Power Block (Power Detect 2) Diagram - LG 55LB5610 Service Manual

L14 POWER BLOCK (POWER DETECT 2)
FROM LIPS or POWER B/D
+3.5V_ST
Q401
MMBT3906(NXP)
3
1 OPT
R412
R406
2 33K
10K
+3.5V_ST
R404
4.7K
OPT
R400
10K C
Q400
R402
10K MMBT3904(NXP)
B
RL_ON
R401 R455
E
10K 0
OPT
R456
0
ZD404
5V
+3.5V_POWER_DET
P401
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
OPT 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
Vout=1.25*(1+R2/R1)+Iadj*R2
+1.5V_DDR
+3.3V_Normal
IC404
L409
AZ1117EH-ADJTRG1
BLM18PG121SN1D
IN OUT
ADJ/GND
R449
C426
1K
10uF
10V 1/16W
1%
1.3A
R450
200
1/16W
1%
+5V_Normal & +5V_USB with OCP
R408
4.7K
+3.3V_Normal
+3.3V_Normal
OPT OPT
R403 R405
4.7K 4.7K
MHL_5V_EN
MHL_SW_TR MHL_SW_TR
R463 R464
USB1_CTL
2.7K 10K
MHL_SW_TR
Q408
C
E
MHL_5V_EN
MHL_SW_TR
C
R461
10K B R466
B
20K
/VBUS_EN
(Active Low)
MHL_SW_TR MHL_SW_TR
E
Q407 R465
10K
MHL_SW_TR C
R462
10K
B
MHL_OCP_EN
MHL_SW_TR
(Active High)
Q409 E
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 © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+24V
OPT
R457
8.2K
1%
C415
0.1uF
16V
+3.3V_Normal
+3.5V_ST
OPT
R420
C413
1K
0.1uF
R419
16V
100
R426
10K Ready - Dual Power Det
C
R425
10K
B
INV_CTL
E Q402
DRV ON
2 MMBT3904(NXP)
PDIM#1
4 PWM_DIM
3.5V
6
PDMI#2
* Notice
8
PWM1
24V - Applying all inch models for LCD L14
10 PWM_DIM_PULL_DOWN PWM2_2CH_POWER
OPT
GND R424 R423
12 R467 - Dual Power Det is used
100
3.9K
12V 1K for detecting two kinds of voltage
14
NC
16
GND
18
+1.10V_VDDC
19
+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
4.7uH
25V
EN BST
C404
1 18
4700pF
THERMAL
50V
COMP LX_2
25 R421 C411 C412
2 17
18K 82pF 22uF
OPT SS LX_1 1%
50V 16V
3 16
R459 IC400 R1
0
ROSC FB
4 15
TPS65282REGR
R2
EN_SW2 SW_IN_2
5 14
4A R422
EN_SW1 SW_IN_1 3.3K
6 13
1%
+3.3V_Normal C410
10uF
+5V_USB
10V
R407 R409
10K 10K
AVDD5V_MHL
R415 5V_HDMI_4
15K
5%
D401
R418
MBR230LSFT1G
30V 10
C408
OPT
R416 10uF
100K 10V
Vout=0.8*(1+R1/R2)
+12V +3.5V_POWER_DET +3.5V_ST
R435
PD_+3.5V
100K
OPT R454-*1
OPT
R430 R432 300
R438
2.7K 0
4.7K
1% 5% 5%
IC401
APX803D29 PD_+12V
R454
100 5%
VCC RESET
3 2
1
R431
C422
GND
1.2K
POWER_DET_RESET 0.1uF
1%
OPT
+3.5V_POWER_DET R436
+24V
100K
OPT
OPT OPT
R458 IC402
R427
27K 0 APX803D29 OPT
R437
1% 5%
100 5%
VCC RESET
3 2
OPT 1
R428
GND
5.1K
1%
Detect Valtage Now is
Power Detect +3.5V
Power Detect +12V O
Power Detect +24V
+3.5V_ST
IC403
TPS5432DDAR
L406
CB2012PK501T
OPT
BOOT
C437 C436 C414 C435
1 8
0.1uF 10uF 10uF 0.1uF
16V 10V 10V 16V
+1.10V_VDDC VIN
2 7
C417
L407
0.1uF
3.6uH
PH
16V
3 6
3A
OPT
C421 C420 GND
ZD401 C424
4 5
22uF 22uF
2.5V 0.1uF
10V 10V
16V
C423 R439
50V
20K
R1
270pF
1%
R440 R2
47K
1%
Vout=0.808*(1+R1/R2)
Power_DET
PANEL_VCC
UBW2012-121F
POWER_DET
PANEL_CTL
Power Detect activity
Use Circuit Designator
+3.3V_Normal
R432, R454-*1, R438
R430, R431, R454
+3.5V_ST
R457, R454
R443
10K
+3.3V_Normal
[EP]GND
C418
0.01uF
SS
R429
10K
EN
POWER_ON/OFF_1
COMP
C416
0.33uF
R433 16V
VSENSE
2.7K
1%
C419 C434
0.039uF 390pF
50V 50V
+12V PANEL_VCC
L408
Q405
120OHM DMP2130L
OPT
C427 R451 R452
C425 R445
5.6K
10uF 5.6K
0.1uF 33K G
16V
25V
R446
12K
C
R442
10K
B Q403
MMBT3904(NXP)
R441 E
10K
FET_2.5V_DIODE
Q406-*1
DMP2130L
+3.3V_Normal
FET_2.5V_AOS
Q406
L410
AO3435 BLM18PG121SN1D
C428 C429 C430
R447
ZD402
2.2uF 0.1uF 22uF
22K
5V
10V 16V 10V
R448
2.2K
C
R444
10K
B Q404
MMBT3904(NXP)
E
L14_M1A 2013.10.28
Power_PD2 4
LGE Internal Use Only