LG 22LT360C Service Manual page 24

L7504-*1
CIS21J121
C7507
1uF
10V
C7507-*1
OPT 3.9K
PWM_PULL_DOWN
JK400
JPD003N-M432-4F
24V
SW
C7502
0 . 1 u F
50V
GND
+24V_LED_driver
12V_PANEL
P400
SM14B-SRSS-TB
24V
1
C7927
C7928
0 . 1 u F
24V 0 . 0 1 u F
2 50V
50V
12V_PANEL
12V_PANEL
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
GND
10
12V_PANEL
R7588
ERROR_OUT
11 ERROR_OUT
100
INV_ON
12
NC
13
RL_ON
PWM_DIM
14
15
R7580
GND
0
+3.3V_Normal
+3.5V_ST
0 . 1 u F
16V
R438
R434 22K
10K
R445
100
C
R443
POWER_ON/OFF_1
10K
B Q400
MMBT3904(NXP)
E
+12V/+15V
+5V_USB
C405
10uF
25V
IC401
TPS54327DDAR
[EP]GND
EN VIN
R1
1 8
R410
10K
R416 R607 C413
56K 11K VFB VBST
2 7
1% 1% 0 . 1 u F
C489
100pF VREG5 SW
3 6
3A
R423
SS GND
12K
4 5
1% C494 C493
R2
1uF 3300pF
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.
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
L7504 +5V_Normal
+24V/+15V +24V_LED
Adapter_MAG
MLB-201209-0120P-N2
Adapter_MAG
L7912
MLB-201209-0120P-N2
C7517
C7514
68uF L7912-*1
0 . 1 u F
50V 35V CIS21J121
PANEL_CTL
PWM_DIM
+3.3V_Normal
3 . 3 K - > 1 K ( t h r e s h o l d v o l t a g e u p )
+3.5V_ST
R7514
1K
R7516
10K
C
R7515
INV_CTL
B 10K
Q7502
E MMBT3904(NXP)
WLED_ENABLE
+3.5V_ST
Q7508
MMBT3906(NXP)
E C
RL_ON_BUFFER
B
R7507
4.7K
R7506 C
10K
B Q7507
MMBT3904(NXP)
E
R7509
10K
+3.3V_Normal
+3.3V_Normal
Q403
L403
AO3407A
BLM18PG121SN1D
C432
0 . 1 u F
R446 16V
C445 C437
G
10K
OPT 0 . 1 u F
22uF
C423
OPT 16V 16V
4 . 7 u F 16V
OPT
16V
C424
1uF
25V
780 mA
OPT
+3.5V_ST
L413
C430
2000 mA
10uF
10V
+5V_USB +5V_Normal
L425
L406
BLM18PG121SN1D
3.6uH
NR8040T3R6N
C420 C492
22uF 22uF
+5V_SUB_AMP
16V 16V
OPT
L426
BLM18PG121SN1D
EXT_SPK
+12V/+15V
PANEL_POWER
12V_PANEL
5V_PANEL
C7525 C7526 C7529
C7504
10uF
0 . 0 1 u F 0 . 1 u F
0 . 0 1 5 u F 50V 16V
0 . 0 1 5 u F 16V
Q7506
50V
OPT
0 . 0 1 u F AO3407A
R7530 C7531
R7530-*1
33K 10uF G
22K
R7523
12V_PANEL
5V_PANEL 25V
22K
OPT
C7541
R7531
0 . 1 u F
R7531-*1
5.6K 50V
2.7K
12V_PANEL
5V_PANEL OPT
C
R7522
10K
B Q7505
MMBT3904(NXP)
C
R7521
R7527 E
47K
B Q7503
22K
MMBT3904(NXP)
OPT
OPT
R7524 OPT
E
10K
+1.5V_DDR
+3.5V_ST
IC407
AP7173-SPG-13 HF(DIODES)
L420
[ E P ]
BLM18PG121SN1D
IN OUT
1 8
R457
PG FB 4.3K
2 7
1/16W
R1
1%
VCC SS
3 6
1 . 5 A '
+3.3V_Normal
R433
EN GND
10K C467
4 5
560pF
50V R2
C461
10uF
10V
V o u t = 0 . 8 * ( 1 + R 1 / R 2 ) = 1 . 5 3 1 9
AMP_VCC Control
+24V/+15V AMP_VCC
A O 3 4 0 7 A V g s : 1 0 . 8 V ( 2 4 V i n p u t )
+24V
A O 3 4 0 7 A V g s : 8 . 3 V ( 1 5 V i n p u t )
C7501
C7503
R7503
0 . 1 u F 22K
2 . 2 u F
50V
50V
S
G
R7500
R7501
10K L7913 3.3uH
Q7501
POWER_ON/OFF_1 27K
D CPI2520NHL3R3ME 2520
AO3407A
R7502
C
10K
2A
OPT
B
MMBT3904(NXP)
Q7500
C7932 C7933
C7505 3 . 3 u F 0 . 0 1 u F
E
0 . 0 1 u F 50V 50V
50V
L E D D r i v e r P o w e r
+2.5V/+1.8V
+24V_LED
C7925
IC402 +2.5V_Normal
TJ3940S-2.5V-3L 2 . 2 u F
50V
C7924
0 . 1 u F
VIN VOUT
Vd=550mV
50V
GND
R7861
Q7521
27K
AO3407A
R7860
10K C
C403
C440 B
MMBT3904(NXP)
10uF 0 . 1 u F
RL_ON_BUFFER
10V
16V
300 mA
E
S 7 L R c o r e 1 . 2 V v o l t
+3.3V_Normal
10K
C447
R428
0 . 1 u F
16V
C441
0 . 1 u F
16V
L415
3.6uH
VIN_1 PH_3
1 12
THERMAL
NR8040T3R6N
VIN_2 PH_2
2 17 11
C431
C453 C456
0 . 1 u F GND_1 PH_1
3 IC403 10
22uF 22uF
16V
TPS54319TRE C488 10V 10V
GND_2 SS/TR
4 9
3300pF
50V R1
R432
1/16W 330K 5%
R436 C448
3300pF
15K
50V
R2
4A $ 0 . 1 6 5
Vout=0.827*(1+R1/R2)=1.225V
R7863-*1 R7864-*1
3K 3K
PANEL_DISCHARGE_RES
PANEL_DISCHARGE_RES
New item
24V-->3.48V
15V-->3.56V
C7958
S T _ 3 . 5 V - - > 3 . 5 V - - > 3 . 3 7 5 V
0 . 1 u F
16V
PANEL_VCC
Power_DET
C7547
0 . 1 u F
16V
Max 1000mA
+1.5V_DDR
C7522
R7865
1uF
0
50V
SI4124DY-T1-GE3(VISHAY)
C7519
1uF S_1
C472 1
C476
25V
22uF 0 . 1 u F S_2 2
10V 16V S_3
3
G 4
c l o s e t o I C 7 5 0 2
MBRA340T3G
c l o s e t o p i n
+24V_LED_driver
R7862
22K
S
G
D
AO3407A Vgs : 10.8V
Q7520
C7926
0 . 0 1 u F
50V
+1.10V_VDDC
C444
0 . 1 u F
16V
OPT
R400
FB_CORE
0
50V
100pF
C439
+3.5V_ST
+24V/+15V
R7561
100K
POWER_DET_DIODES
IC7509
APX803D29
1%
R7582
VCC RESET 100
3 2
1
GND
POWER_DET_ON_SEMI
IC7509-*1
NCP803SN293
VCC RESET
3 2
1
GND
+24V/+15V
24V->15V
IC7502
MP8670DN-LF-Z
C7533 C7536 C7540
3 . 3 u F 3 . 3 u F
0 . 1 u F
50V 50V 50V
SW IN
1 8
+12V/+15V
090916
r e a l o u t p u t : 1 2 . 3 V
BST EN/SYNC
2 7
RL_ON_BUFFER
$0.37
R7540
R1
VCC FB 120K
3 6
1%
R2
BG GND
4 5
Q7504
D_4
8
7 D_3
D_2
6
5 D_1
L7508
Placed on SMD-TOP
4.7uH
S P - 7 8 5 0 _ 4 . 7
C7532 C7537 C7545
10uF 10uF
0 . 1 u F
25V 25V
50V
R7529
100K 24V->3.5V
C7527
0 . 1 u F
50V S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
IC7503
+24V/+15V
MP4460DQ-LF-Z EP_GND
SW_1 BST
1 10
SW_2 VIN_2
2 9
D7500
C7542
C7544
EN VIN_1
3 . 3 u F 0 . 1 u F +3.5V_ST
3 8
50V 50V
R7537
COMP FREQ 100K
$0.21
4 7
C7524 1/8W
220pF FB GND R7544
5%
50V 5 6
100K
1/10W
1%
L7509
3.6uH
C7538 C7571 C7543
NR8040T3R6N
10uF 0 . 1 u F
10uF
10V
10V 50V
20110324
S7LR_26LED
POWER_Adaptor 4
LGE Internal Use Only
POWER_DET
C7957
0 . 1 u F
16V
OPT