Read LG 26LH250C (CHASSIS:LD01X) 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.
+12V/+15V
C467
0.1uF
50V
+24V
R430
10K
10K
OPT
+3.5V_ST
L417
C472
22uF
22uF
10V
R461
4.7K
1%
C401
100uF
16V
+3.5V_ST
R415
100
100
POWER_18_INV_CTL
R456
10K
R452
10
1/10W
1%
+1.5V_DDR
+2.5V_Normal
R421
10K
10K
R447
5.1K
1/16W
5%
PD_+12V
R441
0
NON_FRC
IC403
MP2212DN
NON_FRC
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
POWER_ON/OFF2_2
C408
0.1uF
16V
0.1uF
16V
POWER_ON/OFF1
R401
10K
L423
3.6uH
NR8040T3R6N
POWER_ON/OFF2_1
C432
0.1uF
16V
0.1uF
16V
PANEL_VCC
C439
100pF
50V
NON_FRC
R467
10K
1%
C455
0.1uF
16V
0.1uF
16V
R442
22K 1%
NON_FRC
C402
100uF
16V
C407
0.1uF
16V
16V
26~42"
R448
12K
1%
PD_+12V
L421
3.6uH
NR8040T3R6N
A_DIM
+12V/+15V
C406
0.1uF
16V
0.1uF
16V
R457
10K
1%
R444
24K
1%
NON_FRC
PWM_DIM
R464
10K
C463
100pF
50V
R406
4.7K
4.7K
L420
CIC21J501NE
Q406
2SC3052
2SC3052
E
B
C
C442
10uF
16V
16V
OPT
R473
1
Q401
2SC3052
2SC3052
E
B
C
L404
MLB-201209-0120P-N2
ERROR_OUT
R418
6.8K
OPT
L412
26~42"
+12V/+15V
+3.3V_Normal
Q407
2SC3052
2SC3052
E
B
C
R458
12K
C477
0.1uF
16V
0.1uF
16V
R460
27K
1%
C453
22uF
22uF
10V
NON_FRC
C444
1uF
10V NON_FRC
R412
0
L416
C418
0.1uF
50V
+3.5V_ST
+12V/+15V
R465
51K
5%
L422
3.6uH
NR8040T3R6N
C436
0.01uF
25V
POWER_DET
OPC_OUT
R435
22K
R466
1.5K
1%
IC405
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C423
100pF
50V
OPT
C458
10uF
25V
10uF
25V
C466
2200pF
C427
100pF
50V
OPT
C430
22uF
22uF
10V
NON_FRC
C451
1uF
25V
25V
OPT
+5V_Normal
+1.26V_VDDC
C473
0.1uF
16V
0.1uF
16V
L407
MLB-201209-0120P-N2
C457
10uF
25V
10uF
25V
C416
0.1uF
0.1uF
16V
OPT
+3.3V_Normal
C448
0.1uF
50V
NON_FRC
R455
0
C461
22uF
22uF
10V
0.1uF
C456
NON_FRC
+3.5V_ST
0
R472
POWER_24_PWM_DIM
0
R471
POWER_22_PWM_DIM
POWER_ON/OFF2_2
R463
10K
OPT
C404
0.1uF
16V
+24V
R432
75K
75K
1/8W
1%
NON_FRC
+3.3V_Normal
C403
10uF
10V
10uF
10V
C426
68uF
35V
35V
Q405
2SC3052
E
B
C
C459
10uF
25V
10uF
25V
C438
0.1uF
16V
0.1uF
16V
INV_CTL
+12V/+15V
L413
NON_FRC
C465
1uF
10V
PANEL_CTL
1:AK10
R427
10K
OPT
L402
MLB-201209-0120P-N2
26~42"
0.1uF
C476
C412
0.1uF
16V
OPT
R436
10
1/10W
1%
NON_FRC
R449
11K
11K
1/10W
5%
+3.5V_ST
C464
2200pF
+3.5V_ST
+3.5V_ST
R454
9.1K
R426
10K
10K
OPT
C460
10uF
25V
10uF
25V
C440
0.1uF
16V
0.1uF
16V
IC407
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
R446
30K
1%
OPT
R462
10K
1%
R431
22K
R425
100
100
POWER_24_INV_CTL
L415
3.6uH
NR8040T3R6N
NON_FRC
Q402
RT1P141C-T112
1
2
3
C419
1uF
25V
OPT
R445
10K
NON_FRC
IC408
NCP803SN293
1
GND
3
VCC
2
RESET
R459
10K
R480
100
100
PD_+12V
C443
4.7uF
4.7uF
16V
C469
22uF
10V
22uF
10V
C471
22uF
10V
22uF
10V
P403
FW20020-24S
26~42"
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
R451
0
POWER_18_A_DIM
R453
0
POWER_20_A_DIM
0
R484
POWER_20_PWM_DIM
L424
CIC21J501NE
C485
0.1uF
16V
0.1uF
16V
R485
0
POWER_22_A_DIM
+3.3V_Normal
R486
4.7K
OPT
R488
100K
100K
R429
47K
47K
R475
0
POWER_24_GND
R476
0
POWER_23_GND
R419
1K
1K
R470
0
OPT
0.1uF
C486
NON_FRC
R447-*1
27K
1%
PD_+3.5V
R450
1K
1%
PD_+3.5V
R402
100
100
+24V
IC406
AOZ1072AI
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
IC402
AZ2940D-2.5TRE1
2
GND
3
VOUT
1
VIN
Q409
AO3407A
G
D
S
R404
100K
PD_+12V
IC409
NCP803SN293
PD_+12V
1
GND
3
VCC
2
RESET
R479
0
0
R439
33K
R440 5.6K
R482
24K
1%
POWER_+24V
R403
4.3K
1%
POWER_+24V
C474
0.1uF
0.1uF
R405
2.2K
2.2K
PANEL_DISCHARGE_RES
R407
2.2K
2.2K
PANEL_DISCHARGE_RES
100
R437
POWER_20_ERROR_OUT
100
R420
POWER_24_ERROR_OUT
C419-*1
3.9K
3.9K
PWM_PULL-DOWN
L431
BLM18PG121SN1D
22"
+24V
+12V/+15V
P405
WAFER-ANGLE
22"
1
2
3
4
5
6
7
8
9
10
11
C492
1uF
6.3V
1uF
6.3V
PWM_DIM
A_DIM
L425
BLM18PG121SN1D
22"
R489
4.7K
C487
1uF
6.3V
OPT
1uF
6.3V
OPT
L426
BLM18PG121SN1D
22"
+3.5V_ST
R490
10K
10K
OPT
R491
100
22"
EXT12V_CTRL
D400
A1
C
A2
D401
A1
C
A2
EXT5V_CTRL
R492
0
R493
0
0
OPT
+1.5V_DDR
RL_ON
+5V_ST
L432
22"
R482-*1
24K
1%
POWER_+20V
R403-*1
5.1K
5%
POWER_+20V
C488
10uF
25V
10uF
25V
22"
C489
10uF
25V
10uF
25V
22"
C490
22uF
10V
22uF
10V
22"
IC410
AOZ1073AIL
22"
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C491
100pF
50V
OPT
L433
3.6uH
NR8040T3R6N
22"
L434
22"
R494
4.7K
1%
22"
R495
10K
22"
C493
2200pF
22"
R496
10K
1%
22"
R497
9.1K
22"
R498
27K
1%
22"
+5V_ST
C428
0.1uF
16V
0.1uF
16V
IC401
AOZ1073AIL
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C414
2200pF
R411
10K
C420
22uF
10V
22uF
10V
L401
R417
10K
1%
+12V/+15V
L406
3.6uH
NR8040T3R6N
R410
9.1K
+5V_USB
POWER_ON/OFF2_1
C405
10uF
25V
10uF
25V
C429
100pF
50V
OPT
C410
10uF
25V
10uF
25V
C424
0.1uF
16V
0.1uF
16V
R487
1.5K
1%
R416
51K
1%
POWER
Ver. 1.0
Power_DET
+5V_Normal
INV_ON
R2
3A
PWM_DIM
or LIPS
+2.5V/+1.8V
22
Placed on SMD-TOP
PIN No
Vout=0.8*(1+R1/R2)
3A
Placed on SMD-TOP
R1
Vout=0.8*(1+R1/R2)
PANEL_POWER
AUO
VBR-A
C IN
Vd=550mV
1074 mA
S7M DDR 1.5V
26/32/52:PWM
Err_out
1934 mA
20
ST_3.5V--> 3.375V
Placed on SMD-TOP
Err_out
R2
Placed on SMD-TOP
R1
New item
Replaced Part
INV_ON
PWM_DIM
SHARP
INV_ON
300 mA
18
R1
PWM_DIM
R1
20V-->3.51V
24V-->3.64V
Close to IC
Vout=(1+R1/R2)*0.8
24
NC
FROM LIPS & POWER B/D
R2
A-DIM
2026 mA
Close to IC
C IN
12V-->3.58V
2A
Vout=0.8*(1+R1/R2)
Replaced Part
S7M core 1.26V volt
3A
+3.3V_Normal
MAX 1A
NC
CMO
INV_ON
R2
<OS MODULE PIN MAP>
4
23
IPS-@
+3.5V_ST -> 3.375V
INV_ON
Err_out
GND
GND
GND
GND
52/60:ERROR
26/32HD:NC
GND
PWM_DIM
NC
(PSU)
(PSU)
(PSU)
(PSU)
18.5V-->3.5V
60:NC
26/32/52:GND
60:PWM
LGD(PSU)
EAX62115501
R1
3A
+3.3V_ST
R2
Vout=(1+R1/R2)*0.8
3A
1000 mA
Vout=(1+R1/R2)*0.8
+5V_USB
R2
R1
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