LG 55UF6790, Service Manual

Page: 37 / 100

THERMAL
THERMAL
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.
LM15U_PWR_2_ALL
2015-01-21
25
LM14A
C2508
10uF
10V
OPT
C2500
10uF
25V
C2505
10uF
10V
OPT
C2503
0.1uF
16V
C2502
0.1uF
25V
OPT
C2504
0.0068uF
50V
C2501
10uF
25V
C2506
10uF
10V
L2500
PZ1608U121-2R0TF
R2501
10K
POWER_ON/OFF2_4
C2507
100uF
+1.1V_VDDC
C2511
47pF
50V
+12V
R2510
15K
1%
C2509
10uF
10V
OPT
L2501
2uH
R2500
6.8K
IC2501
BD86106EFJ
EAN62653301
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
SW_1
8
SW_2
9
[EP]
R2511 56K 1/16W 1%
R
2
5
1
2
6
.
2
K
1
/
1
6
W
1
%
L2502
PZ1608U121-2R0TF
R2521 5.6K 1%
CPU_VID0
C2512
10uF
16V
UF77
Q2502 2N7002KA
KEC_CPU_CORE_VID_FET(MAIN)
G
D
S
POWER_ON/OFF2_4
R2518
0 5%
R
2
5
1
5
2
2
K
1
%
R2524
10K
L2503
2.2uH
PS064T-2R2MS
+3.3V_NORMAL C2515
1uF
10V
R2513
10K
R
2
5
1
6
7
5
K
1
%
+3.3V_NORMAL
R2514
0 5%
C2514
100pF
50V
Q2502-*1
2N7002K
DIODEDS_CPU_CORE_VID_FET(SUB)
S
D
G
IC2502
TPS54427DDA
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
R
2
5
2
2
1
1
K
1
%
+1.1V_VDDC_CPU
C2517
0.1uF
16V
Q2503-*1
2N7002K
DIODEDS_CPU_CORE_VID_FET(SUB)
S
D
G
+12V
R2517
10K
Q2503 2N7002KA
KEC_CPU_CORE_VID_FET(MAIN)
G
D
S
C2513
0.1uF
16V
OPT
C2518
22uF
10V
C2516
2200pF
50V
R
2
5
2
3
1
0
K
1
%
CPU_VID1
C2510
10uF
16V
UF77
C2519
22uF
10V
R
2
5
2
0
1
.
6
K
1
%
ZD2500
DCDC_DIODE_0DTKE00018A(KEC)
0DTKE00018A
ZD2501
DCDC_DIODE_0DTKE00018A(KEC)
0DTKE00018A
R
2
5
1
9
7
5
K
1
/
1
6
W
1
%
CPU_VID_LM14_A1
R2519-*1
27K
1/16W
1%
CPU_VID_LM14_A0
CORE_VID0
R2505
56K
1
/
1
6
W
1%
LM14A_A0_ONLY
Q2500 2N7002KA KEC_CPU_CORE_VID_FET
G
D
S
R2503
0 5%
LM14A_A0_ONLY
Q2500-*1
2N7002K
DIODEDS_CPU_CORE_VID_FET
S
D
G
R2504
15K
1
/
1
6
W
1%
LM14A_A0_ONLY
R2502
10K
LM14A_A0_ONLY
+3.3V_NORMAL
CORE_VID1
ZD2500-*1
0DR050008AA
DCDC_DIODE_0DR050008AA(SEMTECH)
ZD2501-*1
0DR050008AA
DCDC_DIODE_0DR050008AA(SEMTECH)
C2512-*1
10uF
25V
UF64/68
C2510-*1
10uF
25V
UF64/68
Placed on SMD-TOP
LM14A CORE
Vout=0.8*(1+R1/R2)
6A
MAX 3A
R1
R2
Vout=0.765*(1+R1/R2)
Boot
High
1.01
Placed on SMD-TOP
LM14A CPU
Kernel
Low
1.06
R2
R2-2
LM14_A1
V_out
Kernel
R1
Low Low
R2-1
High
High
0.96
4A
LM14_A0
V_out
1.163
1.013
0.969
R2-1.13V
LM14_A1
V_out LM14_A0
V_out
Boot
Kernel
0.98
0.98
0.98
1.15
LM14A1 CORE_VID1 NOT USE.
BSD-15Y-LM14A-025_00-HD
Delete this part when LM14A0 used all.