7-6
Power Supply Block Diagram
L5005BLP
F601
4A/125V
LINE
FILTER
L601
AC601
AC CORD
HOT COLD
T601
17
18
12
14
13
14
3 2
Q603
LIMIT
MAIN CBA
7
8
6
HOT CIRCUIT. BE CAREFUL.
LINE
FILTER
L602
INV+24V
CN111
D504
D542
Q534
Q533
Q535
BRIDGE
RECTIFIER
D601 - D604
Q601
SWITCHING
IC531
+2.5V REG
IC533
+1.8V REG
IC536
+5V REG
IC532
+1.2V REG
BRIDGE
RECTIFIER
D638 - D641
3
2
IC601
IC602
IC605
14
3 2
IC631
4
3
5
16
T631
7
12
11
8
3
5
6
1
9
Q536
Q504
Q503
Q537
SHUNT
REG
SHUNT
REG
10
SWITCHING
Q631
+3.3V 10
+1.2V
16-18
+5V 4
+33V 1
STBY+3.3V 2
+2.5V
12,13
+1.8V 19
IC537
+3.3V REG
IC535
+3.3V
REG
IC534
+5V REG
2
1
Q632
SWITCHING
CONTROL
TO
DIGITAL
MAIN CBA
UNIT
(CN1111)
PROTECT1
TO
SYSTEM
CONTROL
BLOCK
DIAGRAM
4A 125V
STBY+3.3V
SOFT-START FEED BACK
OUT
OVER VOLTAGE
PROTECT
1
2
5 7
+12V
Q501
+12V REG
Q502
P-ON-H
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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