9-10
5. Power Supply Block Diagram
PL12.2BBLP
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.
For continued protection against risk of fire,
replace only with same type 4A, 125V fuse.
CAUTION ! :
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
4A 125V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
HOT COLD
POWER SUPPLY CBA
HOT CIRCUIT. BE CAREFUL.
Q602
SWITCHING
CONTROL
1
4
3
2
T601
6
LINE
FILTER
L601
CN601
BRIDGE
RECTIFIER
D601- D604
4
5
12
11
10
9
8
7
1
Q601
SWITCHING
CN631
Q656
Q653
AC601
AC CORD
LINE
FILTER
L602
4A 125V
F601
4A/125V
Q501
SWITCHING
Q652
TO
SYSTEM CONTROL
BLOCKDIAGRAM
P-ON-H2
RESET
+3.3V REG.
Q650
RESET
P-ON+21V
11
P-ON+21V
AMP+24V
AL+3.3V
DIGITAL MAIN CBA UNIT
22,23
16,17
P-ON+21V22,23
P-ON+21V16,17
13,14
AMP+24V13,14
AL+3.3V11
CN3601
1
2
ERROR
VOLTAGE DET
IC601
2
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