Block Diagram – Power Supply Section – - Sony LDI-D100B Service Manual

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3 7 6 3 1 5 1 5 0
4-5. BLOCK DIAGRAM – POWER SUPPLY Section –
SYSTEM CONTROLLER
IC501 (5/5)
RESET SIGNAL
XRESET 38 GENERATOR BACKUP +5V
IC504
BATT IN 61
TEMP 70 TH501
HI UNREG
BATT SENS 71
DC IN B+
SWITCH
DC IN MON 84
Q501
DC IN B+
DC IN A/D 73
D781
CHARGE B+
72
T E CHARGE A/D
L 1 3 9 4 2 2 9 6 5 1 3
D789
VIDEO 5V ON 100
DD SENSOR 98
DD MAIN 94
CHARGE ON 95
BATT CHK 96
BATT CONT 97
BATT IN MON 85
w w w
BL ON 93
05
.
M701
(FAN)
L707
FAN 5V
M
L703
L706
SWITCHING
SEN 5V REGULATOR
L704
L710 SWITCHING
MA 5V REGULATOR
B+ SWITCH
VIDEO 5V
Q1331, 1332
L712
V 5V
L705
L711
SWITCHING
D 5V
REGULATOR
DC/DC CONVERTER
T701
D701
L709
12V SWITCHING
REGULATOR
AU 3.5V
L708
(AU VCC)
D702
SWITCHING
Q706, 707
L753 D751
PS701
B+ SWITCH
15.5V
Q751, 753
(HVDD, VVDD)
MA 5V
BACK LIGHT
UNIT
D752
PS702 L754
BL 7V
BL ON
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4-11
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8
HI UNREG
BACKUP +5V
SYSTEM CONTROLLER (IC501) B+
L701
DC/DC CONVERTER
Q702
IC701
46 RE A OUT
8 SCP: A
45
RE VCC
Q703
VCC 18
RE C OUT
40
24 SCP:C
Q704
39 RE D OUT
29 SCP: D
Q701
44 RE B OUT
13 SCP:B
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POWER CONT
20
21 CTL B
22 CTL C/D
L751
SWITCHING
10 CS2
Q705-1
VDD 2
9 EXT2
12 FB2
DC/DC CONVERTER
DC/DC CONVERTER
IC703
T702
SWITCHING
5 CS1
Q705-2
EXT1
6
u 1 6 3
3 FB1
.
15 SHDN2
11
SHDN1
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2 4
9 9 8
DC IN B+
PS501
D782
+5V
REGULATOR
IC503
D783
L702
D784
L752
D785
CHARGE
SWITCH
Q796
CHARGE
CONTROL SWITCH
Q787, 788
D786
B+ SWITCH
Q791, 792
BATTERY
CONTROL SWITCH
BATTERY
Q781, 782
CHECK SWITCH
B+ SWITCH
Q793, 794
BATTERY
1 5 1 5 0 8 9 2 4
CONTROL SWITCH
Q783, 784
B+ SWITCH
Q795
BATTERY
CONTROL SWITCH
Q785, 786
m
c o
4-12
LDI-D100B
2
9 9
J701
F701
DC IN 8.4V
– +
F702
F703
CHARGE B+
BATTERY
TERMINAL
F704
+
Q789
–
F705
9 8 2 9 9
F706