LG 26LV2500, Service Manual

Page: 32 / 37

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.
R7503
22K
C7560
2200pF
C439
100pF
50V
R7531-*1
2.7K
5V_PANEL
R7530
33K
12V_PANEL
L7502
MLB-201209-0120P-N2
NON_Adapter
C7956
0.1uF
16V
C470
0.1uF
16V
R7517
10K
OPT
+12V/+15V
IC7502
MP8670DN-LF-Z
Adapter
3
VCC
2
BST
4
BG
1
SW
5
GND
6
FB
7
EN/SYNC
8
IN
C7569
0.1uF
16V
R7586
100
1%
LIPS
R7501
27K
+5V_Normal
R7588
100
IC7509
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
POWER_DET
C7928
0.01uF
50V
R7544
105K
1/10W
1%
Adapter
Q7520
Adapter
E
B
C
C7924
0.1uF
50V
Adapter
C7514
0.1uF
50V
R457
47K
1%
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
+3.5V_Normal
C447
0.1uF
16V
C448
3300pF
50V
L7913
CPI2520NHL3R3ME
Adapter
2520
3.3uH
C7557
0.1uF
16V
R7562 27K
1%
C7544
0.1uF
50V
Adapter
V_SYNC
C441
0.1uF
16V
L7517
12V_PANEL
L7514
3.6uH
NR8040T3R6N
C7959
0.1uF
16V
LIPS
Q7500
E
B
C
C7529
10uF
16V
OPT
C7553
0.1uF
16V
R7870 10K
1%
R7862
22K
Adapter
R432
330K 1/10W 5%
+12V/+15V
A_DIM
+12V/+15V
R7563
4.7K
1%
IC7512
NCP803SN293
LIPS_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
+24V/+15V
D7500
MBRA340T3G
Adapter
+12V/+15V
+1.5V_FRC_DDR
R7863 2.2K
OPT
R7590 120K
OPT
R7527
22K
L7508
4.7uH
SP-7850_4.7
Adapter
L7509
3.6uH
NR8040T3R6N
Adapter
C7506
1uF
6.3V
OPT
R449
56K
1/16W
1%
IC7951
AOZ1073AIL-3
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+24V/+15V
C7525
0.01uF
25V
0.01uF
R7585
100K LIPS
C7926
0.01uF
50V
Adapter
+3.5V_ST
R444
22K
1
%
Q7505
2SC3052
E
B
C
Q7502
2SC3052
E
B
C
+24V_LED_driver
POWER_ON/OFF2_1
C456
22uF
10V
+24V_LED
R7866
12K
R7516
10K
R436
7.5K
1/16W 5%
C7927
0.1uF
50V
+3.5V_ST
R7538
6.8K
1%
Adapter
C453
22uF
10V
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
ERROR_OUT
INV_CTL
C7556
10uF
10V
C7933
0.01uF
50V
C7565
100pF
50V
C7578
0.1uF
16V
R7530-*1
22K
5V_PANEL
R7519
22
1/16W
5%
Adapter
C7505
0.01uF
50V
R7861
27K
Adapter
C7538
10uF
10V
Adapter
+5V_Normal
C476
22uF
10V
C444
0.1uF
16V
R7521
10K
OPC_OUT
IC7507
AOZ1072AI-3
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
C7533
0.1uF
50V
Adapter
C7863
2200pF
C7561
1uF
25V
R7954
1.5K
1%
C7955
22uF
16V
IC7861
AOZ1072AI-3
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
+5V
+3.3V_Normal
C7501
0.1uF
50V
C7515
68uF
35V
NON_Adapter
R7515
10K
R7537
200K
1/8W
1%
Adapter
+24V/+15V
C7542
3.3uF
50V Adapter
+1.5V_DDR
Q7506
AO3407A
G
D S
R7565 51K
1%
R445
10K
R7555
10K
POWER_ON/OFF2_1
L7952
3.6uH
NR8040T3R6N
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
L420
IC7505
AZ2940D-2.5TRE1
2
GND
3
VOUT
1
VIN
+5V_USB
RL_ON
R7567 10K
1%
C475
0.1uF
16V
C7527
0.1uF
50V
Adapter
+24V/+15V
R7556
0
R7566
1.5K
1%
POWER_ON/OFF2_2
+3.5V_ST
C7953
2200pF
C7517
68uF
35V
+3.5V_ST
L7861
POWER_ON/OFF2_2
C7503
2.2uF
50V
L7503
MLB-201209-0120P-N2
NON_Adapter
C467
4700pF
50V
R7523
22K
L7504
MLB-201209-0120P-N2
Adapter
R7561
100K
C7581
4.7uF
OPT
R7525 68K 1/16W 5%
Adapter
+3.5V_ST
C7554
0.01uF
C7502
0.1uF
50V
C472
22uF
10V
C7580
4.7uF
10V
OPT
Q7521
Adapter
AO3407A
G
D
S
R7584
27K
1/16W
1%
OPT
C7545
0.1uF
50V
Adapter
R7531
5.6K
12V_PANEL
R7569 10K
OPT
C7862
10uF
25V
+3.5V_ST
L7513
3.6uH
NR8040T3R6N
R7511
6.8K
OPT
POWER_ON/OFF2_2
C7866
0.1uF
16V
+1.5V_DDR
+1.26V_VDDC
+12V/+15V
+12V/+15V
C7540
3.3uF
50V
Adapter
R464
10K
Q7522
AO3438
FRC
G
D S
R7505
4.7K
C7570
0.1uF
16V
R7559
12K
TP5303
+12V/+15V
C7526
0.1uF
16V
C7511
0.1uF
16V
NON_Adapter
C468
0.1uF
16V
PWM_DIM
L413
C7867
0.1uF
16V
R7560
10K
R7582
100
1%
C7925
2.2uF
Adapter
50V
R7558
10K
R7500
10K
Adapter
R7529
100K
Adapter
+3.5V_Normal
L7511
OLP
C7957
0.1uF
16V
OPT
C7952
10uF
25V
R7572
0
NON_Adapter
R455
15K
1/16W 5%
C7567
0.1uF
16V
C7864
100pF
50V
OPT
C7562
100pF
50V
OPT
R7551
22K
R7564 10K
1%
C7536
3.3uF
50V
Adapter
L7515
CIC21J501NE
+3.5V_ST
R7867
10K
R7514
1K
+2.5V_Normal
C7861
10uF
25V
RL_ON
C7509
0.1uF
16V
OPT
R7571
22
Adapter
R441
75K
1/8W
1%
R7522
10K
OPT
+3.5V_ST
+24V_LED_driver
C7865
22uF
16V
R7545
10K
L7914
BLM18PG121SN1D
NON_Adapter
1608
POWER_ON/OFF2_2
IC7506
AOZ1073AIL-3
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
L7912
MLB-201209-0120P-N2
Adapter
R7865
0
Adapter
Q7501
AO3407A
G
D
S
C463
100pF
50V
JK7500
JPD003N-M432-4F
Adapter
GND
SW
24V
POWER_ON/OFF2_1
L7505
5V_PANEL
POWER_ON/OFF2_2
L7862
3.6uH
NR8040T3R6N
+24V_LED
R7581
1.6K 1/8W
1%
Adapter
RL_ON
L415
3.6uH
NR8040T3R6N
L423
3.6uH
NR8040T3R6N
PANEL_CTL
C7571
10uF
10V
Adapter
TP5306
C7519
1uF
25V
Adapter
R7591 10K
FRC
C7958
0.1uF
16V
R7552
1
+3.3V_Normal
C7543
0.1uF
50V
Adapter
Q7507
2SC3052
E
B
C
R7952
10K
PANEL_VCC
+24V/+15V
POWER_ON/OFF1
C430
10uF
10V
C7559
4.7uF
16V
C462
0.1uF
16V
C7951
10uF
25V
Q7503
2SC3052
E
B
C
R7864 2.2K
OPT
L7951
R7955 10K
1%
C7507
1uF
6.3V
OPT
Q7508
AO3407A
G
D S
R7542
22K
OPT
C7568
0.1uF
16V
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
C7954
100pF
50V
OPT
R7570
18K
Adapter
C431
0.1uF
16V
R452
330K 1/16W 5%
R7953 51K
1%
R442
24K
1%
C7932
3.3uF
50V
R7832
10K
NON_Adapter
C7555
0.1uF
R7540
120K
1%
Adapter
C461
10uF
10V
C7547
0.1uF
16V
R7860
10K
Adapter
R7543
30K
1/10W
1%
Adapter
+24V
R7580
0
C7522
1uF
50V
Adapter
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]
R7547 8.2K 1%
Adapter
R7548 1.5K 1%
Adapter
R7547-*1
3.9K
1%
LIPS
R7548-*1
1.21K
1%
LIPS
R7583
0
1/10W
5%
LIPS
C7524
220pF
50V
Adapter
C465
0.01uF
50V
C488
0.01uF
50V
L7502-*1
CIS21J121
L7503-*1
CIS21J121
L7504-*1
CIS21J121
L7912-*1
CIS21J121
C7531
10uF
25V
C7537
10uF
25V
Adapter
C7532
10uF
25V
Adapter
C7551
10uF
25V
C7549
10uF
25V
C7552
10uF
25V C7550
10uF
25V
C7541
0.1uF
50V
OPT
C7504
0.015uF
50V
0.015uF
R7951
12K
R7557
12K
C7558
2200pF
C7563
22uF
16V
C7566
22uF
16V
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]
+5V_General
IC7952
AP1117EG-13
1
ADJ/GND
2 OUT 3 IN
C7960
0.1uF
16V
+5V
C7962
0.1uF
16V
C7961
22uF
16V
R466
51K
1%
R465 24K
1%
110
R7956
1/10W
R7957
330 1/10W
R7958
1
C7923
0.1uF
16V
C7922
0.1uF
16V
C7920
0.1uF
16V
C7921
0.1uF
16V
1074 mA
2A
close to IC7502
Power_DET
$0.148
+15V Control
AO3407A Vgs : 8.3V(15V input)
+5V to the LDO(IC7952)
R2
R2
R2
Placed on SMD-TOP
$0.37
PANEL_POWER
R1
2000 mA
$ 0.145
Vout=(1+R1/R2)*0.8
24V->15V
090916
2A
300 mA
3A
+3.5V_Normal
AO3407A Vgs : 10.8V(24V input)
4A -> 3A modify 090916
R1
24V-->3.48V
2A
AO3407A Vgs : 10.8V
24V->3.5V
ST_3.5V-->3.5V --> 3.375V
close to pin
+5V_Normal
3A
Switching noise reducing [MPS recommend]
$0.21
New item
Vout=(1+R1/R2)*0.8
Vd=550mV
$ 0.165
Max 1A
1934 mA
R2
R2
S7M DDR 1.5V
3A
$0.17
R1
Vout=0.827*(1+R1/R2)=1.521V
R1
AMP_VCC
R1
Vout=0.8*(1+R1/R2)
3A
Vout=(1+R1/R2)*0.8
+2.5V
+5V_USB
real output : 12.3V
UNDER CHECKING
Vout=0.8*(1+R1/R2)
R2
S7M core 1.26V volt
3.3K -> 1K (threshold voltage up)
R2
+1.5V_DDR_FRC
R1
+3.3V_Normal
MAX 1A
15V-->3.56V
R1
LED Driver Power
POWER_SMALL
20101117
22
GP2R
LDO for Tuner
6.8V