DOWNLOAD LG 32LV3400-SG (CHASSIS:LJ01M) Service Manual ↓ Size: 23.23 MB | Pages: 35 in PDF or view online for FREE

Model
32LV3400-SG (CHASSIS:LJ01M)
Pages
35
Size
23.23 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lv3400-sg-chassis-lj01m.pdf
Date
PREV: LG 32LV3400-SA (CHASSIS:LJ01U) Service Manual

LG 32LV3400-SG (CHASSIS:LJ01M) 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.
M
D
L
6
1
9
3
0
0
0
1
G
A
S
5
6.5T_GAS5
M
D
L
6
1
9
3
0
0
0
1
G
A
S
3
6.5T_GAS3
M
D
L
6
1
9
3
0
0
0
1
G
A
S
6
6.5T_GAS6
M
D
L
6
1
9
3
0
0
0
1
G
A
S
2
6.5T_GAS2
M
D
L
6
1
9
3
0
0
0
1
G
A
S
1
6.5T_GAS1
M
D
L
6
1
9
3
0
0
0
1
G
A
S
7
6.5T_GAS7
M
D
L
6
1
9
3
0
0
0
1
G
A
S
4
6.5T_GAS4
SMD_GAS
20110324
20
GP3_S7LR
SMD GASKET
THERMAL
THERMAL
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.
ERROR_OUT
Q7505
2SC3052
E
B
C
C7545
0.1uF
50V
Adapter
R7531-*1
2.7K
5V_PANEL
+5V_Normal
C7532
10uF
25V
Adapter
PANEL_CTL
IC7502
MP8670DN-LF-Z
Adapter
3
VCC
2
BST
4
BG
1
SW
5
GND
6
FB
7
EN/SYNC
8
IN
IC7861
AOZ1072AI-3 
+5V_TUNER
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R7863
2.2K
OPT
C403
10uF
10V
C7958
0.1uF
16V
R7583
0
1/10W
5%
LIPS
1608
R7543
30K
1/10W
1%
Adapter
+12V/+15V
L7912
MLB-201209-0120P-N2
Adapter
+3.5V_ST
C7960
0.1uF
16V
+5V_TUNER
D7500
MBRA340T3G
Adapter
C405
10uF
25V
+24V_LED
C439
100pF
50V
R400
0
OPT
R7540
120K
1%
Adapter
C444
0.1uF
16V
R7572
0
NON_Adapter
POWER_ON/OFF_1
C476
0.1uF
16V
POWER_DET
R445
2.2K
+5V_Normal
PANEL_VCC
10uF
C461
10V
RL_ON_BUFFER
C7509
0.1uF
16V
OPT
C7565
100pF
50V
5V_PANEL
C7578
0.1uF
16V
5V_PANEL
C7959
0.1uF
16V
LIPS
+5V
+1.10V_VDDC
C7537
10uF
25V
Adapter
C7547
0.1uF
16V
Q7503
2SC3052
OPT
E
B
C
+24V/+15V
C7865
22uF
16V
+5V_TUNER
R7862
22K
Adapter
C7550
10uF
25V
5V_PANEL
L413
R7523
22K
OPT
R607
11K
1%
OLP
C7515
68uF
35V
NON_Adapter
R428
10K
L7503-*1
CIS21J121
C7570
0.1uF
16V
5V_PANEL
C7522
1uF
50V
Adapter
L7503
MLB-201209-0120P-N2
NON_Adapter
C7927
0.1uF
50V
R7866
12K
+5V_TUNER
RL_ON_BUFFER
C435
0.1uF
16V
C425
0.1uF
16V
C7861
10uF
25V
+5V_TUNER
R7529
100K
Adapter
+1.5V_DDR
C440
0.1uF
16V
C492
22uF
16V
OPT
R446
10K
OPT
R7865
0
Adapter
R7957
330
1/10W
+5V_TUNER
C494
1uF
10V
R465
24K
1%
+5V_TUNER
R7581
1.6K
1/8W
1%
Adapter
R7548
2.7K
1%
Adapter
1608
+5V
+3.5V_ST
+12V/+15V
C453
22uF
10V
C7501
0.1uF
50V
C7543
0.1uF
50V
Adapter
IC407
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
C489
100pF
R7515
10K
R7561
100K
+12V/+15V
C7502
0.1uF
50V
+24V/+15V
L7502-*1
CIS21J121
C420
22uF
16V
Q403
RSR025P03
S
D
G
R7571
22
Adapter
C7527
0.1uF
50V
Adapter
L415
3.6uH
NR8040T3R6N
INV_CTL
C7541
0.1uF
50V
OPT
R433
10K
C7928
0.01uF
50V
C7519
1uF
25V
Adapter
R7548-*1
1.21K
1%
LIPS
1608
L7914
BLM18PG121SN1D
NON_Adapter
1608
C7926
0.01uF
50V
Adapter
C7867
0.1uF
16V
+5V_TUNER
R7521
47K
OPT
L425
BLM18PG121SN1D
NON_5V_PANEL
IC403
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]
RL_ON_BUFFER
POWER_ON/OFF_1
C423
4.7uF
16V
OPT
R7559
12K
5V_PANEL
JK7500
JPD003N-M432-4F
Adapter
GND
SW
24V
P7500
SMAW200-12
NON_Adapter
1
+15V
2
+15V
3
GND
4
GND
5
+3.5V_ST
6
+3.5V_ST
7
GND
8
OLP
9
INV_ON
10
P_DIM
11
A_DIM
12
NC
C7961
22uF
16V
+5V_TUNER
+3.5V_ST
L7508
4.7uH
SP-7850_4.7
Adapter
L420
BLM18PG121SN1D
C7866
0.1uF
16V
+5V_TUNER
R7525
68K
1/16W
5%
Adapter
C7542
3.3uF
50V
Adapter
C7505
0.01uF
50V
R7519
22
1/16W
5%
Adapter
R7566
1.5K
1%
5V_PANEL
R473
1
R7503
22K
L7862
3.6uH
NR8040T3R6N
+5V_TUNER
R7511
6.8K
OPT
Q7506
AO3407A
G
D
S
R7585
100K LIPS
C7922
0.1uF
16V
5V_PANEL
+24V/+15V
C7925
2.2uF
Adapter
50V
R7516
10K
C7933
0.01uF
50V
R7500
10K
Adapter
C7507-*1
3.9K
PWM_PULL_DOWN
110
R7956
1/10W
+5V_TUNER
R410
10K
L7861
+5V_TUNER
R436
15K
C7536
3.3uF
50V
Adapter
C456
22uF
10V
R7530
33K
12V_PANEL
C7507
1uF
6.3V
OPT
R7531
5.6K
12V_PANEL
C448
3300pF
50V
C447
0.1uF
16V
Q7504
SI4124DY-T1-GE3(VISHAY)
Adapter
3
S_3
2
S_2
4
G
1
S_1
5
D_1
6
D_2
7
D_3
8
D_4
C7526
0.1uF
16V
L7504-*1
CIS21J121
C7538
10uF
10V
Adapter
L7505
5V_PANEL
+3.3V_Normal
C7552
10uF
25V
5V_PANEL
L7913
CPI2520NHL3R3ME
Adapter
2520
3.3uH
+24V_LED_driver
+3.3V_Normal
+24V/+15V
+3.5V_ST
L7912-*1
CIS21J121
+3.5V_ST
C7921
0.1uF
16V
+5V_TUNER
FB_CORE
R7565
51K
1%
5V_PANEL
+3.3V_Normal
R434
10K
R7505
4.7K
L7514
3.6uH
NR8040T3R6N
5V_PANEL
R7580
0
C7924
0.1uF
50V
Adapter
R7584
27K
1/16W
1%
OPT
R7958
1
+5V_TUNER
C7533
0.1uF
50V
Adapter
R7861
27K
Adapter
+2.5V_Normal
C7514
0.1uF
50V
C7540
3.3uF
50V
Adapter
+5V_USB
C7862
10uF
25V
+5V_TUNER
Q400
2SC3052
E
B
C
C7517
68uF
35V
+24V_LED_driver
C7511
0.1uF
16V
NON_Adapter
+24V/+15V
+24V_LED
R7860
10K
Adapter
IC7952
AP1117EG-13 
+5V_TUNER
1
ADJ/GND
2 OUT
3
IN
+12V/+15V
R
4
4
1
5
6
K
1
/
1
6
W
1
%
R7501
27K
R416
56K
1%
L7509
3.6uH
NR8040T3R6N
Adapter
C431
0.1uF
16V
C7525
0.01uF
25V
0.01uF
R457
4.3K
1/16W
1%
C7504
0.015uF
50V
0.015uF
R7582
100
1%
+3.3V_Normal
C493
3300pF
50V
IC7512
NCP803SN293
LIPS_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
IC7509
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
R
4
5
6
4
.
7
K
1
/
1
6
W
1
%
R7538
6.8K
1%
Adapter
R7588
100
C7566
22uF
16V
5V_PANEL
C437
22uF
16V
L7504
MLB-201209-0120P-N2
Adapter
C7544
0.1uF
50V
Adapter
C472
22uF
10V
Q7521
Adapter
AO3407A
G
D
S
+3.5V_ST
560pF
C467
50V
C7864
100pF
50V
OPT
C7932
3.3uF
50V
C7506
1uF
6.3V
OPT
C475
0.1uF
16V
R7517
10K
OPT
C7863
2200pF
+5V_TUNER
+3.5V_ST
R7537
100K
1/8W
5%
C7503
2.2uF
50V
L401
+5V_Normal
C7531
10uF
25V
C7560
2200pF
5V_PANEL
+5V_TUNER
R
4
4
2
2
7
K
1
/
1
6
W
1
%
R7870
10K
1%
+5V_TUNER
R423
12K
1%
R7832
10K
NON_Adapter
+24V
R432
330K
1/16W
5%
C432
0.1uF
16V
C7524
220pF
50V
Adapter
R7864
2.2K
OPT
R7527
22K
OPT
L7502
MLB-201209-0120P-N2
NON_Adapter
R7514
1K
R7547-*1
3.9K
1%
LIPS
1608
R7586
100
1%
LIPS
C7962
0.1uF
16V
+5V_TUNER
L7517
12V_PANEL
Q7501
AO3407A
G
D
S
R443
10K
R7547
15K
1%
Adapter
1608
C7571
10uF
10V
Adapter
R7867
10K
+5V_TUNER
L406
3.6uH
NR8040T3R6N
L403
BLM18PG121SN1D
IC7503
MP4460DQ-LF-Z
Adapter
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
R7522
10K
R7542
22K
OPT
Q7502
2SC3052
E
B
C
R7569
10K
OPT
PWM_DIM
A_DIM
+3.5V_ST
P7501
SM14B-SRSS-TB
Adapter
1
24V
2
24V
3
24V
4
24V
5
24V
6
GND
7
GND
8
GND
9
GND
10
GND
11
ERROR_OUT
12
INV_ON
13
NC
14
PWM_DIM
15
GND
+3.3V_Normal
C441
0.1uF
16V
C430
10uF
10V
C445
0.1uF
16V
OPT
C7529
10uF
16V
OPT
R7530-*1
22K
5V_PANEL
R7570
18K
Adapter
IC7507
AOZ1072AI-3 
5V_PANEL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+12V/+15V
R7560
10K
5V_PANEL
+12V/+15V
R466
51K
1%
+5V_TUNER
R7567
10K
1%
5V_PANEL
R438
22K
L424
BLM18PG121SN1D
5V_PANEL
R7544
100K
1/10W
1%
Adapter
C413
0.1uF
R608
0
1/16W
5%
IC402
TJ3940S-2.5V-3L
GND
VOUT
VIN
C488
3300pF
50V
R7524
10K
R7507
4.7K
RL_ON_BUFFER
Q7507
2SC3052
E
B
C
+3.5V_ST
R7508
0
OPT
R7504
10K
OPT
R7506
10K
R7509
10K
RL_ON
+3.5V_ST
Q7508
RT1P141C-T112
1
2
3
R7502
10K
OPT
IC401
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
C7957
0.1uF
16V
OPT
R7864-*1
3K
PANEL_DISCHARGE_RES
R7863-*1
3K
PANEL_DISCHARGE_RES
R7512
10K
OLP
+2.5V_Normal
C424
1uF
25V
OPT
R7513
22
OLP
Q7500
MMBT3904(NXP)
E
B
C
Q7520
Adapter
MMBT3904(NXP)
E
B
C
S7LR Small
POWER
22
2011.03.02.
R2
AMP_VCC Control
real output : 12.3V
R1
S7LR core 1.2V volt
Placed on SMD-TOP
R1
R2
AO3407A Vgs : 8.3V(15V input)
15V-->3.56V
4A
Power_DET
AMP_VCC
Vout=0.827*(1+R1/R2)=1.225V
4A -> 3A modify 090916
close to IC7502
R1
AO3407A Vgs : 10.8V
090916
$ 0.165
LED Driver Power
780 mA
R1
+3.3V_Normal
2A
R2
AO3407A Vgs : 10.8V(24V input)
R1
2000 mA
+5V_Normal(only for 5V PANEL)
24V->3.5V
+5V_USB
3A
2A
ST_3.5V-->3.5V --> 3.375V
$0.148
Vout=(1+R1/R2)*0.765=5.03V
24V->15V
R2
1.5A‘
3.3K -> 1K (threshold voltage up)
Vout=0.8*(1+R1/R2)
R2
PANEL_POWER
Vd=550mV
R1
Max 1000mA
+2.5V/+1.8V
300 mA
+1.5V_DDR
R2
Vout=0.8*(1+R1/R2)=1.5319
Vout=(1+R1/R2)*0.8
+5V_TUNER(only for 5V Tuner)
2A
Max 1A
LDO for Tuner
24V-->3.48V
6.8V
New item
Switching noise reducing [MPS recommend]
$0.37
close to pin
$0.21
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.
D2404
5.6V
EYEQ/TOUCH_KEY
C7600
0.1uF
16V
19-22_LAMP
D7600
5.6V
19-22_LAMP
C906
18pF
50V
OPT
R2414
1.5K
R2428
22
JP2407
SENSOR_SCL
SENSOR_SDA
L2403
BLM18PG121SN1D
R2431
47K
OPT
D7601
5.6V
19-22_LAMP
D2402
5.6V
AMOTECH
D903
5.6V
CDS3C05HDMI1
NEW_SUB
C2408
18pF
50V
OPT
C2402
0.1uF
Q2405
2SC3052
OPT
E
B
C
+3.5V_ST
LED_R/BUZZ
R2401
100
Q2406
2SC3052
OPT
E
B
C
C2407
100pF
50V
KEY2
C7601
0.1uF
16V
19-22_LAMP
L7601
BLM18PG121SN1D
19-22_LAMP
C2410
0.1uF
16V
OPT
C2405
0.1uF
16V
S/T_SCL
JP2409
+3.5V_ST
+3.5V_ST
+3.5V_ST
+3.5V_ST
C2409
18pF
50V
OPT
LED_B/LG_LOGO
D2405
5.6V
R2429
47K
OPT
R2425
47K
OPT
C2403
0.1uF
16V
R2402
100
S/T_SDA
C2406
1000pF
50V
JP2408
P7600
12507WR-03L
19-22_LAMP
1
2
3
4
R2412
100
EYEQ/TOUCH_KEY
P2401
12507WR-12L
OLD_SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
C2401
0.1uF
R2413
1.5K
IR
D2403
5.6V
EYEQ/TOUCH_KEY
L2404
BLM18PG121SN1D
R2411
100
EYEQ/TOUCH_KEY
L7600
BLM18PG121SN1D
19-22_LAMP
R2405
10K
1%
D902
5.6V
CDS3C05HDMI1
NEW_SUB
L2402
BLM18PG121SN1D
JP2410
+3.3V_Normal
C907
18pF
50V
OPT
R2427
0
KEY1
P2402
12507WR-15L
NEW_SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
R2426
47K
R2416
10K
OPT
JP2411
C2404
1000pF
50V
R2404
10K
1%
D2401
5.6V
AMOTECH
R2430
10K
OPT
L2401
BLM18PG121SN1D
6
IR/CONTROL
S7LR.Small
2011.03.02.
IR & LED
CONTROL
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.
C700
10uF
16V
OPT
RXA1+
RXACK+
R710
10K
OPT
RXACK-
RXA0-
RXB0-
RXA4-
PANEL_VCC
C7903
0.1uF
16V
HD_60Hz_NORMAL
RXA0+
SMALL_OPC_EN
RXB0+
RXACK-
C710
0.1uF
16V
WAFER_FHD
RXB1+
SMALL_NC4
RXB3+
P703
FI-RE51S-HF-J-R1500 
WAFER_FHD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
RXA1-
RXA0+
SMALL_NC4
RXA0+
RXA3+
+3.3V_Normal
RXA1-
RXA2+
RXA3-
C7907
1000pF
50V
OPT
SMALL_OPC_OUT
C7904
1000pF
50V
OPT
SMALL_NC2
RXB4-
RXBCK+
SMALL_NC1
C7905
10uF
16V
OPT
SMALL_NC1
RXA2+
RXA2+
RXACK+
SMALL_OPC_OUT
RXB3-
RXB1-
RXBCK-
RXA3-
R709
10K
BIT_SEL_LOW
PANEL_VCC
R7914 0
HD_60Hz_NORMAL
RXA0-
L702
120-ohm
WAFER_FHD
RXA1+
R7915
0
OPT
RXA3-
L7901
120-ohm
HD_60Hz_NORMAL
SMALL_NC2
RXB2+
C709
1000pF
50V
OPT
+3.3V_Normal
RXA2-
RXACK+
RXA1-
R7919
3.3K
OPT
SMALL_NC3
L7902
120-ohm
HD_60Hz_SMALL
R7920
10K
OPT
RXA4+
R705
3.3K
OPT
RXB4+
RXA2-
RXA3+
P7901
FF10001-30
HD_60Hz_NORMAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
RXA3+
RXA1+
C7906
0.1uF
16V
HD_60Hz_SMALL
SMALL_NC3
P7902
FF10001-30
HD_60Hz_SMALL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
C7908
10uF
16V
OPT
PANEL_VCC
RXA2-
RXA0-
RXB2-
SMALL_OPC_EN
RXACK-
LVDS.Small
24
S7LR.Small
2011.03.02.
[30Pin LVDS Connector]
 (For HD 60Hz_Normal)
BIT_SEL
[30Pin LVDS Connector]
 (For HD 60Hz_Small)
LVDS_SEL
[51Pin LVDS Connector]
 (For FHD 60/120Hz)
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