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Very fast service, best quality of the service manual and the schematics
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This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
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Hi, this is a very clear manual, nice copy, not quite up to the standard of the very best available but better than many others. I think the price was especially fair for a hard to find manual and I would certainly use this manual seller again. Recommended.
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This schema available for me in good condition. I would highly recommend.
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Thanks for this "hard to find" service manual.
I apreciate the good quality of scanning and the pages scanned in A3 format.
5. AUDIO ADJUSTMENT
Main Amplifier Idle Current Adjustment 1. Test Point: Lch: U299 (+), U300 (-) or R737, 0.18 oh ms X2 Rch: U297 (+), U298 (-) or R738, 0.18 ohms X2 2. Adjust Resistor Lch: R719, Rch: R720 3. Procedu res (1) Before switching the power ON, do no t input sign al to inpu t terminal. Then, rotate the above semi-fixed resistors R719 and R720 on the PC bo ard PV04 to center position. For preli minary sett ing, Volume con trol to the minimum position and the Tone control to the center po sition at turned on . (2) Connect a digital voltmeter set for the DC voltage inpu t to the pertinent test point on the PV04. (3) Aft er the component of the above setup. Switch the power ON and adjust the semi-fixed resistor R719 and R720 on the PV04 acc ording to the reading of the digital voltmeter. The setting values are 5mV(14mA) of the bo th channels. Refer to the table below. Time of aft er Power-ON: 30sec 60sec More than 5 minute 3.0mV ( 8.3mA) 4.0mV (11.1mA) 7.0m V (19.4mA)
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