LG 77EG9700 Service Manual page 66

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
+12V
+1.5V URSA DDR
L13411
POWER_ON/OFF2_1
BLM18PG121SN1D
C13443 C13410
10uF 0.1uF
DCDC_ROHM
16V
IC13403
R13424
BD9D320EFJ
[EP]FIN
10K
EN VIN
1 8
R13421 R13422 FB BOOT
2 7
R1
18K 3.6K
1% 1%
VREG SW
3 6
C13444
100pF
50V
SS GND
3A
4 5
1.0V_DCDC_TI
C13446-*1
R13423
3300pF C13445 C13446
22K
50V
1uF 2200pF
1%
10V 50V
1.0V_DCDC_ROHM
R2
Vout=0.765*(1+R1/R2)=1.516V
+1.15V URSA9 Core
+1.5V_U_DDR
DCDC_TI
IC13403-*1
TPS54327DDAR [EP]GND
EN VIN
1 8
VFB VBST
2 7
VREG5 SW
3 6
SS GND
4 5
16V
0.1uF
C13447
L13412
2.2uH
NR5040T2R2N
POWER_ON/OFF2_3
C13448 C13449
ZD13401
22uF 22uF
2.5V
10V 10V
OPT
VDDC
C13400 C13401
22uF 22uF
R13404
10K
R13407
39K
R1
1/16W
5%
C13403
1000pF
50V R2
RF FB
1 23
THERMAL
PGOOD GND
2 29 22
R13401 1K
EN MODE
3 21
16V
0.1uF IC13402
VBST VREG
4 20
TPS53513RVER
C13405
NC_1 VDD
5 19
C13402 R13400
2K
SW_1 NC_2
6 18
0.1uF 1/16W
SW_2 VIN_3
16V 5% 7 17
SW_3 VIN_2
L13403 8 8A 16
1uH
SW_4 VIN_1
9 15
C13411
C13406
22uF 2200pF
50V
C13404
470pF
50V
Vout=0.6*(1+R1/R2)
MAX 4.7A
+12V
L13402
C13407
C13408 C13409
1uF
10uF
10uF
10V
16V 16V
BSD-14Y-UD-134-HD
2013.12.17
LGE Internal Use Only