9-6
A03P0BLP
Power Supply Block Diagram
HO
T
COLD
PO
WER SUPPL
Y CB
A
HOT CIRCUIT. BE CAREFUL.
1
4
3
2
IC607
T601
TO INVER
TER
PO
WER BLOCK
DIA
GRAM
(CN1810)
CN610
H.V
.(BLA
CK)
1
1
2
HO
T+15V(RED)
4
H.V
.(BLA
CK)
1
LINE
FIL
TER
L601A, L602A
BRIDGE
RECTIFIER
D609- D612
TO INVER
TER
PO
WER BLOCK
DIA
GRAM
(CN1801)
FEED
BA
CK
FEED
BA
CK
Q621
SWITCHING
Q512, Q522
CN402
CN452
CN3701
CN3711
Q504, Q505
SWITCHING
Q516
Q513
Q514
Q623
Q511
Q508
Q518
SW+5V
Q521
Q517
SW+9V
Q501
SW+12V
Q510,D526
SW+3.3V
SW+3.3V
LINE
FIL
TER
T602
F601 T4A H 250V
P-ON-H1
TO
S
Y
S
T
E
M
CONTR
OL
BLOCK DIA
GRAM
P-ON-H2
PROTECT1
Q520
P-ON+5V
AL+3.3V
AL+13V
P-ON+9V
13,14
6
10
27-29
LCD+12V
P-ON+9V
AL+3.3V(1)
AL+5V
AL+3.3V
P-ON+3.3V
P-ON+5V
DIGIT
AL MAIN CB
A UNIT
P-ON+3.3V
13,14
P-ON+9V
6
2,3
LCD+12V
3,4
AL+3.3V
10
24,26
19-21
AL+5V
24,26
AL+3.3V(1)
19-21
P-ON+5V
27-29
CN600
CN601
4
2
3
15
9
13
12
14
11
10
16
8
6
7
8
IC621
SWITCHING
CONTROL
VH
1
ZCD
5
OUT
2
FB
3
IS
6
VCC
Q622
SWITCHING
A
C CORD
A
C
INLET
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
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.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
