LG 77EG9700 Service Manual page 28
Chassis: ea41c
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Also See for 77EG9700:
- Owner's manual (56 pages) ,
- Operating manual (53 pages) ,
- Owner's manual (44 pages)
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eMMC POWER
+3.3V_NORMAL
3.3V_EMMC
L2302
BLM18PG121SN1D
C2305
C2300
0.1uF
22uF
16V
10V
+12V
+1.0V_VDD
L2300
BLM18PG121SN1D
C2301
C2359
10uF
0.1uF
DCDC_ROHM
16V
IC2300
BD9D320EFJ
R2304
10K
POWER_ON/OFF2_3
EN
1
1%
FB
2
R1
R2302
11K
VREG
3
C2308
100pF
50V
SS
3A
4
1.0V_DCDC_TI
C2312-*1
R2306
3300pF
33K
C2310
C2312
50V
1uF
2200pF
10V
50V
1%
1.0V_DCDC_ROHM
R2
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 right reserved.
Only for training and service purposes
POWER_ON/OFF2_2
+3.3V_NORMAL
+3.3V_NORMAL
C2327
0.1uF
R2341
16V
10K
22
1.5K
R2333
R2342
LD2300
Q2303
2SC3052
LG1154A
+1.0V_VDD
[EP]FIN
VIN
8
16V
0.1uF
C2314
BOOT
7
NR5040T2R2N
L2307
2.2uH
DCDC_TI
SW
6
IC2300-*1
TPS54327DDAR
[EP]GND
EN
VIN
GND
1
8
5
C2340
C2348
VFB
VBST
22uF
22uF
2
7
POWER_ON/OFF2_4
10V
10V
VREG5
SW
3
6
SS
GND
4
5
C2361
22uF
POWER UP SEQUENCE
5V/3.3V->2.5V->1.5V/1.1V->1.0V
LG1154D
LG1154AN : 3.3V->2.5V->1.0V
+2.5V
else : Max 0.7A
IC2302
R2312
AP2132MP-2.5TRG1
[EP]
10K
C2341
1
8
0.1uF
PG
GND
2
7
EN
ADJ
3
6
VIN
VOUT
2A
+5V_NORMAL
4
5
NC
VCTRL
EAN61387601
C2337
1uF
Vout=0.6*(1+R1/R2)
+1.2V_CORE
R2359
10K
R1
R2362
39K
1/16W
5%
C2370
1000pF
50V
R2
RF
FB
1
23
THERMAL
PGOOD
GND
2
29
22
R2356
1K
EN
MODE
3
21
16V
IC2309
0.1uF
VBST
VREG
4
20
TPS53513RVER
C2372
NC_1
VDD
5
19
C2369
R2355
2K
SW_1
NC_2
6
18
0.1uF
1/16W
SW_2
VIN_3
7
17
16V
5%
SW_3
VIN_2
L2321
8
8A
16
1uH
SW_4
VIN_1
9
15
C2353
C2366
C2373
22uF
22uF
2200pF
50V
C2371
470pF
50V
Vout=0.6*(1+R1/R2)
: 3.3V->2.5V->1.5V->1.1V
Power_DET
+12V
PD_+12V
R2325
2.7K
PD_OLED_AC
1%
R2398
39K
1%
OLED_AC_DET
PD_+12V
PD_OLED_AC
R2326
R2399
1.2K
22K
1%
1%
+24V
PD_20V
PD_UHD_24V
R2327-*1
R2327-*2
5.6K
9.1K
1%
1%
PD_20V
PD_UHD_24V
R2328-*1
R2328-*2
1.3K
1.6K
1%
1%
+12V
T2 : Max 1.7A
Main +1.5V
L2301
+2.5V_Normal
BLM18PG121SN1D
C2302
C2360
R2
10uF
0.1uF
16V
R1
POWER_ON/OFF2_3
UB95/95/UC97_H13_DDR_Voltage
R2303
R2305
R1
18K
4.3K
C2342
1%
1%
10uF
10V
C2303
100pF
50V
1.0V_DCDC_TI
C2315-*1
R2307
3300pF
22K
50V
1%
UB98/UC9_H13_DDR_Voltage
R2305-*1
R2
4.99K
Vout=0.765*(1+R1/R2)=1.516V
1%
+12V
L2322
C2374
C2375
C2376
1uF
10uF
10uF
10V
16V
16V
RESET_IC_DIODES
IC2307-*1
APX803D29
RESET
VCC
2
3
1
GND
OPT
PD_20_24V_DIODES
+3.5V_ST
IC2308-*1
R2337
+3.5V_ST
100K
APX803D29
PD_+3.5V
RESET_IC_ROHM
R2338
RESET
VCC
2
3
R2330
10K
IC2307
0
1
BD48K28G
PWR_DET_MERGE
5%
GND
POWER_DET
VDD
VOUT
3
2
C2355
1
0.1uF
GND
16V
C2365
0.1uF
16V
OPT
not to RESET
R2336
at 8kV ESD
100K
C2362
PD_20_24V_ROHM
0.1uF
PWR_DET_SEPARATE
IC2308
16V
PD_24V
R2327
BD48K28G
8.2K
1%
R2316
POWER_DET_1
VDD
VOUT
0
3
2
PWR_DET_SEPARATE
1
PD_24V
C2356
GND
R2328
0.1uF
24V-->3.48V
1.5K
16V
1%
20V-->3.51V
PD_20_24V
12V-->3.58V
ST_3.5V-->3.5V
+1.5V_DDR
DCDC_TI
IC2303-*1
TPS54327DDAR
DCDC_ROHM
EN
IC2303
1
BD9D320EFJ
VFB
[EP]FIN
2
VREG5
3
R2313
SS
EN
VIN
4
10K
1
8
16V
0.1uF
C2318
FB
BOOT
2
7
L2308
2.2uH
VREG
SW
3
6
NR5040T2R2N
SS
GND
3A
4
5
C2320
C2321
ZD2303
22uF
22uF
2.5V
10V
10V
OPT
C2313
C2315
1uF
2200pF
10V
50V
1.0V_DCDC_ROHM
BSD-14Y-UD-023-HD
2013-12-17
POWER
LGE Internal Use Only
[EP]GND
VIN
8
VBST
7
SW
6
GND
5
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