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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
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Great copy of the manual, has all information required for servicing,
TROUBLESHOOTING GUIDE
THE AUDIO CAN NOT RECORD
IS BIAS LEVEL AT T4001 OK ? YES
NO
IS THE VOLTAGE OF T4001 AT PIN 2 5V ? YES
NO
CHECK POWER BLOCK.
IS THERE AUDIO SIGNAL AT PIN 5 OF T4001 ? NO
YES
CHECK A/C HEAD AND CIRCUIT AROUND OF IC4001.
CHECK SNAPPING OF A WIRE IN T4001 AND CIRCUIT AROUND IT.
IS THERE AUDIO SIGNAL AT PIN 80 OF IC4001 ? YES
NO
CHECK THE CIRCUIT FROM TUNER AND AUDIO INPUT JACK TO PIN 80 OF IC4001.
IS THERE AUDIO SIGNAL AT PIN 97 OF IC4001 ? YES
NO CHANGE IC4001.
IS THERE AUDIO SIGNAL AT PIN 5 OF T4001 ? YES
NO CHANGE IC4001.
CHECK LEAD WIRE OF A/C HEAD AND CONNECTOR.
E-19
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