LG 50PM4700 Service Manual page 23

fr. PWR SUPPLY UNIT
17V
GND
5V
NC
+5V_ST
NC
GND
5V_ST
RL_ON
RL_ON
MOD_ON
C1102
0.1uF
16V
MOD_ON
C1103
0.1uF
16V
+3.3V_Stand_By
+5V_ST
+3.3V_ST
IC1100
AP2121N-3.3TRE1
VIN VOUT
3 2
1
GND
C1101 C1105
0.1uF 1uF
16V 10V
P_+17V
C1104
C1106
10uF
10uF
25V
25V
IC1101
TPS54327DDAR
R1145
0 OPT EN
1
POWER_ON2
R1
1%
VFB
2
R1102
C1107
22pF 33K VREG5
3
50V
C1118 SS
4
1uF
R1103
10V
10K 3A
C1149
3300pF
R2
50V
1%
Vout=0.765*(1+R1/R2)
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2012 LG Electronics Inc. All rights reserved.
Only for training and service purposes
P1100
P_+17V
SMAW200-H18S1
L1100
CIS21J121
C1112
0.1uF
50V
17V
1 2
P_+5V
GND
3 4
L1101
5V
5 6 CIS21J121
PSU_ERR
C1110 C1113
7 8
10uF 0.1uF
PSU_ERR_DET
10V 16V
GND
9 10
GND
11 12
NC
13 14
AC_DET
15 16
AC_DET
GND
17 18
19
+3.3V_MULTI
INPUT
C1116
10uF
6.3V
T2_S_BR
P_+17V
+3.3V_MULTI
C1111
C1114
10uF
10uF
25V
25V
[EP]GND
VIN
8
16V
POWER_ON3
0.1uF
C1150
VBST R1
1%
7
L1107
NR5040T2R2N R1106
SW C1121
6 18K
22pF
50V
2.2uH
GND
5
C1151 C1152
22uF 22uF
6.3V 6.3V
R2
+1.2V_CORE_MT5369
+5V_ST
L1102
CIS21J121
Placed on SMD-TOP
C1100 C1108
10uF 10uF
C1109 10V 10V
C1129
10uF 100uF
10V
16V
+1.8V_TU
+1.25V_TU
+1.25V_TU
T2_S_BR
IC1103
AZ1117BH-ADJTRE1
ADJ/GND
OUTPUT
C1119
10uF
6.3V
240
T2_S_BR
R1112
T2_S_BR
*V0=1.25(1+1/240)
1.250000=1.25*(1)
+1.5V_DDR
IC1105
TPS54327DDAR
[EP]GND
R1116
0 EN VIN
OPT
1 8
16V
0.1uF
C1124
VFB VBST
2 7
L1103
NR5040T2R2N
VREG5 SW
3 6
2.2uH
C1122 SS GND
4 5
R1115 1uF
C1125
10V
3A 22uF
51K C1123
6.3V
3300pF
50V
1%
Vout=0.765*(1+R1/R2)
L1104
IC1102 2uH
AOZ1038PI [EP]LX
PGND NC_2
1 8
C1128 C1130 C1132 C1133
VIN NC_1 10uF 10uF 10uF 10uF
2 7 6.3V 6.3V 6.3V 6.3V
AGND EN
3 6
R1108
3.3K
FB 6A COMP
4 5
POWER_ON1
R1118
R1120
10K 10K
OPT
Switching freq: 555K
Vout=Vref*(1+R1/R2)|Vref=0.8
+3.3V_MULTI
+1.8V_TU
R1119
IC1104 R2 82
AZ1117BH-ADJTRE1 1%
INPUT ADJ/GND
3 1
R1114
1
2
R1131
C1117 R1 180
OUTPUT
10uF
5%
6.3V C1120
10uF
6.3V
*V0=1.25(1+82/180)
=1.8194
17V->12V
P_+17V
S
C1141
0.1uF
50V
BOOT
1
VIN
2
-->3.12V
EN
3
S S
C1131 C1135
C1126 C1138
10uF 0.01uF SS
22uF 22uF
4
25V 50V
6.3V 6.3V
S
C1140
0.01uF
50V
R1107
0 OPT
POWER_ON4
Vout=0.8*(1+R1/R2)
+1.2V_MTK_CORE
R1
R2
+3.3V_MULTI
+3.3V_TU
L1108
BLM18PG121SN1D
C1148
0.1uF
16V
+12V_LNB
Max 1.3A
L1106
22.0uH
EAP61606601
IC1106
S
TPS54231D
S S R1
C1145 C1146
10uF 10uF
PH
16V 16V
8
GND
7
S
COMP R1139
6 6.8K
1%
S
R2
VSENSE R1140
C1144
5
470pF 1.6K
2A
S 1%
50V
C1147
15pF
S 50V
R1135
51K
*NOTE 13
LGE Internal Use Only