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L6650BLP
6-9 6-10
Power Supply Block Diagram
4A/125V
F601
4A/125V
LINE
FILTER
L601
AC601
AC CORD
DEGAUSSING
COIL
L691
CN691
PS691
BRIDGE
RECTIFIER
D605 - D608
HOT COLD
T601
6
4
2
1 13
14
12
11
9
4
3
IC601
ERROR
VOLTAGE DET
Q601
Q602
LIMITER
SWITCHING
Q652
VR661
+B ADJ
Q673
SWITCHING
CONTROL
Q672
Q681
Q696
RL601
+8V
SWITCHING
MAIN CBA
+B
DEF +B
+5V CTRL2
(FROM PIN 18 OF IC333)
P-ON+8V
DG-ON-H
(FROM PIN74 OF IC333)
+8V CTRL
(FROM PIN40 OF IC333)
AL+33V
P-ON+5V
AL+12V
P-ON+12V
Q111
NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
+B
TP601
10
SWITCHING
Q831
PROTECT-2
(TO PIN 67 OF IC333)
BACK-UP
PROTECT-1
(TO PIN68 OF IC333)
Q682
P-ON+5V
+5V CTRL
(FROM PIN28 OF IC333)
Q683
+5V
SWITCHING
+5V
SWITCHING
+5V
SWITCHING
AL+9V
Q321
+9V
SWITCHING
Q674
SWITCHING
P-ON-ON
P-ON-H
(FROM PIN79 OF IC333)
Q832
SWITCHING
P-ON-ON
SWITCHING
P-ON-ON
HOT CIRCUIT. BE CAREFUL.
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
1
2
FEED
BACK
Q841
(SWITCHING)
SWITCHING
P-ON-ON
Q191
Q851
+9V
REGULATOR
Q961
+5V
REGULATOR
SWITCHING
DG-ON-ON
P-ON+5V
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.