Block Diagram - Power Section - Sony HCD-DZ20 Service Manual

HCD-DZ20
Q Q
6-5. BLOCK DIAGRAM – POWER SECTION –
3 7 6 3 1 5 1 5 0
DC/DC
CONVERTER
T801
F1
F2
TO FLUORESCENT
RECT
INDICATOR TUBE
VFL
D801,802
D804,805
T E
L 1 3 9 4 2 2 9 6 5 1 3
IC501 (4/4)
SYSTEM CONTROLLER
P CONT2 40
P CONT1 39
AC_CUT 20
RESET 12
P CONT3 41
w w w
HCD-DZ20
+21.7V
+5V
OSC
Q801
SW+5V
Q502, 503
IC1105
+3.3V SW +5V
+3.3V REG
SWITCH
IC1107
RF +3.3V
+3.3V REG
Q506 IC511
E 4V
SWITCH RESET
x a o
y
. i
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8
T901
TRANSFORMER(MAIN)
D931
IC931
VOLTAGE
DETECT
PC901
PHOTO
COUPLER
E4V
Q943,947
PC903
VOLTAGE
PHOTO
DETECT
COUPLER
+12V
IC515 IC941
A9V
+9V REG +12V REG
M +9V
Q945
IC516
A5V MOTOR DRIVE
+5V REG
CONTROLLER
Q Q
+12V
3 7 6 3
IC502 IC942
FL +3.3V
+3.3V REG +5V REG
E 4V
+5V
IC1109 IC943
+1.8V
+1.8V REG +3.3V REG
IC3050
+1.8V
VOLTAGE
+1.8V REG
SW3.3V
u 1 6 3
.
30 30
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2 4
9 9
IC901
D905
Q901 SWITCHING
VOLTAGE REGULATOR
CONTROLLER
T902
TRANSFORMER (SUB)
D941
IC921
Q921
D922
SWITCHING
REG
REGULATOR
D944
1 5 1 5 0 8 9 2
D942
D943
IC951
DETECT
PC902
PHOTO
COUPLER
m
c o
2
8 9 9
D901
AC IN
4 9 8 2 9 9