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Incredibly clear!!!! Well done, complete and wonderful. It could not better than this!!!!
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Thank You for fast delivery for the sheme.
Everything allright.
Thanks & best regards Franz
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again you did a very good job. It was fast too. Photocopy are really readable and clear
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Probably it never existed a 1081 official service manual from Commodore, it's look more like a NAPCEC service manual & diagrams compilation of the 1084 series and his variants, like the nap6523, 8cm505, 1084S, 1084P and obviously the 1081. It's more complete than other scans and the quality of the scans also are far superior. It has two circuit diagrams variants of the 1081, mono and stereo versions. It doesn't include a diagram for the Philips CM8500 or CM8501, they look like the 1081 but they are slightly different.
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Rapid, clear well done as all the scheme I downloaded from this site. Great job very functional and very useful
7-2. The voice of the caller cannot be heard in SP-PHONE MODE.
The 1kHz 40mV burst sine signal is applied to TEL-line of the base in SP-PHONE MODE. Can the 1kHz burst sine signal from pin 3 of T1 be fed? OK Check whether there is the 1kHz burst sine signal from pin 7 of IC5. OK Check whether there is the 1kHz burst sine signal from pin 6 and pin 20 of IC401. NG Check Q16, IC401 and their peropheral circuits. NG Check IC5 and its peropheral circuit. NG Check the base TEL line circuit and RELAY control circuit.
OK Check whether there is the 1kHz burst sine signal from pin 5 and pin 8 of IC402. OK Check J401, FC701, J752 D754, W701, W702 and SP701. NG Check IC402 and its peripheral circuit.
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