JVC LT-42HB1BU Service Manual page 50

MAIN PWB CIRCUIT DIAGRAM (28/46) [STi7103 REGULATORS and DC/DC]
1
NORMAL POWER
TP1071
PCB_TP10
+5V
A
C1072 R1071
104/1005
U1071
106p/10V/2012
7
EN
C1076
104p/16V/1005
8
SS
4
GND
C1080
OPEN-106p/16V/2012 MP2307
C1075
106p/10V/2012
OPEN-561p/50V/1005
MAX: 3A
SYSTEM DDR SDRAM
B
ST_3V3
TP1073
PCB_TP10
CD1089
CD1092
104p/16V/1005
226p/6.3V/2012 ST2V6_ON
TP1075
PCB_TP10
+SYS_VDD_DDR
C1089
100uF/16V/MVK/S
UD1075
1
C
VDD
2
VDD
3
VTTFORCE
4
VSS
5
VSS
6
VTTFORCE
7
VDD
FAN1655M
CD1099
CD1096
226p/6.3V/2012
104p/16V/1005
STb7100_+3V3IO
+SYS_VDD_DDR C1108
R1088 475p/6.3V/2012
333/1005
1
D
R1090
OPEN-222/1005
All location are from 1071 to 1120
1
2
3.364V Max.2.790A
TP1072
PCB_TP10
Vout = 0.92 * (R1+R2)/R2
R1095
C1073
L1071
750/F/1005
226p/6.3V/2012
C1077 SPC10040-4R7M
103p/50V/1005
D1071
OPEN-B340A
R1073
R1
243/F/1005
3
SW
R1075
OPEN-104/1005
1 2
5
FB
D1073
C1078 OPEN-LL4148
6
COMP
C1074 822p/25V/1005
R1072
912/F/1005
R2
R1074
4021/F/1005
Vout = 0.8(1 + R1/R2)
2.6V (+/-)100mV
+SYS_VDD_DDR
Max 1500mA
TP1074
UD1074 RT9183H-PM5
PCB_TP10
2 4
VI VO
5
SEN
CD1094
RD1076
226p/6.3V/2012
R1
TO263-5 272/F CD1090
104p/16V/1005
RD1077
R2
122/F/1005
TP1076
PCB_TP10 +SYS_VTT_DDR +SYS_VREF_DDR
CD1095
102p/50V/1005
SOIC14
14
VDDQ
13
VREFOUT
RD1078
12
VSSQ
11
/SHDN
103/1005
10
VREFIN
9
VTTSENSE
8
VSS
CD1104
CD1101
102p/50V/1005
102p/50V/1005
CD1102 CD1103
226p/6.3V/2012 104p/16V/1005
ST_3V3
ST_3V3
R1089
103/1005
C1109
104p/16V/1005
1
Q1075
IRLML6402TRPBF
Q1073
MMBT4401
C1107
OPEN-104p/16V/1005
C1111 R1093
121/3216
104p/16V/1005
2
(No.YA707<Rev.001>)2-63
3 4
STb7100 Power ON sequnce
+1V(+VDD1) -> +2V5(+VDD_2V5) --> +2V6(DDR) --> +3V3(IO)
ST_3V3
STb710 CORE +1V
TP1077
+5V PCB_TP10
C1098
106p/10V/2012
R1079
C1071
220uF/16V/MVK/S
104/1005
C1083
OPEN-106p/16V/2012
C1086
106p/10V/2012
C1097
104p/16V/1005
C1079
226p/6.3V/2012
Max
790mA
ST_3V3
R1086
103/1005
R1091
ST_1V1 472/1005
R1085
103/1005
C1105
1
OPEN-104p/16V/1005
Q1071
MMBT4401
TP1079
PCB_TP10
C1084
220uF/16V/MVK/S
C1110
106p/10V/2012
+3V3_STI7103
3 4
2-64(No.YA707<Rev.001>)
5
R1094
L1072
750/F/1005
4.7uH/SPC7040-4R7/3.5A
C1085
103p/50V/1005
D1072
R1082
OPEN-B340A
202/F/1005
U1073
7 3
EN SW
R1076
OPEN-104/1005
1 2
8 5
SS FB
D1074
C1081 OPEN-LL4148
4 6
GND COMP
822p/25V/1005
MP2307
C1100
OPEN-561p/50V/1005
R1081
4021/F/1005
MAX: 3A
Vout=0.925 x (1+R1/R2)
ST_3V3
R1087
104/1005
STb7100 CORE +2.5V
Typ.
R1092
101/1005
120mA
ST2V6_ON
Q1072 C1106
1
MMBT4401
105p/16V/1005
MAIN PWB ASS'Y(28/46)
[STi7103 REGULATORS and DC/DC]
HU-71100006
5
6
TP1078
PCB_TP10
ST_1V1
A
C1082
226p/6.3V/2012
1.128 V
Typ. 1200mA
R1
C1088
100uF/16V/MVK/S
R1083
912/F/1005
R2
C1087
B
226p/6.3V/2012
TP1080
PCB_TP10 +SYS_VDD_DDR
ST_2V6
L1074
BLM18PG300SN1D
C1091
104p/16V/1005
C
D
6
hb1_main_0612_28/48_0.0