LG 22LD350 Service Manual page 28

MLB-201209-0120P-N2 Adapter
NON_Adapter
P7500
SMAW200-12
+15V
1
+15V
2
GND
3
GND
4
+3.5V_ST
5
C7509
+3.5V_ST 0.1uF
6
GND
7
OLP
8
INV_ON
9
R7506
0
P_DIM
10
C7507
R7505 1uF
0 R7507
A_DIM 4.7K A_DIM 6.3V
11
OPT
OPT
C7506
NC 0 R7508
1uF
12
6.3V
OPT
OPT
Adapter
JK7500
JPD003N-M432-4F
24V
SW
C7502
0.1uF
50V
GND
+24V_LED_driver
Adapter
P7501
SM14B-SRSS-TB
24V
1
C7927
C7928
0.1uF
24V 0.01uF
2 50V
50V
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
GND
10
Adapter_AUO
R7588
NC
11
0
INV_ON
12
Adapter_LGD
R7589
PWM_DIM
13
Adapter_LGD
0
R7579
ERROR_OUT
14
100
15
Adapter_AUO
R7580
R7587
GND
3.3K
0
Adapter_AUO
+12V/+15V To Tuner
IC7511
MP8706EN-C247-LF-Z
IN GND
1 8
OPT
C7921
C7913
1uF
100pF
SW_1 VCC
2 7 50V
50V
C7910
10uF 3A R7851
SW_2 FB
25V 10K
3 6
C7920
0.1uF
POWER_ON/OFF2_2
BST EN/SYNC
4 5
R7850 R7852
22
10K 090916
L7911
3.6uH
NR8040T3R6N
Vout=(1+R1/R2)*0.8
+5V_USB
+12V/+15V
IC7500
MP8706EN-C247-LF-Z
IN GND
1 8
OPT
C7508
C7510
1uF
SW_1 VCC 100pF
2 7 50V
50V
C7500
10uF 3A R7509
SW_2 FB
25V 10K
3 6
C7504
0.1uF POWER_ON/OFF2_1
BST EN/SYNC
4 5
R7502 R7510
22 10K
090916
L7501
3.6uH
NR8040T3R6N
Vout=(1+R1/R2)*0.8
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.
+5V_Normal
+24V_LED 5V_PANEL
+24V/+15V
L7504
Adapter
L7503 L7912
MLB-201209-0120P-N2 MLB-201209-0120P-N2
4A -> 3A modify 090916
C7514 C7517
NON_Adapter
0.1uF 68uF
50V 35V
+3.5V_ST
L7502
MLB-201209-0120P-N2
NON_Adapter NON_Adapter
NON_Adapter C7511
C7515
0.1uF
68uF
16V
16V
35V
NON_Adapter
PANEL_CTL
OLP
PWM_DIM
+3.3V_Normal
3.3K -> 1K (threshold voltage up)
+3.5V_ST
OPC_OUT
R7514
1K
OPC_OUT R7516
10K
C
R7511 R7515 +3.5V_ST
INV_CTL
B 10K
6.8K
OPT
Q7502
E 2SC3052 R7517
10K
OPT
Placed on SMD-TOP
C IN
+24V/+15V
C7501
0.1uF
50V
ERROR_OUT
R7500
10K
Adapter
POWER_ON/OFF2_2
R7832
10K
NON_Adapter
RL_ON
+5V_General
MAX 300mA +15V Control
+3.5V_Normal
OPT
C7914
100pF C7915
C7918 C7919
R1
22uF 0.1uF 0.1uF
50V
10V
16V 16V
C7553
0.1uF
16V
R2
300 mA
+3.5V_ST
+5V_USB
MAX 2000mA
OPT
C7512
100pF C7513 C7516 C7518
R1 22uF
50V 0.1uF 0.1uF
16V
16V 16V
C7520
R2
C IN
10uF
16V
+12V/+15V
PANEL_POWER
12V_PANEL
C7525 C7526 C7529
10uF
0.01uF 0.1uF
16V
25V 16V
Q7506
OPT
AO3407A
New item
5V_PANEL
R7530 C7531
R7530-*1
33K 4.7uF G
22K
R7523
12V_PANEL
16V
22K
C7541
5V_PANEL
R7531
1uF
R7531-*1
5.6K 25V
2.7K 12V_PANEL
OPT OPT
C
R7522
10K
B Q7505
2SC3052
C
R7521
E
R7527
10K B Q7503
22K
2SC3052
E
S7 DDR 1.5V
Replaced Part
R1
R7575
L7506
10K
1%
IC7504
MP2212DN
Close to IC
10K
FB EN/SYNC R7578
1 8 POWER_ON/OFF1
R7574
R2
11K L7516
GND SW_2
5% 2 3A 7
3.6uH
IN SW_1
3 6
BS VCC
C7575
4 5
C7572
0.1uF
10uF
50V
16V
R7577 0
R7576
10 C7574
1% 1uF
10V
+3.5V_ST
AO3407A Vgs : 10.8V(24V input) AMP_VCC +12V/+15V
AO3407A Vgs : 8.3V(15V input)
C7503
R7503
2.2uF 22K
C7555
50V C7554
0.1uF
0.01uF
S
R7555
G Adapter 10K
R7501
L7913 3.3uH
Q7501
27K
R7572
D CPI2520NHL3R3ME 2520
AO3407A 0
R7556
L7914 NON_Adapter
C
BLM18PG121SN1D
B
C
R7545
Q7500
C7932 C7933
10K B Q7507
NON_Adapter
C7505 3.3uF 0.01uF
E 1608 2SC3052
0.01uF 50V 50V POWER_ON/OFF2_2
2A
50V R7551
E
22K
+3.5V_Normal
+24V_LED
+2.5V C7925
R7862
22K
2.2uF
IC7505 Adapter
50V
C7924
AZ2940D-2.5TRE1 +2.5V_Normal Adapter
0.1uF
50V
G
VIN VOUT Adapter
1 3
Vd=550mV R7861
Q7521
27K
2
Adapter Adapter
AO3407A
GND
R7860
C
10K
B
Adapter
RL_ON Q7520
C7556 C7557
Adapter
10uF 0.1uF
E
10V 16V
S7 core 1.26V volt
Replaced Part
R1
Vout=0.8*(1+R1/R2)
R7533 R7536
22K 1%
IC7501 24K 1%
L7507
MP2212DN Close to IC
10K
R7539 POWER_ON/OFF2_1
FB EN/SYNC
1 8
R7524
75K L7510
R2
1/8W 3.6uH
GND SW_2
1% 2 7
3A
NR8040T3R6N
IN SW_1
3 6
C7546
10uF
16V
BS VCC
4 5 C7534
0.1uF Placed on SMD-TOP
50V
R7532
Placed on SMD-TOP
R7528 0
C7530
10
1/10W 1uF
10V
1%
+24V/+15V
24V-->3.48V
15V-->3.56V
ST_3.5V-->3.5V --> 3.375V
PANEL_VCC
Power_DET
C7547
0.1uF
16V
1074 mA
Vout=0.8*(1+R1/R2)
+1.5V_DDR
Adapter
C7522
R7865
1uF
10
50V
Adapter
Adapter
Q7504
Si4800BDY
C7519
S1 D8
1uF 1 8
25V
S2 D7
2 7
$0.12
S3 D6
3 6
G D5
4 5
close to IC7502
C7576
C7577
22uF 0.1uF
10V
Placed on SMD-TOP
MBRA340T3G
close to pin
Adapter
+3.5V_Normal
D7500
Q7508
AO3407A
Adapter
C7524
C7559
220pF
4.7uF
50V
G
16V
C7561
1uF
25V
0
C7568
0.1uF
16V
+3.3V_Normal
+12V/+15V
+24V_LED_driver
AOZ1073AIL
S
L7511
PGND
1
VIN
D
2
C7923
0.1uF
AO3407A Vgs : 10.8V AGND
50V
3
Adapter
C7549
C7551
C7926
10uF 10uF FB
0.01uF
25V 4
50V 25V
LED Driver Power
+1.26V_VDDC
+12V/+15V
C7922
0.1uF
C7929 C7931
C7930 50V
C7548
0.1uF 330uF 22uF
0.1uF
C7550 C7552
4V 10V
10uF 10uF
OPT OPT
25V 25V
2026 mA
Vout=0.8*(1+R1/R2)
+3.5V_ST
R7561
100K
IC7509
NCP803SN293
1%
R7582
POWER_DET
100
VCC RESET
3 2
1
GND
R7585
+3.5V_ST
100K LIPS
IC7512
LIPS
NCP803SN293
1%
R7586
100
VCC RESET
3 2
LIPS
1
GND
UNDER CHECKING
+24V/+15V
24V->15V
IC7502
MP8670DN-LF-Z Adapter Adapter
Adapter
C7533 C7536 C7540
3.3uF
0.1uF 3.3uF
50V 50V 50V
SW IN
1 8
+12V/+15V
Adapter
090916
real output : 12.3V
BST EN/SYNC
2 7
RL_ON
Adapter
$0.37
R7540
R1
VCC FB 120K
3 6
1%
R2
BG GND
4 5
Adapter
L7508
Placed on SMD-TOP
4.7uH
Adapter Adapter
Adapter
SP-7850_4.7 C7532 C7537 C7545
10uF 10uF
0.1uF
25V 25V 50V
Adapter
R7529
100K 24V->3.5V
C7527 Adapter
50V 0.1uF
Switching noise reducing [MPS recommend]
IC7503
+24V/+15V
MP4460DQ-LF-Z EP_GND
SW_1 BST
1 10
SW_2 VIN_2
2 9
Adapter
Adapter C7542 C7544
EN VIN_1 3.3uF 0.1uF +3.5V_ST
3 8
Adapter
Adapter 50V
50V
R7537
COMP FREQ 200K
4 $0.21 7
1/8W Adapter
FB GND R7544
1%
5 6
105K
1/10W
1%
Adapter
L7509
3.6uH
Adapter Adapter Adapter
C7538
NR8040T3R6N C7571 C7543
10uF 10uF 0.1uF
10V 50V
10V
+3.3V_Normal
IC7506
1934 mA
L7513 L7515
CIC21J501NE
3.6uH
LX_2
8
NR8040T3R6N
LX_1
7
3A
EN POWER_ON/OFF2_2 C7569
C7563 C7567
6 R1
0.1uF
10uF 0.1uF
R7558
16V 16V 16V
10K
COMP
5
OPT
9.1K C7562
2200pF
R7557 100pF
C7558
50V
R2
Vout=(1+R1/R2)*0.8
+5V_Normal
MAX 1A
IC7507 +5V_Normal
AOZ1072AI
L7514
3.6uH
PGND LX_2
1 8
NR8040T3R6N
VIN LX_1
2 7
2A
POWER_ON/OFF2_2
AGND EN R1 C7565
C7566 C7578
3 6
100pF 10uF
0.1uF
R7560
50V
16V 16V
10K
FB COMP
4 5
12K
2200pF
R7559
C7560
R2
GP2_Saturn7
Ver. 1.00
92
POWER_SMALL
C7570
0.1uF
16V