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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
XM-2150GSX SECTION 3 ELECTRICAL ADJUSTMENT
Bias Adjustment
Note : In Bias Adjustment, adjust RV105 if any of Q108 through Q113 are replaced. Adjust RV205 if any of Q208 through Q213 are replaced. Condition : This adjustment should be performed about one minute after the remote mode is turned on at a room temperature of about 25°C. Setting :
B+, REM terminal
set Stabilized Power supply GND terminal
Procedure : 1. Turn the variable resistors RV105 (L-CH) and RV205 (R-CH) full clockwise as seen from the component side to minimize the bias current. 2. The input signal is to be no signal. 3. Apply the voltage to the B+ and REM terminals from the stabilized power supply and gradually increase it up to 14.4 V while checking for any unusual current. 4. Adjust each of RV105 (L-CH) and RV205 (R-CH) so that the power current of the stabilized power supply is increased in steps of 500 mA (total of 1 A). 5. After adjustment, check that the power current is at 1.3 to 2.0 A.
Adjustment Location : Main board (component side)
� MAIN BOARD (COMPONENT SIDE) �
RV105 BIAS ADJUSTMENT (L-CH)
RV205 BIAS ADJUSTMENT (R-CH)
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