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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.
3-6. CONVERGENCE ADJUSTMENT
1. Input the dot pattern signal. Set CONTRAST to the position at which it can be seen clearly. Set BRIGHTNESS to MIN. 2. Align the R, G, B dots in the horizontal direction at the center of the screen using RV703 (H-STAT). Note: If H-CENT was changed after adjusting HSTAT, adjust H-STAT again. (The HSTAT can be changed by the H-CENT switch.) 3. Align the top and bottom of R, G, B at the center of the screen using the V-STAT (vertical static convergence) magnets. Note: After the V-STAT adjustment, always paint the magnets to lock.
I I' I I'
5. For VMC, use a 6-pole magnet to adjust so that the R and B dots are symmetrical above and below the G dot.
R (Top section) Fixed G B
(Bottom section)
6-pole magnet Perform the VMC adjustment by rotating the 6-pole magnet to the left and right without changing the opening of it.
Adjust so that the displacement of the dot is equal at the top and bottom.
A
B
A
B
6. Repeat steps 2 to 5 until the convergence becomes correct. Note: Adjusting the convergence may affect the landing. Therefore be sure to check the landing again after completing this adjustment. 7. After adjusting, paint each magnet to lock them.
14-inch
X
X
Y Good example
Y Bad example
V.STAT convergence magnet Purity BMC magnet
While maintaining the V-STAT magnet knobs A and B at the same angle (I = I'), adjust the top and bottom convergences. If A and B are asymmetrical (I = I'), it will have a negative effect; the focus may not be accurate, or the beam striking may occur. 4. For HMC, use a 6-pole magnet and adjust so that the R and B dots are symmetrical at the left and right sides in respect to the G dot.
I I' R G B
20-inch V.STAT convergence magnet
A
B A A'
Purity BMC magnet
6-pole magnet Perform the HMC adjustment by changing the opening of the 6-pole magnet.
Adjust the 6-pole magnet so that A = A'. While maintaining the I and I' angles equal, adjust the 6-pole magnet.
3-6
SIIA Chassis
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