LG 42LB65 Series Service Manual page 30

+3.5V_ST
R2301
10K
R2300
RL_ON
10K
Q2300 POWER_WAFER_18PIN
MMBT3906(NXP) P2300
+3.5V_ST
SMAW200-H18S5
VA23001
5.6V
AMOTECH CO., LTD.
L2304
PWR ON INV ON
1 1 2 2
UBW2012-121F
3.5V PDIM#1
3 3 4 4
3.5V 3.5V
5 5 6 6
C2307
+12V
GND PDIM#2
0.1uF 7 7 8 8
16V 24V 24V
9 9 10 10
GND GND
11 11 12 12
UBW2012-121F
12V 12V
13 13 14 14
12V 24V
15 15 16 16
L2303
GND GND
C2306 17 17 18 18
0.1uF GND GND
19 20
50V
GND L/DIMO_VS
21 22
19
L/DIM0_MOSI L/DIM0_SCLK
23 24
25
SMAW200-H24S5
P2301
POWER_WAFER_24PIN
L/DIM0_MOSI
+3.3V - eMMC 4.41(LG1311-A0)
+3.3V_NORMAL
L2302
BLM18PG121SN1D
C2305 C2300
0.1uF 22uF
16V 10V
+1.8V - eMMC 4.51(LG1311-B0)
DVDD18_EMMC
+3.3V_NORMAL
IC2306
AZ1117EH-ADJTRG1
IN OUT
R2347
ADJ/GND
1
C2301
10uF
10V
+12V
+3.3V_NORMAL
L2300
BLM18PG121SN1D
C2302
C2303
10uF
0.1uF
16V
16V IC2300
BD9D320EFJ
R2304
POWER_ON/OFF1
10K EN
1
R2302 R2303 R1
68K FB
5.1K
2
1/16W 1/16W
1% 1%
VREG
3
3.3V_DCDC_ROHM
C2304
100pF
50V
SS
R2 3A
3.3V_DCDC_TI 4
IC2300-*1
TPS54327DDAR [EP]GND
3.3V_DCDC_RHOM
C2310 C2312
EN VIN
1 8
1uF 2200pF
VFB VBST
3.3V_DCDC_TI 10V 50V
2 7
3.3V_DCDC_RHOM
VREG5 SW C2312-*1
3 6
3300pF
SS GND
4 5 50V Vout=0.765*(1+R1/R2)
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 rights reserved.
Only for training and service purposes
+3.3V_NORMAL
Q2302 Change: Diodes --> NXP, 131118
+12V
R2310
1K
R2309
100
INV_CTL
PWM_DIM
PWM_DIM2
R2354
R2355
+24V 4.7K
4.7K
OPT
L2306 OPT
UBW2012-121F
PANEL_CTL
L/DIM0_VS
L/DIM0_SCLK
OPT
R2356
C2316
1K
0.1uF
50V
+3.3V_NORMAL
3.3V_EMMC
+5V_NORMAL
POWER_ON/OFF2_1
C2308
10uF
10V
POWER_ON/OFF2_3
C2317
C2318
22uF
22uF
10V
10V
+3.3V_NORMAL
SoC A0/A1 : 1.22V(R1/R2=10.7K,10.5K)
SoC B0 : 1.12V(R1/R2=9.1K10.7K)(1309016)
[EP]FIN
VIN
8 POWER UP SEQUENCE
16V
0.1uF
C2313
BOOT
3.3V->2.5V->1.5V/1.1V->5V
7
L2301
2uH
SW
6
GND
C2314
5 C2315
22uF
22uF
10V
10V
PANEL_POWER
PANEL_VCC
Q2302
PMV48XP
L2313
UBW2012-121F
C2331 R2317 C2333
10uF G
0.1uF
30K C2347
50V 16V
0.1uF
50V
R2318
5.1K
C
Q2301
B
MMBT3904(NXP)
R2314
10K E
+2.5V
+2.5V_NORMAL
IC2302
AP7173-SPG-13 HF(DIODES)
[EP]
IN OUT
1 8
R1
PG FB
2 7
C2346
1.5A
VCC SS 10uF
3 6
10V
C2337
R2
2200pF
R2312 EN GND
4 5 50V
10K
C2327
10uF
10V
Vout=0.8*(1+R1/R2)
+1.1V_CORE
R2311
10K
R2316
39K
R1
1/16W
5%
C2321
1000pF
R2
50V
RF FB CORE_V_B0
1 23
THERMAL
PGOOD GND
2 29 22
R2307 1K EN MODE
3 21
16V
0.1uF IC2301
VBST VREG
4 20
TPS53513RVER
C2323
NC_1 VDD
5 19
R2306
C2320
2K
SW_1 NC_2
6 18
1/16W
0.1uF
SW_2 VIN_3
7 17
16V 5%
SW_3 VIN_2
L2305 8 8A 16
1uH
SW_4 VIN_1
9 15
C2325
2200pF
C2319
50V
22uF
C2322
10V
470pF
50V
Vout=0.6*(1+R1/R2)
P_DET_BOTH_12_24V
P_DET_BOTH_12_24V
R2349-*1
100
P_DET_BOTH_12_24V
P_DET_BOTH_24_3.5V C2356-*1
0.1uF
R2336-*1 50V
P_DET_BOTH_12_24V
100K
P_DET_BOTH_24_3.5V
P_DET_BOTH_24_3.5V
Power_DET
+12V
+3.5V_ST
P_DET_ONLY_12V
R2325-*1
P_DET_BOTH_12_3.5V R2325 R2330
2.7K
2.7K 0
1%
1% 5%
P_DET_BOTH_24_3.5V
P_DET_ONLY_12V
P_DET_BOTH_12_3.5V
R2326
R2326-*1
1.2K
1.2K
1%
1%
+3.5V_ST
+24V
On-semi
R2348
R2327
0
8.2K
P_DET_BOTH_12_3.5V
P_DET_BOTH_12_3.5V_DIODES
P_DET_BOTH_24_3.5V
IC2308-*1
APX803D29
R2328
1.5K
VCC RESET 1%
3 2
P_DET_BOTH_24_3.5V
1 P_DET_BOTH_12_3.5V
GND
C2357
0.1uF
16V
DDR MAIN 1.5V
+3.5V_ST
L2308
CORE_V_A0/A1
R2319-*1
PVIN_1
1
10.7K
THERMAL
R1
PVIN_2
2
1/16W C2339 C2340 17
1% 0.1uF
10uF
PGND_1
3 IC2303
10V 16V
BD9A300MUV
PGND_2
CORE_V_A0/A1 4
R2320-*1
1.5V_DCDC_ROHM
10.5K
R2
1/16W
1%
1.5V_DCDC_TI
1.5V_DCDC_TI
R2329-*1
15K
+12V
1/16W
VIN_1 1 12 PH_3
THERMAL 5%
VIN_2 PH_2
2 17 11
GND_1 PH_1
3 IC2303-*1 10
C2344-*1
TPS54319TRE
GND_2 4 9 SS/TR
L2307
50V 4700pF
1.5V_DCDC_TI
3A
Vout=0.8*(1+R1/R2)
C2326
C2332
C2328
1uF
10uF 10uF
10V
16V
16V
+5.0V normal & USB
C2334
2200pF
+24V
50V
R2342
10K
L2310
120-ohm
VIN_1
1
THERMAL
VIN_2
2
29
VIN_3
C2309 C2311 C2329 3
0.1uF
10uF 10uF IC2304
50V
PGND_1
35V 35V 4
SN1302001(TPS65286RHDR)
OPT
PGND_2
5
PGND_3
6
6A
V7V
7
C2330
0.0068uF
50V
MID_LG1311
PAGE 8
R2327-*1
8.2K
R2328-*1
P_DET_BOTH_12_24V
1.5K
R2336-*2
1%
100K
R2325-*2
2.7K
C2356-*2
R2349-*2
1%
100 0.1uF
50V
P_DET_BOTH_12_24V
P_DET_BOTH_12_24V
R2326-*2
1.2K
1%
RESET IC_DIODES
IC2307-*1
APX803D29
VCC RESET
R2337 3 2
+3.5V_ST
100K
1
R2338
RESET IC_ROHM GND
10K
IC2307
OPT
BD48K28G
R2350
POWER_DET
VDD VOUT 100
3 2
1
C2355
0.1uF
GND
16V
C2365
0.1uF
16V
P_DET_BOTH_12_3.5V
R2336
100K
not to RESET at 8kV ESD
P_DET_BOTH_12_3.5V_ROHM
IC2308
BD48K28G
R2349
VDD VOUT 100
3 2
1 P_DET_BOTH_12_3.5V
24V-->3.48V
C2356
GND
0.1uF 12V-->3.58V
50V
ST_3.5V-->3.5V
POWER_ON/OFF2_2
C2353
0.1uF
16V +1.5V_DDR
C2341
0.1uF
16V
NR5040T2R2N
L2309
2.2uH
SW_3
12
SW_2
11
3A
C2345 C2349
SW_1
10
22uF 22uF
C2342 10V 10V
SS
9
0.01uF
50V C2354
100pF
R1
50V
R2331
1.5V_DCDC_TI
1/16W 330K 5%
R2329
C2344
8.2K
1% 1/16W
50V 2700pF
R2
1.5V_DCDC_RHOM 1.5V_DCDC_RHOM
R2
OPT
C2335 C2336
100pF 0.047uF
50V 25V
C2348 C2351 C2352
22uF 22uF 10uF
R1 10V 10V 10V
C2343
82pF
50V
LX_3
21 L2311
4.7uH
LX_2
20
LX_1 C2338
19
0.047uF +5V_NORMAL
L2311 Change, 131120
BST 25V for Currnet UP
18
SW_IN2
17
C2350
SW_IN1
16 1uF
10V
NFAULT1
15
Vout=0.6*(1+R1/R2)
5V:R1-36K, R2-4.8K
5.1V:R1-51K, R2-6.8K
2013.03.22
POWER 8 31
LGE Internal Use Only