Laptop User Manual

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7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
8. TROUBLE SHOOTING
8.1 NO POWER
8.2 NO DISPLAY
8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY
8.4 EXTERNAL MONITOR NO DISPLAY
8.5 MEMORY TEST ERROR
8.6 KEYBOARD(K/B) TOUCH-PAD(T/P) , ESB TEST ERROR
8.7 CD-ROM DRIVE TEST ERROR
8.8 HARD DRIVE TEST ERROR
8.9 USB PORT TEST ERROR
8.10 AUDIO FAILURE
8.11 SIO PORT TEST ERROR
8.12 PIO PORT TEST ERROR
8.13 PC-CARD SOCKET FAILURE