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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.
WF4
PIN 32
OF IC1401
WF2
PIN 49
OF IC1401
WF8
PIN 9
OF IC1401
WF7
PIN 10
OF IC1401
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.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1601) 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.
WF15
PIN 58
OF IC1201
WF16
PIN 59
OF IC1201
| BT1200F01013 |
