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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
IC, TA1275AZ Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Pin Name
Y OUT DL-MODE R-Y.OUT R-Y.CONT B-Y.OUT B-Y.CONT ID-FIL R-Y.IN VCC B-Y.IN GND F0-FIL C-IN BELL-FIL Y-IN BELLCONT SCP-IN VCC 4.43 CW ID SW SYSTEM
I/O
O O The output pin for Y signal.
Description
The pin for controlling the Y processing mode: to VCC: 5.5MHz trap ; open: 5.5MHz trap + D.L ; to GND: DL. (Not used)
O I O I I I � I � I I I I I I � I I
The output pin for demodulated R-Y signal. The pin for controlling the black offset level. (Not used) The output pin for demodulated B-Y signal. The pin for controlling the black offset level. (Not used) The pin for connecting the SECAM ident filter capacitor. The input pin for external R-Y signal. (Not used) The VCC pin for Y/C processing block. The input pin for external B-Y signal. (Not used) The GND pin. The pin for connecting a capacitor for automatic adjusting circuit. The chroma signal input pin. The pin for connecting a capacitor for the bell filter, fo 4.286MHz. The Y signal input pin. The pin for selecting the bell filter fo. fo + 70KHz: open ; fo + 35KHz:20k to GND ; fo: to GND. The pin to input the sand castle pulse, SCP. VCC pin for logic block. The pin for input 4.43MHz of carrier wave for self adjustment circuit. The switch pin for selecting the ID detection mode. H + V: connected to VCC ; Auto search: opened ; H: connected to GND. (Not used.)
I/O
The interface pin to the main processor.
� 26 �
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