| 7521Plus / N N/B MAINTENANCE | |
CONTENTS | |
6. System Block Diagram -------------------------------------------------------------------------------------------------------------------------- | 97 |
7. Maintenance Diagnostic ------------------------------------------------------------------------------------------------------------------------ | 98 |
7.1 | Introduction ----------------------------------------------------------------------------------------------------------------------------- | 98 |
7.2 | Error Codes ----------------------------------------------------------------------------------------------------------------------------- | 99 |
7.3 | Diagnostic Tools ------------------------------------------------------------------------------------------------------------------------ | 101 |
| | 102 |
8. Trouble Shooting --------------------------------------------------------------------------------------------------------------------------------- | |
8.1 No Power --------------------------------------------------------------------------------------------------------------------------------- | 103 |
8.2 | No Display ------------------------------------------------------------------------------------------------------------------------------- | 108 |
8.3 | VGA Controller Failure LCD No Display ---------------------------------------------------------------------------------------- | 111 |
8.4 | External Monitor No Display -------------------------------------------------------------------------------------------------------- | 113 |
8.5 | Memory Test Error -------------------------------------------------------------------------------------------------------------------- | 115 |
8.6 | Keyboard ( K/B ) , Touch-Pad ( T/P ) , ESB Test Error ----------------------------------------------------------------------- | 117 |
8.7 | CD-ROM Drive Test Error ---------------------------------------------------------------------------------------------------------- | 119 |
8.8 | Hard Drive Test Error ---------------------------------------------------------------------------------------------------------------- | 121 |
8.9 | USB Port Test Error ------------------------------------------------------------------------------------------------------------------ | 123 |
8.10 Audio Failure -------------------------------------------------------------------------------------------------------------------------- | 125 |
8.11 SIO Port Test Error ------------------------------------------------------------------------------------------------------------------ | 128 |
8.12 PIO Port Test Error ----------------------------------------------------------------------------------------------------------------- | 130 |
8.13 PC CARD Socket Failure ----------------------------------------------------------------------------------------------------------- | 132 |
9. Spare Parts List ----------------------------------------------------------------------------------------------------------------------------------- | 134 |
10. System Explode View -------------------------------------------------------------------------------------------------------------------------- | 143 |
11. 7521 Plus/N Schematics ---------------------------------------------------------------------------------------------- | 145 |
12. Reference ----------------------------------------------------------------------------------------------------------------------------------------- | 180 |
