Panasonic SA-AK520E Service Manual page 4

2. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C520 and C540 through a 10 , 5W
resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy
solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 230V, 50 Hz in NO SIGNAL mode (volume min at CD mode) should be
~350mA.
3. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
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