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Power Supply Block Diagram
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 DC plug to the DC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
8A 125V
JK601
F601
DC-JACK
8A/125V
DC IN
6-7
CAUTION:
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE 8 A, 125V FUSE.
8A 125V
ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE 8A, 125V.
Q621
SW
IC691
+5V REG.
Q691
Q601, 602
SW
OVER
VOLTAGE
Q603
PROTECT
Q612
Q661
+5V REG.
Q672
+5V REG.
MAIN CBA
Q671
SW
Q611
NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
P-ON+12V
Q681-684
STEP-UP
P-ON+33V
PWM1
FROM
SYSTEM CONTROL
P-ON-H
BLOCK DIAGRAM
POWER CONTROL
P-ON+5V
IC651
+1.8V REG.
D+1.8V
Q641
+3.3V REG.
A+3.3V
Q631
+3.3V REG.
D+3.3V
BACK-UP +5V(M)
BACK-UP +5V(A)
Q651
+3.3V REG.
BACK-UP +3.3V(A)
6-8
L0110BLP
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