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Very helpfull information and I highly recommend this source for needed information about your products.
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More than pleased with my prurchase, very good product for the price.
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This is a good quality scan of the service manual which includes an assembly diagram, block diagram, schematic, and parts list. Exactly what is needed to repair my KR-V55R receiver.
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Excellent concise manual. All needed information was included. Typeface and diagrams were clear. Very fair price considering what others are charging. Many thanks
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Response is a little slow- I had to wait 12 hours to receive download link but it says that it may take up to 24hrs.
Manual is old and was not produced in PDF- scanned copy is exellent.
Overall- value for money- I recommend
CHAPTER 3. TROUBLE SHOOTING
1. Trouble shooting 2. Device problem 3. Power source abnormal 4. Power on problem 5. Power line problem 6. 3.3V/5V problem 7. VTT problem 8. VCC_CORE problem 9. Battery charge problem 10. Sheet Battery charge problem 11. Clock problem 12. MEMORY problem 13. BIOS problem 14. HDD problem 15. LCD problem 16. CRT problem 17. Keyboard problem 18. Touch pad problem 19. Audio problem 20. Modem problem 21. PCMCIA problem 22. IR problem 23. LAN problem 24. USB1 problem 25. USB2 problem 26. USB HUB problem 27. IEEE1394 problem 28. CDROM problem 29. FDD problem 30. PDC Adapter problem
1. Trouble shooting
Start
System work?
Y
Device problem Charge problem
N
Power on
Power LED light?
N
Y
Power source abnormal
Y
BIOSCS# OK?
N
Device problem 2 POWEROK = H?
N
Y
Check R90,R570,U14,U16
N
X504 32.768kHz OK?
Y
VCC_RTC >2.6V
N
Y
Check D16,D18,D20, C160,R125,C152
Check X504,R554, C528,C538
PCIRST# OK? RSTDRV OK?
N
Y
Check U510
N
every Clock OK?
Y
Clock problem
Check U509,U510
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 $4.99 PC-AX40 SHARP
Parts Catalog Parts Catalog only. It's available in PDF format. Useful, if Your equipment is broken and You need t…
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