3 Before Repair and Adjustment
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Disconnect AC power, discharge Power Supply Capacitors C546, C547, C548, C549 through a 10
Ω
,
1 W 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, 50Hz in NO SIGNAL mode should be ~400 mA (E).
Current consumption at AC 230~240V, 50Hz in NO SIGNAL mode should be ~400 mA (EB).
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Summary of Contents for SB-WA330E
Page 18: ...Step 9 Remove all the screws Step 10 Remove the Speaker ...
Page 19: ...Step 11 12 Remove all the screws ...
Page 21: ...Step 17 Place the Power PCB as shown for checking ...
Page 22: ...Checking for AC Inlet PCB TOP PREVIOUS NEXT ...
Page 24: ...6 2 1 Replacement of the Power IC TOP PREVIOUS NEXT Step 1 2 Remove all the screws ...
Page 25: ...Step 3 Desolder the Power IC terminal and replace the component TOP PREVIOUS NEXT ...
Page 26: ...7 Connection of the Speaker Wiring TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 27: ...8 Block Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 29: ...10 Printed Circuit Board TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 30: ...11 Wiring Connection Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 31: ...12 Illustration of IC s Transistors and Diodes TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 35: ...13 1 1 Cabinet Parts Location TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 47: ...13 4 Packaging TOP PREVIOUS TOP PREVIOUS ...
Page 48: ......
Page 49: ......
