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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
Main CBA Top View
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
TP601 +B
4A/125V
CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used. Also, in order to have the ability to increase the input slowly,when troubleshooting this type power supply circuit, a variable isolation transformer is required.
MAIN CBA Ref No. Position ICS IC31 B-1 IC111 D-1 IC151 E-2 IC551 B-2 IC601 C-4 IC801 E-1 TRANSISTORS Q31 C-1 Q111 E-2 Q321 C-1 Q571 B-3 Q572 B-2 Q601 B-4 Q602 B-4 Q662 Q671 Q675 C-3 C-3 C-2
FOCUS-VR (UPPER SIDE)
SCREEN-VR (LOWER SIDE) TP300 GND
Q676 C-2 Q681 D-3 Q682 D-3 Q683 D-3 CONNECTORS CN571 A-3 CN691 C-4 CN801 D-1 WH301A C-2 WH501A A-2 TEST POINTS TP300 A-3 TP601 A-4 VARIABLE RESISTOR VR661 A-1
VR661 +B ADJ
3-4
BL2300F01011-1
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