LG 65EF9500 Service Manual page 42

LM14A CPU
+12V
L2502
PZ1608U121-2R0TF
Placed on SMD-TOP
UF64/68
UF64/68 UF77 UF77
C2510-*1
C2512-*1 C2510 C2512 C2513
10uF 10uF 0.1uF
10uF 10uF
16V 16V 16V
25V 25V OPT
R2519-*1
27K
CPU_VID_LM14_A0
1/16W
+3.3V_NORMAL +3.3V_NORMAL
R2513 D R2517 D
10K 10K
R2514 R2518
G G
CPU_VID0 CPU_VID1
S S
0 5% 0 5%
D D
Q2502-*1 Q2503-*1
G G
2N7002K 2N7002K
S S
DIODEDS_CPU_CORE_VID_FET(SUB) DIODEDS_CPU_CORE_VID_FET(SUB)
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 rights reserved.
Only for training and service purposes
+1.1V_VDDC_CPU
R1
C2514 IC2502
TPS54427DDA
[EP]GND
100pF
10K
50V
R2524
EN VIN 16V
1 8 0.1uF
C2517
POWER_ON/OFF2_4 VFB VBST
2 7 L2503
2.2uH
R2 VREG5 SW
3 6
PS064T-2R2MS
SS GND
4 4A 5
C2518
22uF
10V
1%
DCDC_DIODE_0DR050008AA(SEMTECH)
0DR050008AA
C2515 C2516
ZD2501-*1
1uF 2200pF
10V 50V
LM14_A1
LM14_A0
R2-1 R2-2
V_out
V_out
Boot High 1.06
High 1.163
Kernel
High Low 1.01 1.013
Kernel Low Low 0.96 0.969
Vout=0.765*(1+R1/R2)
LM14A CORE
+12V
IC2501
L2500 BD86106EFJ
EAN62653301
PZ1608U121-2R0TF [EP]
PGND SW_2
1 8
Placed on SMD-TOP
VIN SW_1
2 7
OPT
C2504
AGND EN
3 6 0.0068uF
C2500 C2501 C2502
R2500 50V
10uF 10uF 0.1uF 6.8K
6A
FB COMP
25V 25V 25V 4 5
C2519
22uF
10V
C2503
0.1uF
16V
LM14_A1 LM14_A0
V_out
V_out
Boot 0.98 1.15
Kernel
0.98 0.98
Vout=0.8*(1+R1/R2)
L2501
2uH
OPT OPT OPT
C2505 C2506 C2508 C2509
C2507
10uF 10uF 100uF 10uF 10uF
10V 10V 10V 10V C2511
47pF
50V
POWER_ON/OFF2_4
R2-1.13V
R2501
10K
LM14A_A0_ONLY
R2504
15K
1%
LM14A_A0_ONLY
R2505
+3.3V_NORMAL
56K
1%
LM14A_A0_ONLY
R2502 D
10K
R2503
G
CORE_VID0
0 5% S
LM14A_A0_ONLY
Delete this part when LM14A0 used all.
D
Q2500-*1
G
2N7002K
S
DIODEDS_CPU_CORE_VID_FET
MAX 3A
+1.1V_VDDC
R2510
R1
15K
1%
R2
DCDC_DIODE_0DR050008AA(SEMTECH)
0DR050008AA
ZD2500-*1
LM14A1 CORE_VID1 NOT USE.
CORE_VID1
BSD-15Y-LM14A-025_00-HD
LM14A 2015-01-21
25
LM15U_PWR_2_ALL
LGE Internal Use Only