LG 43LF5900 Service Manual page 24

+3.4V_ST
Power Wafer
E
R2304 RLON_TR_KEC
10K 2N3906S-RTK
R2301 B
Q2300-*1
RL_ON
C
10K
Q2300
MMBT3906(NXP)
POWER_WAFER_12PIN
P2300
VA2301 SMAW200-H12S5K(BK)(LTR)
5.6V
AMOTECH CO., LTD.
+13V_A
PWR ON PDIM2
1 1 2 2
GND D13V
3 3 4 4
L2301
D13V D13V
UBW2012-121F 5 5 6 6
A13V A13V
7 7 8 8
C2302 GND GND
9 9 10 10
0.1uF DRV-ON PDIM1
11 11 12 12
50V
GND GND
13 14
GND SCLK
15 13 16
L/DIM0_VS
VSYNC SIN
17 18
R2308
1K
P2301
SMAW200-H18S5
OPT
POWER_WAFER_18PIN
+3.3V_NORMAL
R2300
1K
INV_CTL
R2302
100
+3.3V - eMMC 4.41/4.51
+3.3V_NORMAL
L2302
BLM18PG121SN1D
C2307
0.1uF
16V
+1.8V - eMMC 4.51
DVDD18_EMMC
+3.3V_NORMAL
IC2300
AZ1117EH-ADJTRG1
IN OUT
R2311
ADJ/GND
1
+3.3V_NORMAL
+3.4V_ST
SSM3J332R
L2300
UBW2012-121F
R2305 C2301
2.2uF
22K
10V
C2300 C2303
10uF 0.1uF
10V 25V
R2306
2.2K
C
POWER_ON/OFF2_1
Q2303
B
MMBT3904(NXP)
R2303
NPN_NXP
10K E
C
B Q2303-*1
2N3904S
NPN_KEC
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 ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+13V
L2303
UBW2012-121F
C2312
0.1uF
50V
PWM_DIM2
PWM_DIM
PANEL_CTL
R2312
R2313
4.7K
4.7K
L/DIM0_SCLK OPT
OPT
L/DIM0_MOSI
+13V +13V_A
L2314
UBW2012-121F
USING_MTK_PSU
+13V
3.3V_EMMC
L2306
BLM18PG121SN1D
Placed on SMD-TOP
C2315 C2316
C2308
10uF 10uF
22uF
25V 25V
10V
C2309 C2310
10uF 10uF
10V 10V
C2317
5pF
50V
+3.3V_NORMAL
Q2304
C2304
22uF
10V
PANEL_POWER
Q2302 Change: Diodes --> NXP 131118
+13V
Q2302
PMV48XP
L2307
UBW2012-121F
C2321 R2318 C2326
0.1uF
0.1uF
36K
50V 50V
R2319
150K
C
Q2301
B
MMBT3904(NXP)
R2316
NPN_NXP
10K E
C2323
C
4.7uF
NPN_KEC
10V
B Q2301-*1
OPT 2N3904S
E
+1.2V_CORE
L2309
IC2302
2uH
BD86106EFJ [EP]
PGND SW_2
1 8
C2328 C2329 C2331
22uF 22uF 47pF
VIN SW_1
2 7 10V 10V 50V
C2325 OPT
AGND EN
C2318 0.0068uF
3 6
R2317
0.1uF
50V
6.8K
FB 6A COMP
25V 4 5
OPT
R2320
10K
C2322
0.1uF
POWER_ON/OFF1
16V
Vout=0.8*(1+R1/R2)
+3.4V_ST
BLM18PG121SN1D
+3.4V_ST
IC2303
R1
TPS56428DDAR
[EP]GND
C2335
C2324
0.1uF
10uF
25V
EN VIN 25V
DEV
1 8
VFB VBST
2 7 VLS6045EXT-3R6N
C2320
L2305
R2
0.1uF
3.6uH
VREG5 SW
50V
3 6
4A
PG GND
C2332
4 5
22uF
C2319 10V
0.47uF
25V
Vout=0.6*(1+R1/R2)
+13V
PANEL_VCC
R2327
14K
1%
R2328
5.1K
1%
C2333 C2334
10uF 10uF
25V 25V
DDR MAIN 1.5V
+1.2V_MTK_CORE
+3.4V_ST
R1
C2305 C2306
0.1uF 10uF
10V +5V_NORMAL
R2
+5.0V normal & USB
+13V
POWER_ON/OFF2_4
L2308
C2337
0.0068uF
50V
+3.4V_ST
OPT
C2336
100pF
50V
EN
C2338
R2329 4700pF 1
C2341
4.7K 50V
22uF COMP
2
10V
SS
3
ROSC
4
EN_SW2
5
USB_CTL2
EN_SW1
6
USB_CTL1
+3.3V_NORMAL
R2330 R2332
10K 10K
Power_DET
R2339
+3.4V_ST
100K
R2345
P_DET_DIODES
10K
IC2306
OPT
APX803E29
R2344
POWER_DET
VCC RESET 100
3 2
C2344 1
0.1uF GND
25V
C2359
0.1uF
16V
P_DET_ROHM
IC2306-*1
BD48K28G
not to RESET at 8kV ESD
VDD VOUT
3 2
1
GND
IC2301
+1.5V_DDR
TJ2132GDP
[EP]GND
10K
R1
POK GND
R2307
1 8
R2
EN FB
2 7
C2314
0.01uF
IN OUT
50V
3 6
2A
BIAS SS
4 5
ZD2303
C2313 C2339 2.5V
2700pF
10uF OPT
50V 10V
C2311
1uF
10V
Vout=0.6*(1+R2/R1)
+13V
L2310
120-ohm
C2340
10uF
+5V_NORMAL
C2343 L2312
0.047uF
4.7uH
25V
BST
18
THERMAL
R1 C2349
LX_2
25
17 22uF
C2347
R2334
16V
LX_1 82pF
30K
16
1% 50V
FB
IC2304
15
R2
TPS65282REGR
SW_IN_2
14
4A R2336
SW_IN_1 5.6K
13 1%
C2345
10uF
10V
R2333
15K
Vout=0.8*(1+R1/R2)
A5LR_Bring_Up 2014.11.01
POWER
23
LGE Internal Use Only