LG 19LV2500 Service Manual page 34
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Also See for 19LV2500:
- Owner's manual (184 pages) ,
- Service manual (99 pages) ,
- Manual del usuario (106 pages)
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+24V/+15V
JK7500
JPD003N-M432-4F
24V
L7504
MLB-201209-0120P-N2
SW
C7502
C7514
C7517
0.1uF
0.1uF
68uF
50V
50V
35V
GND
+3.3V_Normal
3.3K -> 1K (threshold voltage up)
R7514
+3.5V_ST
+3.5V_ST
1K
WLED_ENABLE
R7516
R7504
10K
10K
R7511
C
OPT
R7515
6.8K
10K
B
INV_CTL
RL_ON
OPT
Q7502
R7517
2SC3052
E
10K
OPT
+5V to LDO(IC7952)
+12V/+15V
IC7861
AOZ1072AI-3
L7862
3.6uH
PGND
LX_2
1
8
NR8040T3R6N
VIN
LX_1
2
7
C7868
0.1uF
50V
AGND
EN
3
6
R7867
C7861
C7862
10K
10uF
10uF
FB
COMP
4
5
25V
25V
R7866
C7863
2A
12K
2200pF
Vout=(1+R1/R2)*0.8
IC7952
LDO for Tuner, Hongsu, 1115
+5V
AP1117EG-13
IN
3
1A
2 OUT
R7956
R7957
C7962
110
330
1
0.1uF
16V
ADJ/GND
+5V_Normal
+12V/+15V
IC7507
AOZ1072AI-3
PGND
LX_2
1
8
NR8040T3R6N
VIN
LX_1
2
7
C7922
0.1uF
AGND
EN
50V
3
6
C7550
C7552
R7560
10K
10uF
10uF
FB
COMP
25V
25V
4
5
R7559
12K
C7560
2A
2200pF
Vout=0.8*(1+R1/R2)
+12V/+15V
+5V_USB
L401
C405
10uF
25V
IC401
TPS54327DDAR
[EP]GND
R1
EN
VIN
1
8
R410
R416
R607
10K
VFB
VBST
56K
11K
2
7
1%
1%
VREG5
SW
3
6
C489 100pF
R423
SS
GND
12K
4
5
1%
C494
C493
1uF
3300pF
R2
3A
10V
50V
Vout=(1+R1/R2)*0.765=5.03V
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.
+3.3V_Normal
+5V_Normal
+24V_LED
R180
10K
R181
OPT
1K
OLP
OPT
L7912
4A -> 3A modify 090916
Not used :
MLB-201209-0120P-N2
only for small(ready)
+3.5V_ST
OPT
RT1P141C-T112
Q7508
RL_ON_BUFFER
PANEL_CTL
1
3
2
R7507
4.7K
OPT
R7506
C
10K
B
Q7507
2SC3052
OPT
OPT
E
R7505
10K
R7508
0
* option : +5V_TUNER
+3.5V_ST
+5V
Max 1A
L420
BLM18PG121SN1D
6.8V
OPT
C7864
C7867
C7865
C7866
R1
100pF
0.1uF
22uF
0.1uF
+3.3V_Normal
50V
16V
16V
16V
C461
10uF
10V
R2
+5V_TUNER
R7958
1
1/10W
C7960
C7961
22uF
0.1uF
16V
16V
+3.5V_ST
+5V_Normal
MAX 1A
L413
L7954
L7514
3.6uH
BLM18PG121SN1D
C430
10uF
10V
R1
C7565
C7566
C7578
C7570
100pF
22uF
0.1uF
0.1uF
50V
16V
16V
16V
R2
2000 mA
+5V_USB
C413
0.1uF
L406
50V
3.6uH
NR8040T3R6N
C420
C492
22uF
22uF
16V
16V
OPT
POWER_ON/OFF_1
PANEL_POWER
PANEL_VCC_0.01uF
C7529
C7504
C7525
C7526
10uF
0.015uF
0.01uF
0.1uF
16V
50V
25V
16V
Q7506
OPT
AO3407A
PANEL_VCC_0.015uF
New item
C7531
R7530
4.7uF
22K
16V
G
R7523
22K
C7541
OPT
0.1uF
R7531
50V
2.7K
OPT
C
R7522
10K
B
Q7505
2SC3052
C
R7521
E
R7527
10K
B
Q7503
22K
2SC3052
OPT
OPT
OPT
E
R7524
10K
+1.5V_DDR
IC407
AP7173-SPG-13 HF(DIODES)
[EP]
IN
OUT
1
8
PG
FB
2
7
R457
4.3K
VCC
SS
3
6
1%
R1
R433
10K
EN
GND
R456
4
5
4.7K
C467
1%
1.5A
560pF
C475
0.1uF
50V
R2
16V
Vout=0.8*(1+R1/R2) = 1.5319
S7LR core 1.2V volt
+3.3V_Normal
10K
C447
R428
0.1uF
16V
C441
0.1uF
16V
L415
3.6uH
VIN_1
PH_3
1
12
THERMAL
NR8040T3R6N
VIN_2
PH_2
2
17
11
C431
C453
C456
0.1uF
GND_1
PH_1
3
IC403
10
22uF
22uF
16V
TPS54319TRE
C488
10V
10V
GND_2
SS/TR
4
9
3A
3300pF
50V
R432
1/16W
330K
5%
C448
R436
R1
3300pF
15K
50V
R2
Vout=0.827*(1+R1/R2)=1.225V
AMP_VCC Control
+24V/+15V
AO3407A Vgs : 10.8V(24V input)
AO3407A Vgs : 8.3V(15V input)
AMP_VCC
C7503
R7503
+24V
C7501
22K
2.2uF
0.1uF
50V
50V
S
G
R7501
Q7501
27K
D
AO3407A
L7913
3.3uH
CPI2520NHL3R3ME 2520
R7500
C
10K
C7932
C7933
B
Q7500
C7505
3.3uF
0.01uF
MMBT3904(NXP)
50V
50V
0.01uF
50V
E
R7502
10K
OPT
+24V/+15V
24V-->3.48V
ST_3.5V-->3.5V --> 3.375V
(LIPS : 3.9K)
C7958
(LIPS : 1.2K)
0.1uF
16V
PANEL_VCC
+3.5V_ST
C7547
0.1uF
16V
C7959
0.1uF
16V
OPT
(LIPS)
Max 1000mA
SW
BST
+1.5V_DDR
VCC
C7522
R7865
1uF
0
BG
50V
Q7504
SI4124DY-T1-GE3(VISHAY)
C7519
1uF
S_1
1
8
D_4
25V
C472
S_2
D_3
C476
2
7
22uF
0.1uF
S_3
3
6
D_2
16V
10V
G
D_1
4
5
close to IC7502
MBRA340T3G
close to pin
D7500
C7524
220pF
50V
R7570
18K
+1.10V_VDDC
C444
0.1uF
16V
+3.3V_Normal
FB_CORE
+3.5V_ST
R400 0
OPT
50V
100pF
C439
C435
0.1uF
16V
R434
10K
R443
10K
POWER_ON/OFF_1
+24V_LED
+24V_LED_driver
C7925
R7862
2.2uF
22K
50V
C7924
0.1uF
S
50V
G
R7861
27K
Q7521
D
AO3407A
R7860
C
AO3407A Vgs : 10.8V
10K
B
Q7520
MMBT3904(NXP)
RL_ON_BUFFER
C7926
E
0.01uF
50V
Power for LED driver
S7LR SMALL TN
+3.5V_ST
R7561
100K
IC7509
NCP803SN293
1%
R7582
100
VCC
RESET
3
2
POWER_DET
1
GND
(PWR_DET_ONSEMI)
C7957
0.1uF
16V
OPT
R7585
(LIPS)
100K
OPT
IC7512
(LIPS)
OPT
NCP803SN293
1%
R7586
100
VCC
OPT
RESET
3
2
(LIPS)
1
GND
(LIPS_PWR_DET_ONSEMI)
Power_DET
UNDER CHECKING
+24V/+15V
24V->15V
IC7502
MP8670DN-LF-Z
C7536
C7540
C7533
3.3uF
0.1uF
3.3uF
50V
50V
50V
IN
+12V/+15V
1
8
EN/SYNC
2
7
RL_ON_BUFFER
R1
R7540
FB
120K
3
6
1%
R2
real output : 12.3V
GND
4
5
L7508
Placed on SMD-TOP
4.7uH
SP-7850_4.7
C7532
C7537
C7545
10uF
10uF
0.1uF
25V
25V
50V
R7529
100K
24V->3.5V
C7527
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
C7542
C7544
EN
VIN_1
3.3uF
0.1uF
+3.5V_ST
3
8
50V
50V
R7537
100K
COMP
FREQ
4
7
1/8W
R7544
FB
GND
5%
5
6
100K
2.5A
1/10W
R7543
1%
30K
1/10W
1%
L7509
3.6uH
C7538
NR8040T3R6N
C7571
C7543
10uF
10uF
0.1uF
10V
50V
10V
780 mA
+3.3V_Normal
Q403
L403
RSR025P03
BLM18PG121SN1D
S
D
C425
C445
C437
G
R446
C423
0.1uF
0.1uF
22uF
4.7uF
16V
10K
R438
16V
16V
16V
OPT
22K
OPT
OPT
R445
2.2K
C
B
Q400
2SC3052
E
+2.5V
+3.3V_Normal
IC402
+2.5V_Normal
TJ3940S-2.5V-3L
1A
VIN
VOUT
3
2
Vd=550mV
1
R473
C432
GND
0.1uF
1
16V
C403
C440
10uF
0.1uF
10V
16V
300 mA
2011.06.17
POWER
32
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