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Service Manual
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AD9908187C2
DAB Tuner
- ST-GT1000
Colour
(K)..........Black Type
Areas
(EB).......Great Britain.
(EG).......Europe.
1999 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
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1 Before Repair
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1. Turn off the power supply. Using a 10
, 10 W resistor, connect both ends of power supply
capacitors (C822, C833) 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.
Powersupplyvoltage
AC230V,50Hz
AC240V,50Hz
Consumedcurrent
20-60mA
20-60mA
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2 Protection Circuitry
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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.
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3 Accessories
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- AC mains lead
(EB) area : (RJA0053-2X)......................1 pc.
(EG) area : (RJA0019-2K).................... 1 pc.
- AM loop antenna
(RSA0022-J)..........................................1 pc.
- FM indoor antenna
(RSA0007).............................................1 pc.
- DAB T antenna
(RSA0028).............................................1 pc.
- Stereo phono cable
(RJL4P004B08)......................................1 pc.
- DAB antenna plug adaptor
(RFE0014).............................................1 pc.
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