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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.
CD SECTION
Note: 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. 5. Adjust the focus bias adjustment when optical block is replaced. Focus Bias Adjustment
oscilloscope CD board TP (RF) TP (VC)
S Curve Check
oscilloscope CD board TP (FEO) TP (VC)
Procedure : 1. Load CDs into the each tray (seven pieces). 2. Connect oscilloscope to test point TP (FEO). 3. Connect between test point TP (FOK) and Ground by lead wire. 4. The focus search is performed by turning ON the SYSTEM POWER. It searches DISC 1-7 in order and stops. 5. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2.4 ± 0.7 Vp-p.
S-curve waveform symmetry
Procedure: 1. Connect oscilloscope to test point TP (RF). on CD board. 2. Turned SYSTEM POWER switch on. 3. Put disc (YEDS-18) in to playback the number two track. 4. Adjust RV101 so that the waveform is clear. (Clear RF signal waveform means that the shape � � can be clearly distinguished at the center of the waveform.) 5. After adjustment, check the RF signal level.
� RF signal VOLT/DIV: 200 mV TIME/DIV: 500 nS
A
within 2.4 ± 0.7 Vp-p
B
6. After check, remove the lead wire connected in step 3. Note: � Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. � Take sweep time as long as possible and light up the brightness to obtain best waveform. RF Level Check
oscilloscope CD board TP (RF) TP (VC)
level: 1.2 ± 0.2 Vp-p
Procedure : 1. Connect oscilloscope to test point TP (RF) on BD board. 2. Turned SYSTEM POWER switch on. 3. Put disc (YEDS-18) in to playback the number two track. 4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. Note: Clear RF signal waveform means that the shape � � can be clearly distinguished at the center of the waveform.
RF signal waveform VOLT/DIV: 200 mV TIME/DIV: 500 nS level: 1.2 ± 0.2 Vp-p
� 33 �
 $4.99 SAVA100 SONY
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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