LG 39LY340H Service Manual page 26

L14 POWER BLOCK (POWER DETECT 2)
FROM LIPS or POWER B/D
+3.5V_ST
MMBT3906(NXP)
Q401
+3.5V_ST
3
1 OPT
R412
R406 33K
2
10K
OPT
R400
R404
10K 4.7K
C
Q400
R402
RL_ON 10K MMBT3904(NXP)
B
R401 R455
10K E
0
OPT
R456
0
ZD404
+3.5V_POWER_DET 5V
SMAW200-H18S5
L400
CB2012PK501T
+3.5V_ST
PWR ON
1
C407 C400 L401
CB2012PK501T
10uF 1uF ZD400 3.5V
3
10V 10V
5V
2012 1005 3.5V
5
GND
L402 7
MLB-201209-0120P-N2
24V
+24V 9
GND
+24V_CAP
11
C401
C432
12V
0.1uF 13
4.7uF
50V 12V
50V 15
3216 GND
L403 17
MLB-201209-0120P-N2
+12V
+12V_CAP
C433 C402
4.7uF 0.1uF
16V 16V
3216
+1.5V_DDR Vout=1.25*(1+R2/R1)+Iadj*R2
+3.3V_Normal
IC404
L409
AZ1117EH-ADJTRG1
BLM18PG121SN1D
IN OUT
ADJ/GND
C426 R449
1K
10uF
1/16W
10V
1%
1.3A
R450
200
1/16W
1%
+5V_Normal & +5V_USB with OCP
R408
+3.3V_Normal
OPT OPT
R403 R405
4.7K 4.7K
R468
MHL_5V_EN
+3.3V_Normal USB1_CTL
MHL_SW_TR
MHL_SW_TR
R463 R464 Q408
MHL_SW_TR
2.7K 10K
E C
MHL_5V_EN
MHL_SW_TR
C
R461
10K B R466
B
/VBUS_EN 20K
(Active Low)
MHL_SW_TR E R465
Q407 10K
MHL_SW_TR
C
R462
10K
B
MHL_OCP_EN
MHL_SW_TR
(Active High)
MHL_SW_TR E
Q409
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Power_DET
+3.3V_Normal
+3.5V_ST
R420
R419
100 1K
C
R426
P401
R425
10K
10K INV_CTL
B
E Q402
DRV ON
2 MMBT3904(NXP)
PDIM#1 PD_+24V
4 PWM_DIM
C413
3.5V
6
0.1uF
PDMI#2
8 16V
PWM1
24V
10 PWM_DIM_PULL_DOWN PWM2_2CH_POWER
R467
GND R424 R423
12
100 1K
3.9K
12V OPT
14
NC
16
GND
18
19
+1.10V_VDDC
+1.5V_DDR
L411
CB2012PK501T
R453 ZD403
R1
0 2.5V
C431
10uF
10V
R2
+12V
C405 C406
10uF 10uF
16V
R410
OPT
100K
C403
100pF +5V_Normal
50V
C409 L405
0.047uF
R417 4.7uH
25V
EN BST 0
C404
1 18
4700pF
THERMAL
4.7K 50V R1
COMP LX_2
25
2 17 C411 C412
R421
OPT SS LX_1 18K 82pF 22uF
3 16
R459 50V 16V
1%
0
ROSC FB
IC400
4 15
R2
TPS65282REGR
EN_SW2 SW_IN_2
0
5 14
4A R422
EN_SW1 SW_IN_1 3.3K
6 13 1%
C410
+3.3V_Normal 10uF
+5V_USB 10V
R407 R409
10K 10K
CI_Del
CI AVDD5V_MHL
R415 5V_HDMI_4
R415-*1
15K
12K
5%
5% D400
R418
MBR230LSFT1G
10
30V
C408
OPT
R416 10uF
100K 10V
Vout=0.8*(1+R1/R2)
+3.5V_ST --> 3.375V --> 3.46V
+24V --> 3.78V --> 3.92V (3.79V)
+12V --> 3.58V --> 3.82V (3.68V)
+24V
+12V +3.5V_POWER_DET R454-*1
100 +3.5V_ST
R435
PD_+12V
100K
PD_+12V OPT R438
OPT
OPT 4.7K
R432
R430 IC401
R457 0
2.7K
8.2K
1% BD48K28G
5% PD_+3.5V
1%
R454
VDD VOUT 300
3 2
PD_+12V 1
R431
C415 GND
1.2K PWR_DET_ROHM
0.1uF
1%
16V
POWER_DET_RESET
PD_+24V
+3.5V_POWER_DET
+24V R436
100K
0
PD_+24V R458 IC402
R427 5%
OPT BD48K28G
27K
PD_+24V
1% R437
100
VDD VOUT
3 2
PD_+24V
1
R428
5.1K
GND
1% PD_+24V+PWR_DET_ROHM
+3.5V_ST IC403
L406
TPS5432DDAR
CB2012PK501T
OPT
BOOT
C414 C435
C437 C436 1 8
10uF 0.1uF
0.1uF 10uF
R460
10V 16V
16V 10V
0
+1.10V_VDDC VIN
2 7
C417
L407
0.1uF
3.6uH
PH
16V
3 6
3A
OPT
C424 C421 C420 GND
ZD401
4 5
0.1uF 22uF 22uF
2.5V
16V 10V 10V
C423 R439
50V 20K
R1
270pF
1%
R440 R2
47K
1%
Vout=0.808*(1+R1/R2)
L14 MHL SW AND GATE
+3.3V_Normal
MHL_SW_AND_GATE
IC405
74LVC1G08GW
B VCC
1 5
MHL_CD_SENSE
A
2
MHL_OCP_EN
GND Y
3 4
PANEL_POWER
+12V
IC401-*2
NCP803SN293
L408
UBW2012-121F
VCC RESET
3 2
120OHM
1
GND
C425
PWR_DET_ONSEMI
0.1uF
IC402-*2
25V
NCP803SN293 OPT
POWER_DET
VCC RESET
3 2
C422 1
0.1uF
GND
PD_+24V+PWR_DET_ONSEMI
PANEL_CTL
IC401-*1
051:AG8
APX803D29
R441
10K
VCC RESET
3 2
1
GND
PWR_DET_ON_DIODES
IC402-*1
APX803D29 +3.3V_Normal
VCC RESET
3 2
+3.5V_ST
1
GND
PD_+24V_PWR_DET_DIODES
+3.3V_Normal
[EP]GND
C418
0.01uF
SS
R429
10K
POWER_ON/OFF_1
EN
COMP
C416
0.33uF
R433
16V
VSENSE
2.7K
1%
C419 C434
0.039uF 390pF
50V 50V
MHL_5V_EN
PANEL_VCC
NXP
Q405
PMV48XP
C427
R445
10uF
33K 16V
G R451 R452
5.6K
5.6K
R446
12K
C
FET_2.5V_DIODE
R442
10K DMP2130L
B Q403
Q405-*1
MMBT3904(NXP)
E
NXP +3.3V_Normal
PMV48XP
L410
Q406
BLM18PG121SN1D
C430 ZD402
C429
C428
0.1uF
R443 22uF 5V
R447
2.2uF 16V
10K 10V
22K
10V
R448
2.2K
FET_2.5V_DIODE FET_2.5V_AOS
AO3435
DMP2130L
C
Q406-*2
R444 Q406-*1
10K
B Q404
MMBT3904(NXP)
E
NC5_M1A 2013.05.15
Power_PD2 1
LGE Internal Use Only