General
Power supply AC 220 V, 60 Hz
Power consumption 54 W
Power consumption in standby
mode
0.7 W
Dimensions (WxHxD) 180 x 241 x 318 mm
Mass 4.6 kg
Notes :
1. Specifications are subject to change without notices. Mass and
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
System: SC-PM25 (GD)
Music Center: SA-PM25 (GD)
Speaker: SB-PM25 (EG)
1. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C512 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 220V, 60 Hz in NO SIGNAL mode
should be ~150mA.
2. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
- No sound is heard when the power is turned on.
- Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and
negative speaker connection wires are "shorted", or if speaker systems with an impedance less
than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
3
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