Power (Main Unit) Block Diagram - Sony CVX-V18NS Service Manual

CVX-V18NS/V18NSP

3-6. POWER (MAIN UNIT) BLOCK DIAGRAM

VA-108 BOARD
BATTERY
TERMINAL
F881
CN881
1.25A
BATT (+)
1
2
BATT SW (-)
3
BATT (-)
4
5
VW-1 BOARD
CN902 CN901 CN882
UNREG
18 1 16
UNREG
19 2 15
UNREG GND
2 3 14
UNREG GND
VIDEO WALKMAN
4 4 13
CONNECTOR GND
9 5 12
GND
10 7 10
GND
12 12 5
GND
13 16 1
GND
7 9 8
AU_GND
05
Q882
SWITCH
IC883
5.5V DETECT
Q884
2 VDD OUT 1
SWITCH
IC884
Q881
4.7V DETECT
SWITCH
IC881
2
VDD OUT 1
VOLTAGE REGURATOR
3 VIN VOUT 1
IC843
VOLTAGE REGURATOR
3 VIN 1
VOUT
IC841 IC842
MIC AMP ALC
VCC 8 5 VCC
Q841
BUFFER
3-15
CN883
UNREG
UNREG
GND
GND
Y_GND
C_GND
GND
13
GND
14
CN884
BATT LED
Q883
POWER(1)
SWITCH
POWER(2)
5V
GND
IC821
Q821 AU_GND
Y/C MIX VIDEO AMP
10
BUFFER
10 VCC2
27 VCC1
30 VCC3
Q822
BUFFER
CN-116 BOARD
CN990
UNREG
1 14
UNREG
2 13
GND
3 12
GND
4 11
Y_GND
6 9
C_GND
8 7
GND
2
GND
1
D995
BATT
CN996
LED
CN995
BATT LED
3 8
POWER(1) POWER(1)
4 7 1
POWER(2) POWER(2)
5 6 2
5V 5V
6 5
3
GND GND
7 4 6
AU_GND
1
DT-106 BOARD
3-16
CN991
TO POWER (CAMERA)
UNREG
1
VC-211 BOARD CN501
2 GND
(SEE PAGE 3-17)
Y_GND
3 TO POWER (CAMERA)
VC-211 BOARD CN301
(SEE PAGE 3-17)
5 C_GND
TO POWER (CAMERA)
GND
9 IF-73 BOARD CN1803
(SEE PAGE 3-20)
S948
POWER
CN941
POWER(1)
ON
6
POWER(2)
5
5V OFF
4
GND
1
D941
POWER
LED
SW-328 BOARD