7-7
Power Supply Block Diagram
A71F3BLP
HO
T
HO
T
COLD
PO
WER SUPPL
Y CB
A
INVER
TER CB
A
HOT CIRCUIT. BE CAREFUL.
T
O
DIGIT
AL
MAIN CBA UNIT
(CN3010)
Q602
SWITCHING
CONTR
OL
1
4
3
2
IC603
IC637
T601
CN601
T
O
INVER
TER
BLOCK DIA
GRAM
CN501
4
+3.3V
REG
HO
T
-GND
3
AC
L
1
3
1
P-ON+9V
8
P-ON+5V
6,7
+2.5V
14
+4V
10-12
+15V
18
+2.5V
16
AL+3.3V
4
+5V/+12V
-LCD
2,3
+35V
20
F501
4A/125V
LINE
FIL
TER
L503
A
C501
A
C
CORD
LINE
FIL
TER
L502
BRIDGE
RECTIFIER
AC
L
HO
T
-GND
D502 - D505
4A 125V
2
16
15
10
14
9
13
12
11
7
6
SHUNT
REG
Q601
SWITCHING
Q801
AMP+13V
P-ON+9V
P-ON-H
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
AL+3.3V
CN301
+9V REG
Q639,Q640
Q641
Q638
Q637
Q644
JS632
Q635
Q633
JS661
Q636
SW +13V
Q632
Q631
Q643
2
3
JS612
Q650,Q651
Q652
SW +5V
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F501) 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 m
ê
me type de 4A, 125V.
4A/125V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
Summary of Contents for LC320EM8
Page 37: ...8 8 A71F3SCIR IR Sensor Schematic Diagram ...
Page 38: ...8 9 A71F3SCD1 Digital Main 1 9 Schematic Diagram ...
Page 43: ...8 14 Digital Main 6 9 Schematic Diagram A71F3SCD6 ...
Page 44: ...8 15 Digital Main 7 9 Schematic Diagram A71F3SCD7 ...
Page 45: ...8 16 Digital Main 8 9 Schematic Diagram A71F3SCD8 ...
Page 46: ...8 17 Digital Main 9 9 Schematic Diagram A71F3SCD9 ...
Page 51: ...8 22 Jack CBA Top View BA71F0F01021 4 ...
Page 53: ...8 24 Function CBA Top View Function CBA Bottom View BA71F0F01021 2 ...
