LG 32LY560M Service Manual page 24

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
R400
10K C
Q400
R402
10K MMBT3904(NXP)
B
RL_ON
R401
E
10K
OPT
NEW_18PIN
R411 0
ZD404
5V
NEW_18PIN
+3.5V_POWER_DET
P401
SMAW200-H18S5
L400
CB2012PK501T
+3.5V_ST
PWR ON
1 2
C407 C400 L401
CB2012PK501T
10uF 1uF ZD400 3.5V
3 4
10V 10V
5V
2012 1005 3.5V
5 6
OPT
GND
L402 7 8
MLB-201209-0120P-N2
24V
+24V 9 10
GND
+24V_CAP
11 12
C401
C432
12V
0.1uF 13 14
4.7uF
50V 12V
50V 15 16
3216 GND
L403 17 18
MLB-201209-0120P-N2
+12V
+12V_CAP
C433 C402 19
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
R449
C426
R1
1K
10uF
1/16W
10V
1%
1.3A
R450
200 R2
1/16W
1%
+5V_Normal & +5V_USB with OCP
+3.3V_Normal
MHL_SW_TR MHL_SW_TR
R463 R464
2.7K 10K
MHL_SW_TR
Q408
E C
MHL_5V_EN MHL_5V_EN
MHL_SW_TR
C USB1_CTL
R461
10K B R466
B
/VBUS_EN 20K
(Active Low)
MHL_SW_TR E MHL_SW_TR
Q407 R465
10K
MHL_SW_TR
C
R462
10K
B
MHL_OCP_EN
MHL_SW_TR
(Active High)
Q409
E
MHL_SW_AND_GATE
IC406
74LVC1G08GW +3.5V_ST
B VCC
1 5
MHL_CD_SENSE
A
2
MHL_OCP_EN
GND Y
3 4
MHL_5V_EN
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
+24V
+12V
OLD_18PIN
P401-*1
OPT
SMAW200-H18S1 R457 R430
8.2K 2.7K
1%
1%
PWR ON DRV ON
1 2
3.5V PDIM#1
3 4
3.5V 3.5V
5 6
GND PDIM#2 C415
7 8 R431
0.1uF 1.2K
24V 24V
9 10
16V
1%
GND GND
11 12
12V 12V
13 14
12V N.C
15 16 +24V
GND GND
17 18
OPT
19 R427
27K
1%
+3.3V_Normal
OPT OPT
C413 R428
+3.5V_ST
5.1K
R420 0.1uF
1K 16V 1%
R419
Ready - Dual Power Det
100
R426
10K
C
R425
10K
B
INV_CTL
E Q402
DRV ON
MMBT3904(NXP)
PDIM#1
PWM_DIM
3.5V R417 0
* Notice
PDMI#2 OLD_18PIN
PWM1
- Applying all inch models for LCD L14
24V NEW_18PIN
PWM2_2CH_POWER
R414 0
GND R423 - Dual Power Det is used
100
for detecting two kinds of voltage
12V
NC
PWM_DIM_PULL_DOWN
OPT
GND R424 R467
+1.10V_VDDC
3.9K 1K
OLD_18PIN
R413
0
+3.5V_ST
C437
0.1uF
16V
+1.10V_VDDC
+1.5V_DDR
L411
OPT
ZD401 C424
CB2012PK501T
2.5V 0.1uF
16V
R453 ZD403
0 2.5V
C431
10uF
10V
+12V
C405 C406
10uF 10uF
16V
R410
OPT
100K
C403
100pF
50V
C409 L405
0.047uF
4.7uH
25V
EN BST
C404
1 18
R408 4700pF
THERMAL
4.7K 50V
+3.3V_Normal COMP LX_2
25
2 17
OPT SS LX_1
3 16
R459 IC400
0
OPT OPT ROSC FB
R403 R405 4 15
TPS65282REGR
4.7K 4.7K
EN_SW2 SW_IN_2
5 14
4A
EN_SW1 SW_IN_1
6 13
+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)
Power_DET
+3.5V_POWER_DET +3.5V_ST
R435
PD_+3.5V
100K
R454-*1
OPT OPT
300
R432 RHOM_RESET R438
0 IC401
4.7K
5%
5%
BD48K28G
PD_+12V
R454
VDD VOUT 100 5%
3 2
POWER_DET
1
GND C422
POWER_DET_RESET 0.1uF
OPT
+3.5V_POWER_DET R436
100K
OPT
OPT IC402
OPT
R458
BD48K28G IC402-*1
OPT
0 APX803D29
R437
5%
100 5%
VDD VOUT VCC RESET
3 2 3 2
1 1
GND GND
Power Detect activity
Use Circuit Designator
Detect Valtage Now is
Power Detect +3.5V R432, R454-*1, R438
Power Detect +12V O R430, R431, R454
Power Detect +24V R457, R454
IC403
TPS5432DDAR
L406 [EP]GND
CB2012PK501T
C418
OPT
0.01uF
BOOT SS
C436 C414 C435
1 8
10uF 10uF 0.1uF
10V 10V 16V
VIN EN
2 7
C417
L407
0.1uF
3.6uH
PH COMP
16V
3 6
3A
R433
C421 C420 GND VSENSE
2.7K
4 5
22uF 22uF
1%
10V 10V
C419 C434
C423 R439
0.039uF 390pF
50V
20K
R1 50V
270pF 1%
R440 R2
47K
1%
Vout=0.808*(1+R1/R2)
+5V_Normal
R421 C411 C412
18K 82pF 22uF
1%
50V 16V
R1
R2
R422
3.3K
1%
PANEL_VCC
+12V
L408
UBW2012-121F
120OHM
OPT
R445
C425
0.1uF 33K
25V
R446
12K
DIODE_RESET
IC401-*1
APX803D29 R442
10K
B
PANEL_CTL
VCC RESET
3 2
1 R441
10K
GND
+3.3V_NORMAL
+12V
L404
+3.5V_ST
BLM18PG121SN1D
C428
10uF
16V
+3.3V_Normal
R444
POWER_ON/OFF1
10K
R429
10K
1%
R434
R1
51K
C416
C429
0.33uF 100pF
50V
16V
R447
OPT
15K C430 C438
1uF 3300pF
50V
10V 50V
1%
R2
Switching freq: 700K
PANEL_VCC
PANEL_VCC_DIODES PANEL_VCC_NXP
Q405-*1
Q405
DMP2130L
PMV48XP
C427 R451 R452
10uF 5.6K 5.6K
G
16V
C
Q403
MMBT3904(NXP)
E
+3.3V_Normal
IC405
TPS54327DDAR [EP]GND
EN VIN
1 8
16V
0.1uF
C439
VFB VBST
2 7
L410
3.6uH
VREG5 SW
3 6
SM-8040
SS GND
3A C440
4 5 C441
22uF
22uF
10V
10V
Vout=0.765*(1+R1/R2)
XXLY570H-UA 2013/10/22
Power Block 4
LGE Internal Use Only