7-5
Power Supply Block Diagram
L3219BLP
4A/125V
F601
4A/125V
LINE
FILTER
L601
AC601
AC CORD
BRIDGE
RECTIFIER
D605 - D608
HOT COLD
T601
15
12
13
14
11
16
7
4
3
1
2
IC601
ERROR
VOLTAGE DET
Q601
Q603
SWITCHING
CONTROL
SWITCHING
MAIN CBA
5
3
2
PANEL+3.3V
46
PANEL+10.8V
55
PANEL+25V73
PANEL-6V82
VT+33V
Q511
Q513
IC533
+5V REG.
HOT CIRCUIT. BE CAREFUL.
LINE
FILTER
L602
AL+13V
Q509
Q505
Q510
Q512
CN101A
P-25V-ON21 3
AL+5V22 2
CN102A
Q502
Q501
IC671
+5V REG.
IC672
+5V REG.
REG+5V
REG+5V
IC531
+7V REG.
Q531
P-ON-H
9
10
AL+21V
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
TP401
+21V
Q633
CN101B
PANEL+3.3V
PANEL+10.8V
PANEL+25V
PANEL-6V
LCD MAIN CBA UNIT
P-25V-ON
AL+5V
CN102B
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
TO LCD
BACKLIGHT
BLOCK
DIAGRAM
CN103A CN103B
AL+7V(D)21 3
IC191
+3.3V
REG.
IC192
+1.5V
REG.
IC193
+3.3V
REG.
AL+3.3V(D)
AL+1.5V(D)
AL+3.3V(A)
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.
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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