1 Before Repairs
1. Turn off the power supply. Using a 10 Ω, 10 W resistor, connect both ends of power supply capacitors (C730,
C750) in order to discharge the voltage.
2. Before turning the power supply on, after completion of repair, slowly apply the primary voltage by using a
power supply voltage controller to make sure that the consumed current at 50 Hz in NO SIGNAL mode should
be shown below with respectto supply voltage 230/240 V.
Power supply voltage
AC 230 V
AC 240 V
Consumed current 50 Hz 80 - 270 mA 75 - 265 mA
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