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It is pretty good. The schematics were covered all components, the manual also provide the parts list . It's useful for the trouble shooting.
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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.
B1 POWER SUPPLY ADJUSTMENT 1. Set VR641 to be mechanically centre before pressing the mains ON/OFF switch. 2. Tune the receiver to a PAL circular pattern. 3. Set the brightness and contrast controls to normal. 4. Connect a digital V-meter to test point "TP-B". 5. Using VR641, adjust the voltage to 150 ± 0.5V.
AFT ADJUSTMENT 1. Tune the receiver to the clearest station. 2. Using T141, adjust the AFT to obtain the best picture.
HIGH VOLTAGE & WIDTH ADJUSTMENT [HIGH VOLTAGE ADJUSTMENT] 1. Tune the receiver to the circular pattern. 2. Set the brightness and contrast controls to maximum. 3. Connect a digital V-meter to both terminals of R224, and a high voltage meter to the CRT anode. 4. Confirm high voltage to be 26.0 ± 1 KV at beam current 1.4, and less than 29.0 KV at 0 beam current.
AGC ADJUSTMENT NOTE: Do not attempt this adjustment with a weak signal. 1. Tune the receiver to the clearest station. 2. Set AGC VR(VR131) in direction which causes snow noise just to appear, then in the opposite direction until the snow noise just disappears. GREY SCALE ADJUSTMENT [SCREEN VR ADJUSTMENT] 1. Tune the receiver to the white pattern. 2. Set the brightness and contrast controls to normal. 3. Set VR602and VR612 to their mechanical centres. 4. Turn VR601, VR611 and VR621 fully counter-clockwise (anti-clockwise). 5. Set the TV into service mode by pressing the Function button F on the Remote control and the Prog + P on the TV front panel. Press the Function button F on the Remote control until �SCREEN� is highlighted. This sets up a horizontal scanning line. 6. Set screen VR so that one colour is just visible. [BIAS VR ADJUSTMENT] 7. By using VR601, VR611 or VR621, adjust the line until it becomes white. 8. Set screen mode OFF, by pressing the Recall button on the Remote control. [DRIVE VR ADJUSTMENT] 9. Using VR602 and VR612, adjust white balance.
[H-WIDTH ADJUSTMENT] 5. Adjust VR462 to obtain proper H- width . 6. Reconfirm high voltage.
H-CENTRE ADJUSTMENT 1. Tune the receiver to a circular pattern. 2. Adjust H-centre by using VR361.
V-CENTRE ADJUSTMENT 1. Tune the receiver to a circular pattern. 2. Adjust V-centre by using SW501.
V-SIZE ADJUSTMENT 1. Tune the receiver to a circular pattern. 2. Adjust V-size by using VR501.
FOCUS ADJUSTMENT By using FOCUS VR, adjust focus control for good scanning lines.
-7F2WDMK
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