7-7
Power Supply Block Diagram
A8AF1BLP
HOT
HOT
COLD
POWER SUPPLY CBA
INVERTER CBA
HOT CIRCUIT. BE CAREFUL.
Q602
SWITCHING
CONTROL
14
3 2
IC603
T601
CN601
TO INVERTER
BLOCK DIAGRAM
CN1901
3
HOT-GND 3
ACL 1
2
1
LINE
FILTER
L1901
AC1901
AC CORD
LINE
FILTER
L1902
BRIDGE
RECTIFIER
ACL
HOT-GND
D1901 - D1904
5
11
14
12
17
18
13
16
15
19
9
7
8
FEED
BACK
Q601
SWITCHING
Q631
CN301 CN3601
Q632,Q634
SWITCHING
Q646
SW-6.8V
Q502
Q645,D648
SW+13V
Q650
IC637
+3.3V
REG.
23
JS651
Q633
Q639,Q671
JS652
Q637
SW+5V
Q801
SW+9V
Q638,D634
SW+3.3V
4A/125V
F1901
4A/125V
P-ON-H1
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
P-ON-H2
RESET
+5V REG.
PROTECT2
PROTECT1
SWITCHING
+40V
P-ON+5V
AL+3.3V
AL+13V
P-ON+9V
TO AUDIO-2
BLOCK
DIAGRAM
RESET
Q501
LCD-6.8V8
P-ON+3.3V
14,15
LCD+3.3V10
+3.0V(1)
18,19
+3.0V16
LCD+24.5V6
LCD+13V7
AL+3.3V12
P-ON+5V20
16
9,10
14
5,6
8
18
17
12
4
LCD+13V
LCD+24.5V
LCD-6.8V
LCD+3.3V
AL+3.3V
P-ON+2.0V
+2.0V REG.
IC3302
+1.8V
+1.8V REG.
IC3601
+1.1V
+1.1V REG.
IC3603
P-ON+5V
DIGITAL MAIN CBA UNIT
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1901) 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 4 A, 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.
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