Sharp CD-K491W - Schematic Diagram - Part 19; Power Supply Regulation Schematic

CD-K491W
– 40 –
A
B
C
D
E
F
G
H
1
23456
Figure 40 SCHEMATIC DIAGRAM (19/20)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
D904
1N4004S
D991
KBU1003
Q908
KTC3199 GR
Q909
2SD2012
C919
4700/25
Q905
KTC3199 GR
C908
47/25
R909
1K
R908 33K
Q906
2SD2012
C910
47/25
R911
560
D901
1SS133
C907 220/25
ZD903 MTZJ13C
R902
1K
C903
47/25
C904
47/25
C905 47/25
ZD904
MTZJ8.2C
D905
1SS133
Q9
KTC31
9
Q911
2SD2012
C914
100/25
D906
1SS133
R903
47
R910
150
R912
47
R914
47
Q907
KRA102 M
SWITCHING
R917
4.7K
Q914 KRC107 M
C902
47/25
R901
47(1W)
R918
100
C920
47/25
Q913
2SB1375
ZD901
MTZJ13A
C906
0.022
C901
0.022
C911
0.022
C915 0.022
C909
0.022
R907
560
F999
T500mA L 250V
R921
100(1W)
+7.3V(CD)
+12V(A)
+12V(M)
+4.6V(D)
GND(D)
GND(M)
+5V(AC3)
+VCC –VCC –VCC +VCC
CD GND(D)
GND
GND –VCC –VCC GND GND GND +VCC +VCC GND GND
–B
+B
+B
+B
VOLTAGE
REGULATOR
Q903
2SD468 C
R904
1.5K
ZD902
MTZJ5.6A
R906
100
R905
22(1/4W)
Fusible
VOLTAGE
REGULATOR
Q902
2SD2012
VOLTAGE
REGULATOR
Q901
KTC3199 GR
1
23
–B
+B
–B
–B
+B
+B
–B
–B
+B
–B
+B
BI903
BI904
CNS904
CNS903
CNPX12
TO SPEAKER
AMP.1 PWB
P39 7-H
TO SPEAKER
AMP.2 PWB
P39 7-D
CNPV12
+B
Q910,Q911:VOLTAGE RE
G
BI902
TO MAIN PWB
P29 12-F
CNS902
GND(D4)
GND(D3)
+5V(AC32A)
VGND
CNPP02
+B
Q904
KRA107 M
SWITCHING
Q905,Q906:VOLTAGE REGULATOR
1
23
CD GND(D)
Q908,Q909:
VOLTAGE REGULATOR
1
2
3
+B
BI901
CNS901
POWER
CD GND(D2)
CD GND(D1)
+4.6V(D)
GND(M)
+12V(M)
+12V(A)
–12V(A)
GND(A)
GND(D)
+7.3V(CD)
TO MAIN PWB
P29 12-E
CNPP01
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