9-5
5. Power Supply Block Diagram
HO
T
COLD
HOT CIRCUIT. BE CAREFUL.
Q602
SWITCHING
CONTR
OL
Q621
OV
E
R
VO
LT
A
G
E
PR
O
TECT
1
4
3
2
T601
6
LINE
FIL
TER
L601
CN601
BRIDGE
RECTIFIER
D601- D604
4
5
12
11
10
9
8
7
1
Q601
SWITCHING
AC
6
0
1
A
C
CORD
2.5A 250V
F602
2.5A/250V
Q653
TO
SYSTEM CONTR
OL
BLOCKDIA
GRAM
P-ON-H2
RESET
Q650
RESET
Q656, Q658
+3.3V REG.
P-ON+21V
AMP+13V
W
B
ERROR
VOLTAGE DET
IC602
2
PO
WER SUPPL
Y
CB
A
CN501
8
P-ON+21V
AMP+13V
AL+3.3V
DIGIT
AL MAIN CB
A UNIT
20-23
P-ON+21V
1-4
15-18
AMP+13V
6-9
AL+3.3V
16
CN3601
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) 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 2.5A, 250V fuse.
CAUTION ! :
ATTENTION :
Utiliser un fusible de rechange de même type de 2.5A, 250V.
2.5A 250V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
PL14.12BLP