Read LG 42LP360H (CHASSIS:LA3AA) Service Manual online
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.
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.
C436
100pF
50V
+3.5V_ST
C431
10uF
10uF
25V
R426
10K
10K
+3.5V_ST
+24V
C432
22uF
22uF
10V
C425
10uF
10V
10uF
10V
R454
10K
IC404
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
C438
0.1uF
16V
0.1uF
16V
IC405
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
POWER_DET
POWER_ON/OFF_1
R433
330K
1/16W
5%
PANEL_VCC
R429
10K
10K
IC406
NCP803SN293
PD_+24V_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
C426
0.1uF
16V
R462
100
100
PD_+24V
R438
27K
1/16W
1%
10uF
C418
10V
+1.10V_VDDC
L408
C443
0.1uF
16V
NON_CI_CAP
+3.5V_ST
+1.5V_DDR
+12V
C446
0.1uF
16V
+3.3V_Normal
C440
0.1uF
16V
R460
100K
PD_+24V
R435
33K
L410
BLM18PG121SN1D
C434
22uF
22uF
10V
PANEL_CTL
001:AL22
C416
10uF
10V
10uF
10V
560pF
C433
50V
C417
0.1uF
16V
0.1uF
16V
NON_CI_CAP
+3.5V_ST
+3.5V_ST
C419
0.1uF
16V
0.1uF
16V
NON_CI_CAP
R430
10K
10K
Q406
AO3407A
G
D
S
R437
4.7K
1/16W
1%
1/16W
1%
R432
15K
15K
C442
0.1uF
16V
0.1uF
16V
C444
4.7uF
16V
4.7uF
16V
FET_AOS
IC402
TJ3940S-2.5V-3L
LDO_OLD
1
GND
2
VOUT
3
VIN
C430
0.1uF
16V
0.1uF
16V
R452
10K
OPT
IC403
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]
R457
100K
100K
C421
0.1uF
16V
NON_CI_CAP
+3.3V_Normal
C445
0.1uF
0.1uF
R436
5.6K
+12V
+3.3V_Normal
R425
10K
R439
56K
1/16W
1%
R465
10K
RESET_IC_SOC_RESET
+2.5V_Normal
C441
0.1uF
16V
0.1uF
16V
PD_+24V
+3.3V_Normal
R458
22K
22K
R456
10K
10K
R440
4.3K
4.3K
1/16W
1%
1%
C439
22uF
10V
L411
3.6uH
NR8040T3R6N
IC405-*1
APX803D29
PWR_DET_ON_DIODES
1
GND
3
VCC
2
RESET
IC406-*1
APX803D29
PD_+24V_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
C423
0.01uF
50V
0.01uF
C429
3300pF
50V
C427
3300pF
R444
1.5K
1.5K
1%
PD_+24V
R450
2.7K
2.7K
1%
PD_+12V
R455
0
5%
PD_+3.5V
R434
1
R443
8.2K
8.2K
1%
PD_+24V
C420
0.015uF
50V
0.015uF
50V
0.015uF
Q407
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
Q405
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
C422
0.33uF
16V
R451
1.2K
1.2K
1%
PD_+12V
Q408
AO3407A
FET_AOS
G
D
S
C424
0.1uF
25V
0.1uF
25V
C437
0.1uF
25V
0.1uF
25V
NON_CI_CAP
C435
0.1uF
25V
OPT
C428
10uF
25V
25V
OPT
R459
100
FET_AOS
R451-*1
5.1K
5.1K
1%
PD_KR_42_LIPS
L409
CIS21J121
120
L412
BLM18SG700TN1D
R455-*1
100
100
1%
PD_KR_42_LIPS
R441-*1
4.7K
PANEL_DISCHARGE_RES_4.7K
R442-*1
4.7K
PANEL_DISCHARGE_RES_4.7K
Q408-*2
AO3435
FET_2.5V_AOS
G
D
S
Q408-*1
DMP2130L
FET_2.5V_DIODE
G
D
S
R459-*1
2.2K
FET_2.5V
C444-*1
2.2uF
10V
2.2uF
10V
FET_2.5V
R441
5.6K
5.6K
PANEL_DISCHARGE_RES_5.6K
R442
5.6K
5.6K
PANEL_DISCHARGE_RES_5.6K
C448
22uF
10V
22uF
10V
R441-*2
5.1K
5.1K_PANEL_DISCHARGE
R442-*2
5.1K
5.1K_PANEL_DISCHARGE
R413
10K
PWM_DIM
PWM1
L405
MLB-201209-0120P-N2
+24V
R418
10K
10K
R420
100
T120
+3.5V_ST
P401
SMAW200-H18S1
14
12V
9
24V
4
PDIM#1
18
GND
13
12V
8
GND
3
3.5V
17
GND
12
GND
7
GND
2
DRV ON
16
N.C
11
GND
6
PDIM#2
1
PWR ON
15
12V
10
24V
5
3.5V
19
.
+3.5V_ST
R406
10K
10K
OPT
R417
10K
10K
R415
100
100
Q401
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
L413
MLB-201209-0120P-N2
L402
CIC21J501NE
Q403
MMBT3904(NXP)
E
B
C
R410
4.7K
4.7K
R416
1K
L403
CIC21J501NE
+3.5V_ST
+12V
C403
0.1uF
16V
R409
10K
C407
0.1uF
16V
+3.3V_Normal
INV_CTL
C405
0.1uF
50V
RL_ON
+3.5V_ST
R414
33K
OPT
R419
3.9K
OPT
Q402
MMBT3906(NXP)
1
2
3
R407
10K
C401
68uF
35V
35V
OPT
C411
22uF
16V
22uF
16V
C409
3300pF
50V
3300pF
50V
R404
33K
1%
+5V_Normal
R403
10K
10K
C402
22uF
16V
22uF
16V
OPT
+3.3V_Normal
+5V_Normal
R411
2K
R401
27K
1%
C408
100pF
50V
OPT
R405
100K
USB1_OCD
C413
0.1uF
16V
0.1uF
16V
OPT
C406
4.7uF 10V
L404
3.6uH
+5V_USB_1
R402
11K 1%
L401
CIC21J501NE
+12V
C404
10uF
16V
10uF
16V
R412
20K
20K
C410
0.047uF
25V
0.047uF
25V
R421
4.7K
OPT
4.7K
OPT
C414-*1
10uF 10V
CAP_10uF_X7R
C412
330pF
50V
USB1_CTL
C414
10uF
10uF
10V
CAP_10uF_X5R
85C
IC401
TPS65281RGV
TPS65281RGV
3
ROSC
2
COMP
4
RLIM
1
SS
5
EN_SW
6
FAULT
7
AGND
8
SW_OUT
9
SW_IN
10
FB
11
LX
12
BST
13
PGND
14
VIN
15
V7V
16
EN
17
[EP]
R408
0
C415
22uF
22uF
10V
D404
5V
D401
5V OPT
D402
5V
OPT
D403
5V
OPT
D405
5V
OPT
POWER_DET_RESET
R461
300
300
RESET_IC_SOC_RESET
IC402-*1
TJ1118S-2.5
LDO_NEW
1
GND
2
OUT
3
IN
R461-*1
100
100
1/16W
5%
5%
3.5V_SOC_RESET
R2
+1.5V_DDR
New item
Power_DET
+24V --> 3.78V --> 3.92V (3.79V)
+12V --> 3.58V --> 3.82V (3.68V)
Vd=550mV
+2.5V/+1.8V
R1
+3.3V_Normal
Vout=0.8*(1+R1/R2)=1.5319
Vout=0.827*(1+R1/R2)=1.225V
R1
R2
$ 0.165
S7LR core 1.2V volt
+3.5V_ST --> 3.375V --> 3.46V
780 mA
Max 1000mA
+18.5V --> 3.5V --> 3.75V (3.59V)
300 mA
1.5A
PANEL_POWER
3A
+20V --> 3.51V --> 3.76V (3.59V)
POWER
4
FROM LIPS & POWER B/D
LA2AW
2012.09.11
Vout=0.8*(1+R1/R2)
CHANGE TO
10UF/10V/X5R
10UF/10V/X5R
R1
+5V_Normal
&
+5V_USB_1
&
+5V_USB_1
CHANGE TO
16V/X5R
16V/X5R
R2
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