PIN NO.
HIGH
PIN NAME
LOW
LOW
B/L_LAMP
30
MODEL_OPT_2
MODEL_OPT_3
31
(MODEL_OPT_3)
HIGH
MICOM MODEL OPTION
(MODEL_OPT_0)
LE7300
MODEL_OPT_1
LOW
for Debugger
GP3
HIGH
TOUCH_KEY
LOW
HIGH
MODEL_OPT_0
19/22/26LE3300(5500)
LD420
11
HIGH
MODEL_OPT_1
LOW
HIGH
HIGH
(MODEL_OPT_1)
LOW
LOW
GP2R
MICOM
20101023
5
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.
R2402
100
P2401
12507WR-12L
OLD_SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
P2402
12507WR-15L
NEW_SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
L2404
BLM18PG121SN1D
C2409
18pF
50V
OPT
LED_B/LG_LOGO
R2431
47K
JP2407
Q2406
2SC3052
E
B
C
D902
5.6V
CDS3C05HDMI1
NEW_SUB
C906
18pF
50V
OPT
R2414
1.5K
L2401
BLM18PG121SN1D
D2405
5.6B
KEY1
+3.3V_Normal
JP2410
R2416
10K
OPT
R2405
10K
1%
NEC_EEPROM_SCL
D2402
5.6V
AMOTECH
R2411
100
EYEQ/TOUCH_KEY
IR
C2401
0.1uF
R2412
100
EYEQ/TOUCH_KEY
S/T_SDA
JP2409
C2406
1000pF
50V
R2425
47K
+3.5V_ST
D2403
5.6B
EYEQ/TOUCH_KEY
D2404
5.6B
EYEQ/TOUCH_KEY
Q2405
2SC3052
E
B
C
C2410
0.1uF
16V
OPT
C2405
0.1uF
16V
C2407
100pF
50V
L2403
BLM18PG121SN1D
R2426
3.3K
OPT
R2404
10K
1%
R2430
10K
R2413
1.5K
JP2408
C2404
1000pF
50V
JP2411
D2401
5.6V
AMOTECH
+3.5V_ST
+3.5V_ST
L2402
BLM18PG121SN1D
R2429
47K
KEY2
LED_R/BUZZ
D903
5.6V
CDS3C05HDMI1
NEW_SUB
C907
18pF
50V
OPT
R2427
0
OPT
+3.5V_ST
S/T_SCL
R2401
100
NEC_EEPROM_SDA
+3.5V_ST
C2408
18pF
50V
OPT
C2402
0.1uF
C2403
0.1uF
16V
R2428
22
CONTROL
IR & LED
20101023
6
GP2R
IR/CONTROL-L
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.
SIGN6409
C1453
0.1uF
C1452
10uF
10V
USB1_OCD
SIDE_USB_DP
C1451
22uF
16V
R1459
2K
1/8W
1%
D1451
5.6V
CDS3C05HDMI1
OPT
+5V_USB
USB1_CTL
R1458
2K
1/8W
1%
R1455
4.7K
OPT
SIDE_USB_DM
L1451
MLB-201209-0120P-N2
120-ohm
D1452
5.6V
CDS3C05HDMI1
OPT
R1454
10K
+3.3V_Normal
R1451
47
L1451-*1
CIS21J121
J
K
1
4
5
0
3
A
U
0
4
S
-
3
0
5
-
Z
C
-
(
L
G
)
1
2
3
4
5
IC1450
AP2191DSG
EAN61849601
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
$0.077
USB_DIODES
20101023
GP2R
USB_OCP_DIODE
7
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