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1.3. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C707, C717, C718 and C924 through a 10
Ω
, 1W 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 230 to 240V, 50 Hz in NO SIGNAL mode (volume min) should be 200 ~ 600 mA.
1.4. 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.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
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SA-XR57E / SA-XR57EB / SA-XR57EG
Содержание SA-XR57E
Страница 5: ...1 2 Caution for AC Cord 5 SA XR57E SA XR57EB SA XR57EG ...
Страница 11: ...5 3 Home Theater connections 11 SA XR57E SA XR57EB SA XR57EG ...
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Страница 19: ...5 4 Connecting other equipment 19 SA XR57E SA XR57EB SA XR57EG ...
Страница 25: ...7 2 Advanced Digital Pictures 7 3 Advanced Digital Sound 7 4 Easy to Use 25 SA XR57E SA XR57EB SA XR57EG ...
Страница 30: ...8 3 Main Parts Location Diagram 30 SA XR57E SA XR57EB SA XR57EG ...
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Страница 111: ...17 Exploded Views 17 1 Cabinet Parts Location SA XR57E SA XR57EB SA XR57EG 111 ...
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Страница 113: ...17 2 Packaging SA XR57E SA XR57EB SA XR57EG 113 ...
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