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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
System work?
Power LED light?
BIOSCS# OK?
POWEROK = H?
X504 32.768kHz OK?
PCIRST# OK?
RSTDRV OK?
N
every Clock OK?
Clock problem
Check U509,U510
Start
Y
N
Power on
N
Y
Power source abnormal
Y
N
Device problem 2
N
Y
Check R90,R570,U14,U16
N
Y
VCC_RTC >2.6V
Check X504,R554,
C528,C538
N
Y
Check U510
Y
Device problem
Charge problem
N
Y
Check D16,D18,D20,
C160,R125,C152
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