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Excellent service, and just what I needed to service my TU-7700. All pages of the manual are clear and easily readable.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
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We received the manual in a timely manner and it was exactly what we were expecting. Excellent replacement for original Service Manual.
All schematics are very legible. We are really satisfied.
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We received the manual in a timely manner and it was exactly what we were expecting. Excellent replacement for original Service Manual.
All schematics are very legible. We are really satisfied.
;
We received the manual in a timely manner and it was exactly what we were expecting. Excellent replacement for original Service Manual.
All schematics are very legible. We are really satisfied.
T D A 8374 has a black current stabilization loop, that autom atically adjust the black level to the cut-off voltage of the picture tubes three gun cathodes. S ince no current is flow ing w hen the voltage the cathode is equal to the cut-off voltage of the tube, the loop stabilizes at a very sm all gun current. T his �black current� of the three guns is m easured internally and com pared w ith a reference current, to adjust the black level of R G B out. T he black level loop is active during 4 lines at the end of the vertical blanking. In the first line the leakage current is m easured (m ax. acceptable 100
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