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Perfect like it was descriped, Perfect like it was descriped
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Very good detail, all pages clear, exactly what I needed
;
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.
C.
DISC IN
OPEN/CLOSE
Fig.3. FOCUS ERROR waveform NO FOCUS ON? YES
Check the focus error moving the lens up and down. (IC2A1 Pin 42)
NO
Check IC2A1 Pin 11,12,13,14 in DVD Mode IC201 no output : Pick-up is defective.
YES
Does the TTL level change at IC201 Pin 78 and 132 moving the lens?
NO Replace IC201.
YES
Replace µ-COM or IC201.
NO Does the disc turn? YES
Check IC2M1 Pin 18, PMD03 Pin 6 turn when the IC2M1 Pin 21 is less than 2.2V.
Check IC201 and IC2M1 when PMD03 Pin 6 is abnormal
NO IC201 Pin169 is "High"? YES Check A
Is OK the track jump. YES
NO
Does the signal pulse appear at IC2A1 Pins 39, 29? YES
NO
IC2A1 is defective.
NO Does the screen appear? YES
Video Part is defective. Check "5.MPEG Circuit." Check "7.OSD/Video Circuit."
Replace µ-COM part.
END
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