Electrical Diagrams - LG 49UF6700 Service Manual

L14 POWER BLOCK (POWER DETECT 2)
+24V
+12V +3.5V_POWER_DET
R435
100K
OPT OPT
R457 R430 R432
8.2K 2.7K 0
1% 5%
1% RESET_IC_DIODES(MULTI)
IC401
APX803E29
R454
100 5%
VCC RESET
3 2
1
C415
R431
0.1uF GND
1.2K
POWER_DET_RESET
16V
1%
OPT
+3.5V_POWER_DET R436
+24V
100K
OPT
OPT OPT
R458 IC402
R427
27K 0 APX803E29
R437
1% 5%
100 5%
VCC RESET
3 2
OPT OPT 1
C413 R428
GND
0.1uF 5.1K
16V 1%
Ready - Dual Power Det
Detect Valtage
Power Detect +3.5V
* Notice
Power Detect +12V
- Applying all inch models for LCD L14
- Dual Power Det is used
Power Detect +24V
for detecting two kinds of voltage
Vout=1.25*(1+R2/R1)+Iadj*R2
+1.5V_DDR
+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%
+12V
+5V_Normal
L404
BLM18PG121SN1D +3.3V_NORMAL
C403 C404
10uF 0.1uF
16V
R415
BD9D321EFJ
10K
EN
1
R408 R409 FB
2
R1
120K 6.8K
1% 1%
VREG
3
C405
100pF
50V
SS
3A
4
R410
C409 C410
22K
1uF 2200pF
1%
10V 50V
R2
+3.3V_NORMAL +5V_NORMAL
VIN
R405
1
4.7K
C406
GND
0.1uF 2
16V
EN
USB1_OCD 3
USB1_CTL
R403
10K
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 ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+3.5V_ST Power_DET
+12V
OPT
R438
RESET_IC_KEC(MULTI)
4.7K
IC401-*1
L408
KIC7529M2
POWER_DET VCC OUT MLB-201209-0120P-N2
3 2
1
C422
0.1uF GND
OPT
PANEL_CTL
Power Detect activity
Use Circuit Designator
Now is
R432, R454-*1, R438
O R430, R431, R454
R457, R454
+3.3V_Normal
+1.5V_DDR
L411
CB2012PK501T
R453 ZD403
R1
0 2.5V
C431
10uF
10V
R2
+5V_NORMAL
IC405
[EP]
VIN
8
16V
0.1uF
C411
BOOT
7
L405
3.6uH
SW
6
LPH6050T-3R6N-R
GND
C412 C443
5
22uF
22uF
10V
10V
+5V_USB
IC406
BD2242G
VOUT
6
ILIM
5
OC
4
1458mA
OPT
PANEL_POWER
Upper 79" TYP 6000mA
L412
C425
PANEL_FET_AOS(MULTI)
0.1uF
Q405
25V AO4447A
S_1 D_4
1 8
S_2 D_3
R445 C427 C438 2 7
10uF 10uF
10K
S_3 D_2
3 6 R451
16V 16V
2K
G D_1
4 5
OPT
R446
1.8K PANEL_FET_ROHM(MULTI)
Q405-*1
RRH140P03TB
C
R442 S_1 1 8 D_4
10K B Q403
S_2 2 7 D_3
2N3904S
NPN_KEC(MULTI)
S_3 3 6 D_2
E
R417
G 4 5 D_1
10K
C
B Q403-*1
MMBT3904(NXP)
NPN_NXP(MULTI)
E
3.3V_FET_AOS(MULTI)
Q406-*1
AO3435
+3.5V_ST +3.3V_NORMAL
3.3V_FET_TOSHIBA(MULTI)
Q406
L410
SSM3J332R
BLM18PG121SN1D
C428 C429 C430
R443 R447
ZD402
2.2uF 0.1uF 22uF
10K 22K
10V 16V 10V
TVS_SEMTECH(MULTI)
R448
2.2K
C C
R444
POWER_ON/OFF_1
10K
B Q404 B Q404-*1
2N3904S MMBT3904(NXP)
NPN_KEC(MULTI) NPN_NXP(MULTI)
E E
FROM LIPS or POWER B/D
C
Q400-*1
MMBT3904(NXP)
B
NPN_NXP(MULTI)
E
+3.5V_ST
R404
4.7K
OPT
R400
10K C
Q400
R402
10K 2N3904S
B
NPN_KEC(MULTI)
RL_ON
R401
E
10K
ZD404-*1
+3.5V_POWER_DET
TVS_KEC(MULTI)
L400
CB2012PK501T
+3.5V_ST
ZD400-*1
C407
10uF
10V
2012
TVS_KEC(MULTI)
+12V
C433
4.7uF
3216
+24V
4.7uF
PANEL_VCC
R452 C439 C440
2K 10uF 10uF
OPT 16V 16V
+1.10V_VDDC
+3.5V_ST
CB2012PK501T
OPT
C437 C436
0.1uF 10uF
16V 10V
+1.10V_VDDC
5V
OPT
C421 C420
ZD401 C424
22uF 22uF
2.5V 0.1uF
10V 10V
16V
ZD402-*1
TVS_KEC(MULTI)
Q401-*1
PNP_NXP(MULTI)
MMBT3906(NXP)
POWER_28P
1 3
PWR ON
1
2
PDIM1
3
3.5V
+3.5V_ST 5
R414 R416
3.5V
Q401 0 0 7
PNP_KEC(MULTI)
GND
PWM_from_MAIN PWM_from_TCON 9
2N3906S-RTK
12V
11
12V
13
3
1
12V
15
R406 GND
2 OPT 17
10K
R412 24V
19
33K
24V
21
POWER_28P GND
23
URSA_OPT_5
R407 33 SCLK
25
SIN
27
R411 33
URSA_OPT_6
POWER_28P
R424
C408 C432
R455 3.9K 18pF 18pF
OPT OPT
0 P402
OPT
R456
0
ZD404
5V
TVS_SEMTECH(MULTI)
POWER_24P
PWR ON
1
PDIM1
L401 3
C400
CB2012PK501T
1uF ZD400 3.5V
5
10V
5V
1005 3.5V
TVS_SEMTECH(MULTI) 7
OPT
GND
L403 9
MLB-201209-0120P-N2 12V
11
C402 12V
13
0.1uF
12V
15
16V 16V
GND
L402 17
MLB-201209-0120P-N2
24V
19
24V
21
C401
C442
GND
0.1uF 23
50V
50V
3216
P401
IC403
+3.3V_NORMAL
TPS5432DDAR
L406 [EP]GND
C418
0.01uF
BOOT SS
C414 C435 R429
1 8
10uF 0.1uF 10K
10V 16V
VIN EN
2 7
C417
L407
0.1uF
3.6uH
PH COMP
16V
3 6 C416
3A
0.33uF
R433 16V
GND VSENSE
2.7K
4 5
1%
C419 C434
C423
R439
0.039uF 390pF
50V 20K
R1 50V 50V
270pF 1%
R440 R2
47K
1%
Vout=0.808*(1+R1/R2)
DRV ON
2
PDIM2
4
GND
6
3.5V
8
GND
10
12V
12
12V
14
GND
16
24V
18
24V
20
GND
22
NC C
24
GND
26 B
33 R413
V_SYNC
28
URSA_L/D_VSYNC
POWER_28P E
C441 +3.3V_NORMAL Q402-*1
29
18pF MMBT3904(NXP)
OPT NPN_NXP(MULTI)
+3.5V_ST
R420
1K
R419
100
R426
10K
C
R425
10K
B
INV_CTL
E Q402
DRV ON
2 2N3904S NPN_KEC(MULTI)
R423
PDIM2
4
PWM1
GND
6
100
3.5V
8
GND OPT
10
R467
12V
12
1K
12V
14
GND
16
24V
18
24V
20
GND
22
NC
24
R470
0
25
M1A_URSA9_UD 2014.04.24
Power_PD2 04
LGE Internal Use Only