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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
FLOW CHART NO.11 The fluorescent display tube does not light up. Is 3.3V voltage supplied to Pins(6,24) of IC2001? Yes Is the voltage of approximately -20V supplied to Pin(15) of IC2001? Yes Is there 500kHz oscillation at Pin(26) of IC2001? No No Check the -FL (-20V) line and service it if defective. No Check R2002, IC2001 and their periphery, and service it if defective. Check D1016, D1017, T1001, and their periphery, and service it if defective. No No Is -15V voltage supplied to collector of Q1005? Check PWRCON line, and service No it if defective. Yes Check Q1015, Q1016, D1055, and their periphery, and service it if defective. Is the "H" signal inputted to base of Q1016? Yes Check the EV+3.3V line and service it if defective.
Yes Are the filament voltage supplied between Pins(1, 2) and Pins(29, 30) of the fluorescent display tube? And the negative voltage applied between these pins and GND? Yes Replace the fluorescent display tube.
FLOW CHART NO.12 The key operation is not functioning. Are the contact point and the installation state of the key switches (SW2101, SW2104-2108) normal? Yes When pressing each switches (SW2101-2108), do the voltage of each pin of IC2001 (shown below) increase? SW2104, 2106, 2107: IC2001 3PIN SW2101, 2105, 2108: IC2001 4PIN Yes Replace IC2001. FLOW CHART NO.13 No operation is possible from the remote control unit. Operation is possible from the DVD, but no operation is possible from the remote control unit. No Is 5V voltage supplied to Pin(3) terminal of the infrared remote control receiver (RM2001)? Yes Is the "L" pulse sent out Pin(1) terminal of receiver No (RM2001) when the infrared remote control is activated? Yes No Is the "L" pulse supplied to the Pin(22) of CN1001? Yes Replace DVD Main CBA. Check EV+5V line and service it if defective. No Re-install the switches (SW2101, SW2104-2108) correctly or replace the poor switch. Check the switches (SW2101, SW2104-2108) and their periphery, and service it if detective.
No
Replace the infrared remote control receiver (RM2001). Or replace the remote control unit. Check the line between Pin(1) terminal of receiver (RM2001) and Pin(22) of CN1001, and service it if defective.
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