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As Always you can find here manuals even of difficult TV scheme which are scan in almost perfect way.clear and fast!!!!!
Great work thanks!
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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.
No SW_12VG
YES
No SW_FD(+)
YES
Is the VCC (14V) supplied to Q165 Collector?
YES
NO
Check D124 on SMPS Board and Replace
Is the VCC (FD+) supNO plied to Q163 Collector ?
YES
Check D121 on SMPS Board and Replace
Is there about 12.5V at NO ZD152 & Q165 Base?
YES
Check Q165 and Replace
Is there about 5.3V at R184 and Q153 Collector ?
YES
NO
Check Q163 and Replace
Is the VCC (33V) sup- NO plied to Q160 Emitor?
YES
Check D126 on SMPS Board and Replace
Is the VCC (5.3V) supplied to Q153 Emitor ?
YES
NO
Check 5.3VA on SMPS Board
Is there about 0V at NO Q160 Base?
YES
Check Q160 and Replace
Is there about 0V at Q153 Base ?
YES
NO
Check the �STANBY H� signal from µ-COM
Is there about 5.3V NO at Q166 Base?
YES
Check SW_5.3VA
Check Q153 and Replace
Check Q166 and Replace
No 1.8V
YES
No 1.25V
YES
Is the VCC (3.3V) supplied to Q159 NO Emitor And IC154 pin 1,2,8 ?
YES
Check 3.3V power supply
Is the VCC (2V) supplied NO to Q154 Emitor ?
YES
Check D155 and 2.5V power supply
Is there about 3V ~ 3.3V at Q159 Base and IC154 pin 3 ?
YES
NO
Check Q159 and Replace
Is there about 2V ~ 2.5V at Q154 Base and IC154 pin 4?
YES
NO
Check Q159 and Replace
Check IC154 and Replace
Is the VCC (3.3V) sup- NO plied IC154 pin 1,2,8 ?
YES
Check 3.3V power supply
Check IC154 and Replace 3-6
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