Panasonic SA-AK44 Service Manual page 3

1. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C531, C532, C533, C534 and C579
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
should be ~400mA.
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
Power supply
For E & EG only
For EB only
Power consumption
Power consumption in standby mode
Dimensions (W x H x D)
Mass
SYSTEM
SC-AK44(E)
SC-AK44(EB)
SC-AK44(EG)
Notes:
1. Specifications are subject to change without notice. Mass and
dimensions are aproximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
3. The label "HIGH" and "LOW" on the rear of the speakers refer to High
frequency and Low frequency.
AC 230 V, 50Hz
AC 230 - 240 V, 50Hz
185 W
0.4 W
250 X 332 X 316mm
8.5 kg
Music Center: SA-AK44(E)
Speaker: SB-AK44(E)
Music Center: SA-AK44(EB)
Speaker: SB-AK44(E)
Music Center: SA-AK44(EG)
Speaker: SB-AK44(E)