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7-7
A8CN1BLP
Power Supply Block Diagram
LINE
FIL
TER
L601
A
C601
A
C
CORD
BRIDGE
RECTIFIER
D611,D613,
D614,D616
HO
T
COLD
T601
11
15
12
13
18
19
5
MAIN CB
A
HOT CIRCUIT. BE CAREFUL.
3
7
8
14
17
IC601
F601
T4A H 250V
Q600
Q601
P-ON-H1
P-ON-H2
PR
O
TECT
-1
PR
O
TECT
-2
RESET
T
O
SYSTEM
CONTR
OL
BLOCK
DIA
GRAM
16
Q907
IC900
+5V REG.
Q902,D920
SW+3.3V
Q901,D916
+3.3V REG.
Q920
RESET
Q922,D936
SW+13V
Q906,D926
+9V REG.
Q904
Q911,Q912
SW+25V
Q900
Q903
SWITCHING
SWITCHING
CONTR
OL
FEED
BA
CK
1
4
3
2
Q936,D985
+5V REG.
AL+12V
P-ON+9V
AL+3.3V
VT+33V
P-ON+5V
P-ON+3.3V
+35V
1
FEEDBA
CK
2
INV+22V
3,4
CN105A
CN104A
CN3601
CN101A
CN3701
CN102A
CN4503
LCD+24.5V
8
18
AL+3.3V
3
23
P-ON+5V
1,2
24,25
LCD+3.3V
12
14
P-ON+9V
14
12
LCD-6.8V
10
16
LCD+13V
5-7
19-21
P-ON+3.3V
15-17
9-11
+3.5V
22-24
2-4
+3.0V
18,19
7,8
Q908
SW
-6.8V
IC902
+3.3V REG.
1
2
4
LCD+24.5V
LCD-6.8V
LCD+13V
P-ON+3.3V
+3.5V
+3.0V
LCD+3.3V
AL+3.3V
P-ON+5V
P-ON+9V
DIGIT
AL MAIN CB
A UNIT
TO
INVER
TER
BLOCK
DIA
GRAM
(CL403)
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
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.
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