Symphonic ST413E, Руководство по обслуживанию

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2-5
Q571
Base
WF8
PIN 4
OF CN571
WF12
WF9
PIN 1
OF CN571
PIN 3
OF WH501A
WF10
PIN 7
OF IC551
WF11
Q572
Collector
WF7
WF1
PIN 2
OF IC31
WF6
PIN 9
OF IC31
WF2
PIN 14
OF IC111
PIN 8
OF TU1
WF16
Main CBA Bottom View
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
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.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
Because a hot chassis ground is present in the power
supply circuit, an isolation transformer must be used.
Also, in order to have the ability to increase the input
slowly,when troubleshooting this type power supply
circuit, a variable isolation transformer is required.
BL2300F01011-1