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Main 3/4 Schematic 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 AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
CAUTION ! :
For continued protection against risk of fire,
replace only with same type 4 A, 125V fuse.
4A/125V
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
8-5
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
MAIN 3/4
Ref No.
Position
ICS
P-3
IC31
IC601
O-1
TRANSISTORS
Q601
P-2
P-1
Q602
Q631
O-1
Q652
O-1
Q672
N-2
Q673
N-1
Q674
N-1
M-2
Q681
Q682
M-1
O-2
Q696
CONNECTOR
CN691
Q-2
TEST POINT
TP300
N-4
VARIABLE RESISTOR
VR661
O-1
1 NOTE:
*
The Capacitor ( C643 ) is either type A or type B.
These two types are exchangeable and can be
equally used whichever the model is . The difference
between type A and type B is shown in the table below.
C643
C642
JS642
Type A
0.01/250V
Not Used
0.01/250V
Type B
4700P/250V
Not Used
WIRE
L3300SCM3
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