Symphonic ST413E, Руководство по обслуживанию

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2-3
Main 2/3 Schematic Diagram
L2200XSCM2
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 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.
MAIN 2/3
Ref No. Position
IC31
I-3
IC601
I-1
Q31 H-4
Q601 J-2
Q602 J-1
Q662
I-1
Q671
H-2
Q675
H-1
Q676 H-1
Q681 G-2
Q682 G-1
Q683
G-1
CN691 K-2
VR661 H-1
TRANSISTORS
ICS
CONNECTOR
VARIABLE RESISTOR
*
1 NOTE:
These components (C643, C642, JS642)
can be used in any models.
However, you cannot mix components under
Group A with the ones under Group B.
You can choose either Group. The difference
between Group A and Group B is shown below.
C643
C642
4700P/250V 0.01/250V
0.01/250V
Not Used
Not Used
WIRE JS642
Group A Group B