Read LG 22LD350 (CHASSIS:LA04A) Service Manual 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.
+5V_USB
C467
0.1uF
50V
R411
10K
OPT
C482
100pF
50V
OPT
C472
22uF
22uF
10V
R461
4.7K
1%
R456
10K
R452
10
1/10W
1%
+1.8V_DDR
R441
0
IC403
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
POWER_ON/OFF1
POWER_ON/OFF1
L423
3.6uH
NR8040T3R6N
POWER_ON/OFF2_1
C439
100pF
50V
R416
33K
1%
R442
22K 1%
L421
3.6uH
NR8040T3R6N
R444
24K
1%
R464
10K
C463
100pF
50V
L420
CIC21J501NE
R417
6.2K
1%
+5V_USB
+12V/+15V
C429
100pF
50V
OPT
+12V/+15V
C410
0.1uF
0.1uF
R460
27K
1%
C453
22uF
22uF
10V
C444
1uF
10V
L416
+3.5V_ST
L401
IC405
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C423
100pF
50V
OPT
C430
22uF
22uF
10V
C424
0.1uF
16V
0.1uF
16V
+1.26V_VDDC
C473
0.1uF
16V
0.1uF
16V
C457
10uF
25V
10uF
25V
+3.3V_Normal
C448
0.1uF
50V
R455
0
C461
22uF
22uF
10V
0.1uF
C456
R432
75K
75K
1/8W
1%
C405
10uF
25V
10uF
25V
C459
10uF
25V
10uF
25V
L413
C465
1uF
10V
0.1uF
C476
R436
10
1/10W
1%
C428
0.1uF
16V
0.1uF
16V
C464
2200pF
C414
1uF
50V
1uF
50V
+3.5V_ST
R454
9.1K
L406
3.6uH
NR8040T3R6N
POWER_ON/OFF1
IC407
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
R410
10K
10K
R462
10K
1%
L415
3.6uH
NR8040T3R6N
IC401
MP8706EN-C247-LF-Z
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
R445
10K
OPT
C420
22uF
10V
22uF
10V
C469
22uF
10V
22uF
10V
L424
CIC21J501NE
C485
0.1uF
16V
0.1uF
16V
R487
22
22
C478
0.1uF
50V
0.1uF
50V
C479
2.2uF
19"~22"
50V
R469
0
26"~32"
2012
C481
0.1uF
50V
0.1uF
50V
C480
0.01uF
50V
RL_ON
R476
0
0
1/10W
19"~22"
2012
+24V/+15V
+12V
R477
0
0
26"~32"
2012
R428
2.2K
2.2K
19"~22"
AMP_VCC
R468
22K
22K
19"~22"
+12V/+15V
Q411
19"~22"
RT1C3904-T112
E
B
C
Q407
2SC3052
2SC3052
E
B
C
C436
0.01uF
25V
+5V_Normal
L412
12V_PANEL
Q406
2SC3052
2SC3052
E
B
C
R435
22K
R440 1.8K
12V_PANEL
R439-*1
22K
5V_PANEL
R440-*1
2.7K
5V_PANEL
PANEL_VCC
C455
0.1uF
16V
0.1uF
16V
C451
1uF
25V
25V
PANEL_CTL
1:AK10
C438
0.1uF
16V
0.1uF
16V
R429
47K
47K
L411
5V_PANEL
C442
10uF
16V
16V
OPT
R439
10K
12V_PANEL
R431
22K
R430
10K
10K
OPT
+12V/+15V
C443
4.7uF
4.7uF
16V
R450
14K
1%
PD_+3.5V
R448-*1
16K
PD_+15V
+12V/+15V
R446
30K
1%
PD_+24V
R480
100
100
OPT
IC408
NCP803SN293
1
GND
3
VCC
2
RESET
IC409
NL17SZ08DFT2G
OPT
3
2
4
1
5
R488
100K
100K
+24V/+15V
POWER_DET
+3.5V_ST
R481
3K
R482
20K
+12V
R463
10K
OPT
R446-*1
24K
PD_+20V
R483
10K
C483
0.1uF
0.1uF
+3.5V_ST
+3.5V_ST
R447
5.1K
1/16W
5%
EXCEPT_PD_+3.5V
R448
12K
1%
PD_+12V
R423
0
1/4W
3216
R406
4.7K
4.7K
R453
0
LGD_26"~32"
0
R472
AUO
OPC_OUT
P403
FW20020-24S
FW20020-24S
NORMAL_26~32
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/OLP
11
3.5V
6
GND
1
PWR_ON
20
A.DIM
15
GND
10
3.5V
5
GND
21
12V
22
P.DIM
23
GND
24
Err_OUT/NC
0
R471
NON_AUO_26"~32"
0
R420
LGD
Q401
2SC3052
2SC3052
E
B
C
L404
MLB-201209-0120P-N2
C407
0.1uF
16V
16V
0
R437
AUO/SHARP
+24V/+15V
C419
1uF
25V
1uF
25V
OPT
R418
6.8K
OPT
L407
MLB-201209-0120P-N2
C418
0.1uF
50V
C401
100uF
16V
P402
SMAW200-12
NORMAL_19~22
1
+15V
2
+15V‘
3
GND
4
GND
5
+3.5V_ST
6
3.5V_ST
7
GND
8
OLP
9
INV_EN
10
PWM_DIM
11
A_DIM
12
NC
+3.3V_Normal
+3.5V_ST
+3.5V_ST
C426
68uF
35V
35V
R421
10K
10K
+3.5V_ST
C416
0.1uF
0.1uF
OPT
R401
10K
26"~32"
C404
0.1uF
16V
C402
100uF
16V
L402
MLB-201209-0120P-N2
R413
0
0
19"~22"
PWM_DIM
A_DIM
ERROR_OUT
C406
0.1uF
16V
0.1uF
16V
C408
0.1uF
16V
0.1uF
16V
R486
4.7K
0
R424
NON_OPC
Q402
RT1P141C-T112
1
2
3
RL_ON
Q405
2SC3052
E
B
C
0
R470
LGD_OPC
R426
10K
10K
R427
10K
OPT
OLP
+12V
INV_CTL
+3.3V_Normal
+3.5V_ST
C400
0.1uF
16V
0.1uF
16V
+3.3V_AVDD_MPLL
L400
BLM18PG121SN1D
L417
R459
10K
C477
0.1uF
16V
0.1uF
16V
C471
22uF
10V
22uF
10V
R465
51K
5%
C458
10uF
25V
10uF
25V
+5V_Normal
R467
10K
1%
POWER_ON/OFF1
L422
3.6uH
NR8040T3R6N
+12V/+15V
C466
2200pF
C460
10uF
25V
10uF
25V
R466
1.5K
1%
C427
100pF
50V
OPT
IC406
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
R419
1K
1K
R412
1K
26"~32"
R9825
1K
Sharp
C403
0.1uF
16V
0.1uF
16V
C411
0.1uF
16V
0.1uF
16V
C9809
22uF
10V
22uF
10V
C9810
22uF
10V
22uF
10V
POWER_ON/OFF1
+3.3V_Normal
R407
10K
OPT
R408
10K
OPT
R457
15K
5%
R449
12K
12K
1/10W
5%
R414
0
0
19"~22"
R409
0
0
19"~22"
R479
0
0
Q410
19"~22"
AO3407A
G
D
S
Q409
AO3407A
G
D
S
+3.3V_Normal
R434
10K
OPT
R451
22K
OPT
R473
22K
22K
OPT
R438
10K
10K
R443
47K
47K
OPT
Q400
2SC3052
2SC3052
OPT
E
B
C
R405
0
0
19"~22"
R400
0
0
OPT
R402
100K
R415
100K
OPT
R422
120K OPT
R425
120K
120K
OPT
R403
33K
33K
OPT
R404
33K
33K
OPT
R433
33K
OPT
+3.3V_Normal
R474
10K
10K
R475
10K
OPT
+3.3V_Normal
R458
9.1K
IC400
TJ3965S-3.3V-3L
GND
OUT
IN
R2
R2
3A
Placed on SMD-TOP
Vout=0.8*(1+R1/R2)
3A
Placed on SMD-TOP
+5V_USB
C IN
1074 mA
S7M DDR 1.8V
3A
1934 mA
Vout=(1+R1/R2)*0.8
Placed on SMD-TOP
R2
Placed on SMD-TOP
R1
Replaced Part
R1
R1
R1
Close to IC
Vout=(1+R1/R2)*0.8
MAX 2000mA
2026 mA
Close to IC
C IN
Vout=0.8*(1+R1/R2)
Replaced Part
S7M core 1.26V volt
3A
+3.3V_Normal
R2
+15V Control
New item
PANEL_POWER
UNDER CHECKING
12V-->3.58V
20V-->3.5V
15V-->3.6V
Power_DET
ST_3.5V-->3.5V
24V-->3.48V
INV_ON
20
GND
18
A-DIM
PWM_DIM
PWM_DIM
LGD
Err_out
AUO
PWM_DIM
<OS MODULE PIN MAP>
Err_out
24
INV_ON
22
INV_ON
Err_out
V4:VBR-A
V5:NC
V5:NC
A-DIM
PWM_DIM
FROM LIPS & POWER B/D
SHARP
NC
PIN No
INV_ON
CMO(09)
Power Block
LD350
09.09.03
2
+3.3V_AVDD_MPLL
Vout=0.8*(1+R1/R2)
Vout=0.8*(1+R1/R2)
MAX 1A
+5V_Normal
R2
R1
3A
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