Здравейте. Много харесвам CD плейърите на Philips от ранните им години. Наскоро взех cd 200, philips/sony. За съжаление с дефектен демодулатор saa 7011, открит чрез замяна с работещ, взет от CD303. Имам няколко работни saa7010 бр. Не мога да намеря saa7011. Въпросът ми е има ли успешна смяна и на двете ИС? Тук има тема от 2009 г., но съветите, дадени там, не работят, опитах. Съжалявам за гугъл преводача. Поздравления
Hello,
It is best to find the circuit diagram of a Philips CD player that has SAA7010, and do the necessary changes in your CD-200. Most likely around the pins 7, 8, 9, 10, 11. Cut traces, add components, whatever is needed.
It is best to find the circuit diagram of a Philips CD player that has SAA7010, and do the necessary changes in your CD-200. Most likely around the pins 7, 8, 9, 10, 11. Cut traces, add components, whatever is needed.
Looking at the cd303 service documentation, where both options are given, everything around these pins is the same. A small difference is around pin 16, 17, 18. I will make the changes, two 22nF capacitors instead of parallel to R8.2 M, move them in series. There are no other differences in the scheme.
Hm, strange. I have the Marantz CD74 circuit diagram with SAA7011, and I checked the Philips CD-104 with SAA7010. The big difference is at pin 8 (feedback). There is a 4.7k resistor between pin 10 and pin 8, and no capacitor from pin 8 to GND. Also there is some initial reset circuit going to pin 11.
https://elektrotanya.com/philips_cd303_sm_de_full.pdf/download.html
The SAA7011 version is on page 55
The SAA7010 version is on page 63
You have to compare the components and do the changes accordingly.
The SAA7011 version is on page 55
The SAA7010 version is on page 63
You have to compare the components and do the changes accordingly.
To my delight I found the original and it solved my problem. Thanks everyone for the replies. Especially Bram Jacobs
