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NAD L55
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of NAD L55 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 20 (click to view)
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 21, 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

2-10

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L55 NAD
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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