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NAD T517AHT Service Manual

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Contents
  1. SERVICING PRECAUTIONS
  2. specifications
  3. EXPLODED VIEWS
  4. DECK MECHANISM SECTION (DP-12V)
  5. packing accessory section
  6. Table Of Contents
  7. ELECTRICAL TROUBLESHOOTING GUIDE
  8. POWER CHECK FLOW
  9. SYSTEM OPERATION FLOW
  10. SYSTEM TEST FLOW
  11. DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGIBG
  12. SDRAM CLOCK
  13. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
  14. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION)
  15. FOCUS ON WAVEFORM
  16. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)
  17. TRACKING CONTROL RELATED SIGNAL (SYSTEM CHECKING)
  18. MT1389S AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)
  19. AUDIO OUTPUT FROM MT1389S
  20. CONNECTOR PICTURE
  21. MAIN BOARD CONNECTOR PICTURE
  22. CN201 CONNECTOR PICTURE
  23. CN601 CONNECTOR PICTURE
  24. CN604 CONNECTOR PICTURE
  25. CN705 CONNECTOR PICTURE
  26. BLOCK DIAGRAMS
  27. POWER (SMPS) BLOCK DIAGRAM
  28. MPEG & MEMORY BLOCK DIAGRAM
  29. SERVO BLOCK DIAGRAM
  30. VIDEO & HDMI BLOCK DIAGRAM
  31. AUDIO BLOCK DIAGRAM
  32. CIRCUIT DIAGRAMS
  33. MPEG CIRCUIT DIAGRAM
  34. SERVO CIRCUIT DIAGRAM
  35. JACK CIRCUIT DIAGRAM
  36. SCART CIRCUIT DIAGRAM (OPTION)
  37. USB CIRCUIT DIAGRAM
  38. TIMER CIRCUIT DIAGRAM
  39. CIRCUIT VOLTAGE CHART
  40. PRINTED CIRCUIT BOARD DIAGRAMS
  41. POWER (SMPS) P.C.BOARD
  42. SCART P.C.BOARD (OPTION)
  43. replacement parts list
NAD T517AHT Service Manual Manual pdf 17 page image
3-4ELECTRICAL TROUBLESHOOTING GUIDEIs 5.6V present atcollector of Q126? No 3.3VAYES YESYES YESNo 5V No 3.3VA.Replace Q126. Check FR101 Replace Q121.YESIs there a DC voltage atcathode of D105 or D107?YESNONONONOReplace IC101.2. POWER CHECK FLOWA. B.Check D105/D106/D107/D108 and replace.Is 3.3VAsection working? Is 3.3VAsection working?Is 3.3Vpresent at emitterof Q121?
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This manual is suitable for:
T517AHT517AHTT517CT517CT
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