9-5
5. Power Supply Block Diagram
COLD
1
4
3
2
L601
CN601
D601- D604
Q601
SWITCHING
D607
D605
4A 250V
F601
4A/250V
Q653
P-ON-H2
P-ON+21V
AMP+13V
P-ON+13V
W
B
IC602
A
C601
A
C
CORD
LINE
FIL
TER
BRIDGE
RECTIFIER
HO
T
PO
WER SUPPL
Y CB
A
TO
SYSTEM CONTR
OL
BLOCKDIA
GRAM
HO
T CIRCUIT
. BE CAREFUL.
T601
12
11
10
9
8
7
6
3
5
2
1
VLED
ILED
TO
LED BA
CKLIGHT DRIVE
BLOCK DIA
GRAM
DIGIT
AL MAIN CB
A UNIT
CN3601
P-ON+21V
1-3
P-ON+13V
7-9
19-21
25-27
22-24
CN651
AMP+13V
4-6
P-ON+13V
FB
IC601
2
IS
3
OUT
5
VCC
6
VH
8
SWITCHING
CONTR
OL
IC661
AUDIO SIGNAL
1
4
3
2
CN652
2
SP(R)-
1
SP(R)+
SP652
SPEAKER
R-CH
IC1603
(ISOLA
T
OR)
Q603
Q604
IC604
SHUNT
REGULA
T
O
R
SHUNT
REGULA
T
O
R
ERR
O
R
V
O
LT
A
GE DET
IC660
SHUNT
REGULA
T
O
R
Q660
RESET
RESET
SP(R)-
SP(R)+
TO
SYSTEM CONTR
OL
BLOCKDIA
GRAM
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
For continued protection against risk of fire,
replace only with same type 4A, 250V fuse.
CAUTION ! :
ATTENTION :
Utiliser un fusible de rechange de même type de 4A, 250V.
4A 250V
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
PL22.06BLP