Power Supply (1/2) Block Diagram - Panasonic SC-HC37GN Service Manual

12.5. POWER SUPPLY (1/2) BLOCK DIAGRAM

IC1700
C0DACYY00012
SWITCHING
REGULATOR
FB/OLP 4
VCC 2
S/OCP 1
D 5
D 6
D 7
D 8
P1751
AC INLET L1702
1 2
F1 TH1701
Z1752
4 3
SMPS P.C.B.
IC1701
C0DBZMC00006
SHUNT
REGULATOR
PC1701
QR1700,Q1700,Q1701
FEEDBACK
BURST SW P1700
3 2
1
FEEDBACK
CIRCUIT
P1700
PCONT
4 1
2
T1700
MAIN
TRANSFORMER
D1708 D1700
P1700
18V
6 7
5
P1700
18V
8
5 7
9
3 10
11
12
2
D1703
D1701
1
PRIMARY SECONDARY
CN1100 BURST SW
1
CN1100
PCONT
2
D1112 D1113
IC1100
C0DBAYY01462
+5V SWITCHING
VOLTAGE
REGULATOR
CN1100
18V 18V 5V
2 VIN
SW(VOUT) 3
5
CN1100
18V BOOT 1
7
7 EN FB 5
IC1101
C0DBAYY01462
+9V SWITCHING
VOLTAGE
REGULATOR
18V 9V
2 VIN
SW(VOUT) 3
BOOT 1
7 EN FB 5
IC1102
C0DBEYY00146
+3.3V VOLTAGE
REGULATOR
18V PW STBY3R3V PW STBY3R3V
3 VIN VOUT 1
18V
5 CE
ADJ 4
Q404
+18V POWER SUPPLY
18V PW DAMP18V
1 S D 5
18V
QR400
2 S D 6
18V
3 S D 7
SWITCH 4 G D 8
QR401
SWITCH
97
MAIN P.C.B.
STBY CTRL
STBY CTRL
PCONT
PCONT
QR1100
DC DETECT
IC1103
C0DBGYY01843
IC401
+3.3V VOLTAGE
C0CBCAC00358
REGULATOR
+1.8V VOLTAGE
REGULATOR
5V
4 VIN
PW 3R3V PW 3R3V
VOUT 5 5 IN PW 1R8V PW 1R8V
1.8V
OUT 4
1 ON/OFF
3 CE
PW 3R3V
3.3V
D1104,D1105
PW STBY3R3V
3.3V
IC6003
C0EBY0000861
RESET
NRST NRST
2 IN OUT 1 NRST
M VDET
M VDET
PW DAMP18V
18V
SMPS CUT
SMPS CUT
SC-HC37GN/GS/GSX/PU POWER SUPPLY (1/2) BLOCK DIAGRAM
FROM
SERVO & SYSTEM CONTROL
5V,PW USB5V,PW iPod5V
5
PW 3R3V
3
TO POWER SUPPLY
BLOCK (2/2)
9V
1
7.5V
2
PW STBY3R3V
4
TO
SERVO & SYSTEM CONTROL
FROM
SERVO & SYSTEM CONTROL