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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
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IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
Reference frequency adjustment 1. In the adjustment mode, select channel 1 by rotating the main tuning dial.
2. Press the key to start transmission. 3. Rotate TC1 on the main board until the value on the frequency counter matches the one displayed on the LCD.
UHF high-power adjustment 1. In the adjustment mode, select channel 2 by rotating the main tuning dial.
2. Hold down the key to start transmission. 3. While watching the reading of the TX power meter, set the output power to the value closest to 4.5W by rotating the main tuning dial. 4. When the key is released, the output power at that time will be stored as the high power setting.
UHF low-power adjustment 1. In the adjustment mode, select channel 3 by rotating the main tuning dial.
2. Hold down the key to start transmission. 3. While watching the reading of the TX power meter, set the output power to the value closest to 0.8W by rotating the main tuning dial. 4. When the key is released, the output power at that time will be stored as the low power setting.
VHF high-power adjustment 1. In the adjustment mode, select channel 4 by rotating the main tuning dial.
2. Hold down the key to start transmission. 3. While watching the reading of the TX power meter, set the output power to the value closest to 4.5W by rotating the main tuning dial. 4. When the key is released, the output power at that time will be stored as the high power setting.
VHF low-power
1. In the adjustment mode, select channel 5 by rotating the main tuning dial. 2. Hold down the key to start transmission. 3. While watching the reading of the TX power meter, set the output power to the value closest to 0.8W by rotating the main tuning dial. 4. When the key is released, the output power at that time will be stored as the low power setting.
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