NEC Versa 550 Series Service Manual page 9

vi Contents
Parts Removal and Replacement Procedures ................................................................ 4-13
Removing/Replacing the Notebook Battery Pack .................................................. 4-13
Removing/Replacing the Internal Keyboard .......................................................... 4-13
Removing/Replacing the LCD Status Bar Cover, the LCD Panel, and the LCD Status
Bar Module....................................................................................................... 4-14
Removing/Replacing the System Top Cover Case Assembly and the Trackball
Assembly........................................................................................................... 4-15
Removing/Replacing the Hard Disk Drive............................................................. 4-15
Removing/Replacing the Floppy Disk Drive.......................................................... 4-16
Removing/Replacing the Powerboard ................................................................... 4-17
Removing/Replacing the CPU............................................................................... 4-18
Removing/Replacing the Entire Motherboard........................................................ 4-19
Section 5 Troubleshooting and Repair
Service Information ..................................................................................................... 5-1
Technical Support........................................................................................................ 5-2
Product Information .................................................................................................... 5-2
Ordering Information from FastFacts ........................................................................... 5-2
Helpful Questions ........................................................................................................ 5-3
Power On Self Test (POST) ........................................................................................ 5-3
POST Messages ................................................................................................... 5-4
Informational Messages ............................................................................................... 5-7
Beep Codes ................................................................................................................. 5-7
Explanation of Test Terms for Beep Code Table................................................... 5-7
Beep Codes for System Board Errors ................................................................... 5-8
Run-Time Error Messages ........................................................................................... 5-13
Quick Troubleshooting ................................................................................................ 5-14
Appendix A Supported Video Modes
VGA Standard Modes ................................................................................................. A-1
VGA Extended Modes ................................................................................................ A-2
VGA High Refresh Modes........................................................................................... A-4
List of Figures
1-1 NEC Versa 550 Series Notebook................................................................... 1-1
1-2 System Configuration Diagram ...................................................................... 1-3
1-3 Front of the Notebook ................................................................................... 1-4