LG 79UF9500 Service Manual page 41

+3.5V_ST
OS MODULE
R2301 SMAW200-H28S5K[MIRROR] SMAW200-H24S5[MIRROR]
10K
R2300 P2301
RL_ON
10K
PWR_ON
1 1
L2301
+3.5V_ST R2304100 PDIM#1
UBW2012-121F PWM_DIM 3 3
3.5V
5 5
3.5V
C2302 7 7
0.1uF GND
9 9
16V
12V
11 11
+12V
12V
13 13
UBW2012-121F
12V
15 15
GND
17 17
C2304 L2302
24V
0.1uF 19 19
UBW2012-121F
50V 24V
21 21
GND
23 23
OS MODULE
L2303 L/D_CLK
L/D_CLK 25
L/D_DI
27
L/D_DI 25
29
Digital Power B/D INCH 24 PIN 22 PIN
O 40 ~ 65 NC GND
X GND
70 ~ 79 24V
'15 UHD POWER
+3.3V - eMMC
+3.3V_NORMAL +1.8V
3.3V_EMMC DVDD18_EMMC
L2304 L2305
PZ1608U121-2R0TF PZ1608U121-2R0TF
C2308 C2307
C2309 C2312
0.1uF 0.1uF
22uF 22uF
16V 16V
10V 10V
+1.8V - LM15U, eMMC
& Vx1 pull-up
+1.8V
+3.3V_NORMAL
IC2301
AZ1117EH-ADJTRG1
IN OUT
ADJ/GND
+3.3V_NORMAL
+12V
IC2302 L2306
L2300 BD86106EFJ
2uH
EAN62653301 [EP]
BLM18PG121SN1D
PGND SW_2
1 8
Placed on SMD-TOP
VIN SW_1 OPT
2 7
C2306
C2313 C2314
AGND EN
0.0068uF
3 6 10uF 10uF
C2300 C2301 C2303 R2302
50V
10uF 10uF 0.1uF 20K 10V 10V
FB 6A COMP
16V 16V 16V
4 5
OPT
R2303
POWER_ON/OFF2_1
10K
C2305
0.1uF
16V
Vout=0.8*(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 ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+12V
L2321
LGE MODULE
MLB-201209-0120P-N2
P2300
+3.3V_NORMAL
R2314
1K
R2311 100 INV_CTL
INV_CTL
2 2
100
PDIM#2 R2313
4 4 PWM_DIM2
GND
6 6
3.5V NON_DIGITAL_POWER_B/D
8 8
L2317
GND
10 10 UBW2012-121F
12V
12 12
12V
14 14
L2307
+24V
GND
16 16
UBW2012-121F
24V
18 18
24V
20 20
C2319
L2308
GND or 24V
22 22 UBW2012-121F 0.1uF
NC or GND 50V
24 24
GND
26 DIGITAL_POWER_B/D
L/D_VSYNC L2315
28
UBW2012-121F
OS MODULE
L/D_VSYNC
+12V
L2316
UBW2012-121F
NON_DIGITAL_POWER_B/D
C2316 C2317 C2318
10uF 10uF 10uF
16V 16V 16V
+12V
L2309
PZ1608U121-2R0TF
+3.3V_NORMAL
C2322
10uF
16V
1.0V_DCDC_TI
C2332-*1
3300pF
50V
Switching freq: 700K
R2309
1
C2310 C2311
10uF 10uF +1.1V or +1.15V _CPU CORE
10V 10V
L2310
PZ1608U121-2R0TF
MAX A Placed on SMD-TOP
C2320 C2321
10uF 10uF
16V 16V
+3.3V_NORMAL
R2305
OPT OPT OPT
1.5K
C2342 C2345 C2348
C2358 1% R1
10uF 10uF 47pF
100uF
50V
10V 10V R2306
30K
1%
Vout=0.8*(1+R1/R2)
R2
R2310
10K R1:15K/R2:56K, V=1.00V(CPU_VID0=L,CPU_VID1=L)
1%
R1:15K/R2:56K//240K, V=1.05V(CPU_VID0=H,CPU_VID1=L)
R1:15K/R2:56K//240K, V=1.05V(CPU_VID0=L,CPU_VID1=H)
R1:15K/R2:56K//240K//240K, V=1.10V(CPU_VID0=H,CPU_VID1=H)
PANEL_POWER
L2322
MLB-201209-0120P-N2
C2327 C2331
C2330
10uF
0.1uF 0.01uF AOS_PANEL_POWER_FET
IC2309
25V 50V
25V AO4447A
OPT
S_1 D_4
1 8
OPT OPT
OPT
S_2 D_3
R2329 C2335 C2367 C2315 2 7
10uF 10uF
10K 1uF
S_3 D_2
3 6
25V 25V 25V
G D_1
4 5
R2331
1.8K
C2368
10uF
C
R2328 25V
10K B Q2321
PANEL_CTL OPT
2N3904S
KEC_PANEL_CTL_TR
C2371
E
10uF
C
10V
B Q2321-*1
MMBT3904(NXP)
NXP_PANEL_CTL_TR
E
DDR +1.5V
POWER_ON/OFF2_3
C2324
ROHM_BD9D321_1.5V_DDR_DCDC
0.1uF
IC2303
R2326
BD9D321EFJ
[EP]
10K
EN VIN
1 8
16V
0.1uF
C2336
R2320 R2321 FB BOOT
2 7
R1
18K 4.7K
1% 1%
VREG SW
3 6
C2325
100pF PS064T-2R2MS
50V
SS GND
3A
4 5
R2322
22K
C2328 C2332
1%
1uF 2200pF
10V 50V
1.0V_DCDC_ROHM
R2
Vout=0.765*(1+R1/R2)=1.554V
+12V
IC2300 L2311
BD86106EFJ 2uH
EAN62653301 [EP]
PGND SW_2
1 8
VIN SW_1 OPT OPT OPT
2 7
C2329 C2353 C2333 C2334 C2354 C2356
AGND EN
0.0068uF
3 6 10uF 10uF 10uF 10uF
C2323 R2324 100uF
50V
0.1uF 10V 10V 10V 10V
6.8K
FB 6A COMP
16V 4 5
OPT
POWER_ON/OFF2_4
R2-1.13V
R2325
C2326 10K
0.1uF
R2317
16V
+3.3V_NORMAL
R2318
200K
1%
R2312
10K
R2316
G
CPU_VID0
0 5%
Voltage drop 0.01V
D
Voltage drop 0.01V
Q2301-*1
Voltage drop 0.01V G
2N7002K
Voltage drop 0.01V
S
DIODEDS_CPU_CORE_VID_FET
Power_DET
TYP 6000mA
PANEL_VCC
+12V
R2359 R2360
C2369
C2370
2K 2K
10uF
0.1uF
OPT OPT
25V
25V
OPT
ROHM_PANEL_POWER_FET
IC2309-*1
RRH140P03TB
S_1 D_4
1 8
S_2 D_3
2 7 PD_20V
PD_UHD_24V
R2340-*1
R2340-*2
S_3 D_2
3 6 5.6K
9.1K
1%
G D_1 1%
4 5
PD_20V
PD_UHD_24V
R2341-*1
R2341-*2
1.3K
1.6K
1%
1%
+5.0V normal & USB
+1.5V_DDR +24V
TI_TPS54327_1.5V_DDR_DCDC
IC2303-*1
TPS54327DDAR
[EP]GND
L2314
EN VIN
1 8
120-ohm
VFB VBST
2 7
VREG5 SW VIN_1
3 6 1
SS GND
4 5 VIN_2
2
VIN_3
C2340 C2341 C2344 3
0.1uF
10uF 10uF
50V
PGND_1
35V 35V 4
SN1302001(TPS65286RHDR)
OPT
PGND_2
5
L2312
2.2uH PGND_3
6
V7V
7
DCDC_DIODE
C2338 C2339 ZD2302
22uF
22uF 2.5V
10V
10V
C2346
0.0068uF
50V
MAX 2.7A
+1.1V_VDDC_CPU LM15 Power SEQUENCE
R2332
R1
15K
1%
C2337
47pF
50V
POWER_ON/OFF2_3(1.5V, 2.5V)
R2-1.13V
R2333
13K
1%
R2327
20K 20K
1% 1% R2334
R2
43K
1%
+3.3V_NORMAL
R2330
200K
1%
D R2319 D
R2-1.1V
10K
R2323
G
CPU_VID1
S S
0 5%
D
Q2302-*1
G
2N7002K
S
DIODEDS_CPU_CORE_VID_FET
RESET_IC_DIODES
IC2307-*1
APX803D29
RESET
2
PD_20_24V_DIODES
+3.5V_ST +3.5V_ST IC2308-*1
R2349
100K APX803D29
PD_+12V PD_+3.5V R2354
RESET_IC_ROHM RESET 2
R2335 R2343
10K
IC2307
0
2.7K
OPT
1% 5% BD48K28G
POWER_DET
VDD VOUT
3 2
1
C2350
PD_+12V
0.1uF
GND
R2336
16V
1.2K
C2364
1%
0.1uF
16V
PD_20_24V
R2348
+24V
100K
C2365
PD_20_24V_ROHM
0.1uF PWR_DET_SEPARATE
IC2308 16V
PD_24V
R2340 BD48K28G
8.2K
1% R2356
POWER_DET_1
0
VDD VOUT
3 2
PWR_DET_SEPARATE
1
PD_24V
C2351
GND
R2341 0.1uF
24V-->3.48V
1.5K
16V
1% 20V-->3.51V
PD_20_24V
12V-->3.58V
ST_3.5V-->3.5V
C2347 R2
OPT
2200pF
C2349 C2352
50V
100pF 0.047uF
R2344 50V 25V
10K
C2359 C2362 C2363
22uF 22uF 10uF
10V 10V 10V
R1
C2357
82pF
50V
LX_3
21 L2313
4.7uH
THERMAL
LX_2
29 20
LX_1 C2355
19
+5V_NORMAL
0.047uF
IC2305
BST 25V
18
SW_IN2
17
C2360
SW_IN1
16 1uF
6A
10V
NFAULT1
15
Vout=0.6*(1+R1/R2)
5.1V:R1-51K, R2-6.8K
POWER_ON/OFF1(5V)
POWER_ON/OFF2_1(3.3V)
POWER_ON/OFF2_4(1.1V)
LM15U 2014-00-01
07
LM15U_PWR_1_UHD
LGE Internal Use Only
VCC
3
1
GND
3 VCC
1
GND
not to RESET
at 8kV ESD