LG 55UF6800 Service Manual page 36

'15 UHD 13V ONLY POWER
+3.5V_ST
R2306
10K
RL_ON
R2301
10K
Q2300
12P_POWER_WAFER
MMBT3906(NXP)
P2301
C2345 SMAW200-H12S5K(BK)(LTR)
C2335
10uF 0.1uF
Default_Amotech
VA2301
5.6V
AMOTECH CO., LTD.
1 2
3 4
UF77:24V_AMP
+24V_AMP
L2313 5 6
UF68/64:13V_AMP
UBW2012-121F
7 8
C2348
0.1uF 9 10
11 12
13 14
Default_Amotech
VA2300 15 16
5.6V
AMOTECH CO., LTD.
17
+3.3V_NORMAL
C2302
0.1uF 16P_POWER_WAFER
P2302
SMAW200-H16S5K(BK)(LTR)
R2300
1K
INV_CTL
R2304
100
+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
C2310
10uF
10V
+12V +3.3V_NORMAL
L2300
POWER_ON/OFF2_1
PZ1608U121-2R0TF
C2300 C2301 ROHM_BD9D321_1.5V_DDR_DCDC
10uF 0.1uF
25V
25V
IC2300
R2314
BD9D321EFJ
10K
ESD_DCDC
EN
C2372
1 8
0.1uF
R2302 R2303 FB
2 7
R1
18K 1K
1%
1%
VREG
3 6
C2303
3.3V_DCDC_TI 100pF
50V
SS
C2306-*1 3A
4 5
3300pF
R2305
50V
5.6K
C2305 C2306
1%
1uF 2200pF
10V 50V
3.3V_DCDC_ROHM
Switching freq: 700K R2
Vout=0.765*(1+R1/R2)=3.36V
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.
+12V
+12V
L2311
UBW2012-121F
L2302
UBW2012-121F
C2304
UF77:12V
0.1uF
UF68/64:13V
100
PWM_DIM2 RL_ON
R2341
EPI
Default_Amotech
PANEL_CTL
VA2303 R2312 R2363
5.6V 4.7K 0
AMOTECH CO., LTD. OPT
OPT
100
PWM_DIM
R2309
EPI
R2311
4.7K
Default_Amotech
VA2304 OPT
5.6V R2310
AMOTECH CO., LTD. 33
OPT
PWM_TOUT
R2340
33
Vx1
PWM_TIN
+12V
L2309
PZ1608U121-2R0TF
+3.3V_NORMAL
C2322 C2324
10uF
0.1uF
25V
25V
1.5V_DCDC_TI
C2332-*1
3300pF
50V
Switching freq: 700K
+3.5V_ST
+12V
C2311
10uF
10V
C2316
10uF
25V
+3.3V_NORMAL
TI_TPS54327_1.5V_DDR_DCDC
IC2300-*1
TPS54327DDAR
[EP]GND
EN VIN
1 8
VFB VBST
2 7
[EP] VREG5 SW
3 6
SS GND
4 5
VIN
16V
0.1uF
C2313
BOOT
L2306
2.2uH
SW
PS064T-2R2MS
DCDC_Diode
GND
ZD2300
C2314 C2317
22uF
22uF
10V
10V
PANEL_POWER
TYP 6000mA
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
S_2 D_3
R2329 C2367 C2315 2 7
10uF
10K 1uF S_3 D_2
3 6 R2359
25V 25V
2K
G D_1
4 5
OPT OPT
OPT
R2331
R2361
1.8K
0
C
R2362 R2328
0 10K
B Q2321
2N3904S
C2371 KEC_PANEL_CTL_TR
E
10uF
C
10V
B Q2321-*1
MMBT3904(NXP)
NXP_PANEL_CTL_TR
E
DDR +1.5V
POWER_ON/OFF2_3
ROHM_BD9D321_1.5V_DDR_DCDC
IC2303
R2326
BD9D321EFJ
[EP]
10K
ESD_DCDC
0.1uF
EN VIN
1 8
C2336
0.1uF
C2349
25V
R2320 R2321 FB BOOT
2 7
R1
18K 4.7K L2312
1% 1%
2.2uH
VREG SW
3 6
C2325
100pF PS064T-2R2MS
50V
SS GND
3A
4 5 C2338
22uF
R2322
10V
22K
C2328 C2332
1%
1uF 2200pF
10V 50V
1.5V_DCDC_ROHM
R2
Vout=0.765*(1+R1/R2)=1.554V
+3.5V_ST
IC2304
TPS563200
GND VBST
1 6
ESD_DCDC
L2307 0.1uF
DCDC_Diode
2.2uH C2350
SW EN
ZD2301 2 5
3A
PS064T-2R2MS
VIN VFB
3 4
R2
C2321
C2318 C2319
22uF
0.1uF 22uF
10V
25V 10V
Vout=0.765*(1+R1/R2)
Power_DET
+12V
PANEL_VCC
R2360
C2369
C2370
2K
10uF
0.1uF
25V
25V
ROHM_PANEL_POWER_FET
IC2309-*1
RRH140P03TB
S_1 D_4
1 8
S_2 D_3
2 7
S_3 D_2
3 6
G D_1
4 5
+5V_Normal & +5V_USB with OCP
+1.5V_DDR
TI_TPS54327_1.5V_DDR_DCDC
IC2303-*1
TPS54327DDAR
[EP]GND
EN VIN
1 8
VFB VBST
2 7
VREG5 SW
3 6
SS GND
4 5
R2334
OPT
100K
C2320
100pF
50V
C2326
R2318
4700pF
4.7K 50V
+3.3V_NORMAL
OPT
R2333
0
OPT
DCDC_Diode
R2317
C2339 ZD2302 4.7K
22uF
2.5V
10V
USB_CTL3
+3.3V_NORMAL
R1
LM15 Power SEQUENCE
POWER_ON/OFF1(5V)
POWER_ON/OFF2_1(3.3V)
POWER_ON/OFF2_3(1.5V)
POWER_ON/OFF2_4(1.1V)
LM14A_PWR_1_13V_only
R2327
+3.5V_ST
100K
R2332
RESET_IC_KEC(MULTI)
10K
IC2306
OPT
KIC7529M2
R2330
POWER_DET
VCC OUT 100
3 2
C2333 1
0.1uF GND
25V
C2334
0.1uF
16V
not to RESET at 8kV ESD
RESET_IC_DIODES(MULTI)
IC2306-*1
APX803E29
VCC RESET
3 2
1
GND
13V-->3.53V
+12V
L2308
50V
0.0068uF
C2337
C2346 10uF
OPT +5V_NORMAL
C2341 L2310
0.047uF
4.7uH
25V
EN BST
1 18
THERMAL
COMP LX_2
25 R2337 C2343 C2344
2 17
18K 82pF 22uF
SS LX_1 1%
50V 16V
3 16
IC2302 R1
ROSC FB
4 15
TPS65282REGR
R2
EN_SW2 SW_IN_2
5 14
4A
R2339
EN_SW1 SW_IN_1 3.3K
6 13
1%
C2342
10uF
+5V_USB_3
10V
R2335
10K
OPT
R2336
15K
5%
Vout=0.8*(1+R1/R2)
LM14A(UF68/UF64) 2015-01-23
23
DCDC_Diode
ZD2303