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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.
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GOOD SERVICE MANUAL.I ALWAYS BUY THERE IF I FIND WHAT I AM LOKING
5-8 Alert Tone
Abnormal Alert tone
Is there alert wave form on the R305 during alert tone test?
No
ALERT by Test S/W
Yes
No
Is there alert wave form on the Q300 pin 3 during alert tone test? Check the circuit related to Q300
Yes
No
U470 pin 5 3.3V? Check the circuit related to U470
Yes
No
Buzzer is ok? Change the Buzzer
Yes
END
5-14
SGH-N500 Flow Chart of Troubleshooting and Circuit Diagrams
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