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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
Summary of Contents for SA-XR57E
Page 5: ...1 2 Caution for AC Cord 5 SA XR57E SA XR57EB SA XR57EG ...
Page 11: ...5 3 Home Theater connections 11 SA XR57E SA XR57EB SA XR57EG ...
Page 12: ...12 SA XR57E SA XR57EB SA XR57EG ...
Page 13: ...13 SA XR57E SA XR57EB SA XR57EG ...
Page 14: ...14 SA XR57E SA XR57EB SA XR57EG ...
Page 15: ...15 SA XR57E SA XR57EB SA XR57EG ...
Page 16: ...16 SA XR57E SA XR57EB SA XR57EG ...
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Page 18: ...18 SA XR57E SA XR57EB SA XR57EG ...
Page 19: ...5 4 Connecting other equipment 19 SA XR57E SA XR57EB SA XR57EG ...
Page 30: ...8 3 Main Parts Location Diagram 30 SA XR57E SA XR57EB SA XR57EG ...
Page 60: ...SA XR57E SA XR57EB SA XR57EG 60 ...
Page 70: ...70 SA XR57E SA XR57EB SA XR57EG ...
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Page 111: ...17 Exploded Views 17 1 Cabinet Parts Location SA XR57E SA XR57EB SA XR57EG 111 ...
Page 112: ...SA XR57E SA XR57EB SA XR57EG 112 ...
Page 113: ...17 2 Packaging SA XR57E SA XR57EB SA XR57EG 113 ...
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