LG 50UH5500 Service Manual page 45

+3.3V - eMMC
+3.3V_NORMAL +1.8V
3.3V_EMMC DVDD18_EMMC
L2304 L2305
PZ1608U121-2R0TF PZ1608U121-2R0TF
C2308 C2307
C2309 C2323 C2312
0.1uF 0.1uF
10uF 10uF 10uF
16V 16V
10V 10V 10V
+1.8V - K2L, eMMC
& Vx1 pull-up
+3.3V_NORMAL
IC2301
TJ2132GDP [EP]GND
1 8
GND
POK
R2307
10K 2 7
FB
POWER_ON/OFF2_2 EN
3 6
+5V_NORMAL
IN OUT
2A
C2310
4 5
10uF
10V
BIAS SS
C2311 EAN63492001
1uF
10V
C2359
2700pF
50V
Vout=0.6*(1+R1/R2)=1.8V
+3.3V_NORMAL
+3.3V_NORMAL
IC2302
MP1471AGJ-C667
L2300
4.7uH
GND
1
C2301 C2303
C2302 C2304 +13V
SW
R1 10uF 10uF 10uF 10uF
2
10V 10V 10V 10V
R2304 IN
1.2K 3
1% L2301
R2305 UBW2012-121F
7.5K
1% OPT
OPT
C2300 C2305
R2311 C2306
10uF
0.1uF
25V
20K
1500pF 50V
50V
R2
R2306
2.7K
Vout=0.8*(1+R1/R2)
1%
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 2016 LG Electronics Inc. All rights reserved.
Only for training and service purposes
+3.5V_ST
L2306
C2324
10uF
10V
+1.0V CORE
+3.3V_NORMAL
VID_CORE Low : 0.970V
VID_CORE High
C2327
10uF
10V
D1V0
+1.8V
R2308
R2
10K
1%
R1
C2333
0.01uF
25V
OPT
C2341
10uF
10V
C2313
1uF
25V
R2347
POWER_ON/OFF2_1
22
BST 5%
6
EN
R2342
5
10K
FB C2331
4 0.1uF
16V
OPT
VID_CPU
+1.5V DDR
POWER_ON/OFF2_3
OPT
C2335
0.1uF
16V
C2338
0.1uF
16V
NR5040T2R2N
L2309
2.2uH
PVIN_1 SW_3
1 12
THERMAL
PVIN_2 SW_2
2 11
17
C2366
C2348 C2350 C2354 C2361
0.1uF EAN62870501
PGND_1 SW_1
3 IC2303 10 10uF 10uF 10uF 10uF
16V
BD9A300MUV
C2339 10V 10V 10V 10V
PGND_2 SS
4 9
3A
0.01uF
50V
+3.5V_ST
R2323
C2342
8.2K
1% 1/16W
50V 2700pF
3A
Vout=0.8*(1+R1/R2)
POWER_ON/OFF2_2
: 1.0V
C2346
0.1uF
C2345
16V
0.1uF
OPT
16V
PGOOD_1 GSNS
1 23
THERMAL
LP# VSNS
2 29 22
MODE SLEW
3 21
IC2305
NC TRIP
4 20
C2344 R2321
TPS51362RVER
25V 4.7
BST GND
5 19
CMLB065T-1R0MS
0.1uF 5%
SW_1 V5
L2307 6 18
1uH
SW_2 VIN_1
7 17
SW_3 VIN_2
8 16
SW_4 VIN_3
9 15
OPT
C2343
470pF
50V
R2319
GSNS
0
Vout=2*R2/(R1+R2)=1.054V
+1.05V_CPU_GPU
VID_CPU High : 1.03V
VID_CPU Low : 1.00V
L2302
PZ1608U121-2R0TF
R1
IC2300
RT7231GQW [EP]PGND
R2300
6.8K
1%
EN VIN_2
1 10
POWER_ON/OFF2_2
OPT C2314
R2343
10K
0.1uF
16V FB VIN_1
2 9
C2315
VREG5 BOOT
R2301
3 8
22K C2317
1uF
1% R2 10V
0.1uF
C2316 SS SW_2
25V
4 7
R2302
0 50V 4700pF
5%
PGOOD SW_1
5 6
+3.3V_NORMAL
R2303
10K
D
FET_TOSHIBA
R2313
G Q2302
T2N7002AK
0 5%
D
S
Vout=0.765*(1+R1/R2)
G
S
Power_DET
+13V +3.5V_ST
PD_+12V PD_+3.5V
R2331 R2333
14K 0
+1.5V_DDR
1% 5%
NON_OLED
C2356
PD_+12V
0.1uF
R2332
16V
5.1K
1%
C2326 C2328
10uF 10uF
10V 10V
0
R2341
OPT
R1
R2
D
G
T2N7002AK S
Q2300
FET_TOSHIBA
D
R2318
G
R1 VID_CORE
5% 0
S
R2324
+3.5V_ST
10K
R2
R1
GSNS
D1V0 C2353
debugging point 5pF
R2339 50V
0
R2
C2347
+5V_NORMAL
0.01uF
25V
C2352
2.2uF
10V C2355
+13V
0.47uF
25V
L2308
C2349 C2351
10uF 10uF
25V 25V
K2L Power SEQUENCE
+13V
POWER_ON/OFF2_1(3.3V)
C2318 C2319
10uF 0.1uF
25V 16V
OPT POWER_ON/OFF2_2(1.05V / 1.0V / 1.8V)
POWER_ON/OFF2_3(1.5V)
CPU_1V0
L2303 1.0uH
Epoxy-SDES053T-1R0MS
C2320 C2321 C2322 C2329
10uF 10uF 10uF 10uF
10V 10V 10V 10V
+3.5V_ST
NON_OLED
R2335
100K
PD_RESET_IC_APX803-MAIN
R2336
IC2304
10K
APX803L OPT
VCC RESET POWER_DET
3 2
EAN61829903
1
PD_RESET_IC_7529M2-SUB
IC2304-*1
GND
PD_RESET_IC
KIC7529M2
C2358
0.1uF
VCC OUT 16V
3 2
EAN63491301
1 not to RESET
at 8kV ESD
GND
POWER_DET_1
+3.5V_ST
+13V
BLM18PG121SN1D
L2313
IC2306
TPS56428DDAR
[EP]GND
C2363
C2360
0.1uF
10uF
25V
EN VIN 25V
1 8
VFB VBST
2 7
VLS6045EXT-4R7M(125)
+3.5V_ST
C2357
L2312
0.1uF
4.7uH
VREG5 SW
50V
3 6
4A
PG GND
C2368 C2370 C2369
4 5 10V
10uF 10uF 10uF
10uF
C2367 10V 10V 10V
Vout=0.6*(1+R1/R2)
POWER_ON/OFF1(5V)
POWER_ON/OFF2_4
SOC_RESET
K2H 2015-01-10
07
PWR_1
LGE Internal Use Only