Trouble Shooting ………………………………………………………………………………………

5.3 VT8235 South Bridge ………………………………………………………………………………………………. 106

6. System Block Diagram ……………………………………………………………………………….. 115

7. Maintenance Diagnostics ……………………………………………………………………………… 116

7.1 Introduction ………………………………………………………………………………………………………… 116

7.2 Error Codes ………………………………………………………………………………………………………… 117

7.3 Debug Tool ………………………………………………………………………………………………………….. 119

8. Trouble Shooting ……………………………………………………………………………………… 121

8.1 No Power ……………………………………………………………………………………………………………. 122

8.2 Battery Can not Be Changed ……………………………………………………………………………………… 126

8.3 No Display …………………………………………………………………………………………………………… 128

8.4 AGP Controller Failure LCD No Display ………………………………………………………………………… 132

8.5 External Monitor No Display ……………………………………………………………………………………… 132

8.6 Memory Test Error ………………………………………………………………………………………………… 136

8.7 Keyboard (K/B) Touch-Pad (T/P) Test Error …………………………………………………………………….. 138

8.8 Hard Driver Test Error …………………………………………………………………………………………….. 140

8.9 CD-ROM Driver Test Error………………………………………………………………………………………… 142

8.10 USB Port Test Error ……………………………………………………………………………………………….. 144

8.11 PC Card Socket Failure ……………………………………………………………………………………………147

8.12 Memory-Card Socket Failure …………………………………………………………………………………….. 149

8.13 IEEE1394 Test Error………………………………………………………………………………………………. 151

8.14 LAN Test Error…………………………………………………………………………………………………….. 153