AD9907181C2
Stereo Integrated Amplifier
SU-A808
Colour
(K)...............Black Type
Areas
(E)...............Europe and Russia.
(EB)............Great Britain.
(EG)............Germany, France and Italy.
SPECIFICATIONS
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1999 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
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NOTATION PUBLIC "-//ALDUS//NOTATION TAGGED IMAGE FILE FORMAT//EN"
ENTITY SYSTEM "C:\WINDOWS\
\AD_SGML\F9907-3\sea909se\technics.tif"
1. Before Repair
1. Turn off the power supply. Using a 10
, 10 W resistor, connect
both ends of power supply capacitors (C701, C702) 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 respect to supply
voltage 230/240 V.
Power supply
voltage
AC 230 V, 50 Hz AC 240 V, 50 Hz
Consumed
current
70-270 mA
60-260 mA
2. Protection Circuitry
The protection circuitry may have operated if either of the following conditions is noticed:
- No sound is heard when the power is switched ON.
- Sound stops during a performance.
The functions 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 this unit are used.
If this occurs, follow the procedure outlined bellow:
1. Switch OFF the power.
2. Determine the cause of the problem and correct it.
3. Switch ON the power once again.
Note:
When the protection circuitry functions, the unit will not operate
unless the power is first switched OFF and ON again.
3. Accessories
- AC mains lead
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