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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
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Great copy of the manual, has all information required for servicing,
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I work at an authorized service center and I can tell if a manual is as it should be. This one is. It may be a scan, but a very good one at that. The interesting part for me was the curcuit diagram which was scanned at high quality, making it as good as the original. I will definitely be back as a customer. I need not say this, but I will: the price was the best. Thank you owner-manuals.com .
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really a very good manual even sometimes the quality is no so good as before still very readible and very very useful!
3. SERVO SYSTEM CHECK 3-1. RF Switching Position Adjustment (MA-341 Board) [Adjustment Purpose] To adjust the link of the A-ch and B-ch of the tape playback outputs. To make the unit compatible with other tapes and units. If this specification is not satisfied, the link will appear on the screen and the screen will be disrupted, etc. Mode Signal Measurement point Playback Alignment tape: SP color bar portion CH1: CN270 pin 2 (PB RF) CH2: CN270 pin 3 (RF SWP) Oscilloscope REMOCON CH+/� A=minimize
4. AUDIO SYSTEM ADJUSTMENT � Adjust both L ch and R ch. [Connecting Instruments]
Audio line OUTPUT L/R Audio line INPUT L/R Audio oscillator 600 � Attenuator VTR Audio level meter or distortion meter 47 k�
Measuring instrument Adjusting element Specified value
Fig. 6-2-4
4-1. Hi-Fi Audio System Adjustment (Hi-Fi model only) � Perform the adjustment setting the switch on the following positions. � AUDIO MONITOR ..................................................... STEREO [Adjustment Method] 1. ACE head adjustment.....Refer to the VHS mechanical adjustment manual (S MECHANISM)(9-921-647-11). 2. E-E output level check 3. �Recording Bias Adjustment�
[Adjustment Method] 1) Playback the alignment tape. 2) Short JS401 to Ground. 3) Check that �A P� is indicated on FL display. 4) Adjust so that part A becomes minimized at CH +/�. 5) Write data in EEPROM by pressing PAUSE button. Monoral model: 6) The display �A P� disappears and then the Adjustment mode terminates. Hi-Fi model: 6) The display changes to �A H� and the mode goes to the HiFi switching position Adjustment.
A CH1 PB RF CH2 RF SWP
Fig. 6-2-3
6-3
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