98
Chapter 4
System Check Procedures
External CD/DVD-ROM Drive Check
Perform the following procedures to isolate the possible problem a controller, drive, or CD-ROM.
NOTE:
Make sure that the CD-ROM does not have any label attached to it. The label may damage the drive or
cause drive failure.
1.
Boot from the diagnostic disc and start the diagnostic programs.
2.
See if CD-ROM Test is passed when the program runs the CD-ROM Test.
3.
Follow onscreen instructions.
If an error occurs, reconnect the drive to the connector on the mainboard. If the error persists, do the following:
1.
Reconnect the CD/DVD-ROM drive.
2.
Replace the CD/DVD-ROM drive.
3.
Replace the mainboard.
Keyboard or Auxiliary Input Device Check
Remove the external keyboard if the internal keyboard is to be tested.
If the internal keyboard does not work or an unexpected error occurs, make sure that the flexible cable
extending from the internal keyboard is correctly connected to the mainboard. If the keyboard cable
connection is correct, run the Keyboard Test.
If the tests detect a keyboard problem, do the following procedures in sequence to correct the problems. Do
not replace a non-defective FRU:
1.
Reconnect the keyboard cable.
2.
Replace the keyboard.
3.
Replace the mainboard.
The following auxiliary input devices are supported by this computer:
T
Numeric keypad
T
External keyboard
If any of these devices do not function, reconnect the cable and repeat above procedures.
Memory Check
NOTE:
Make sure that the DIMM is properly installed into the connector. A loose connection can cause an
error.
Do the following:
1.
Boot from the diagnostic diskette and start the diagnostic program.
2.
Go to the diagnostic memory in the test items.
3.
Press
F2
in the test items.
4.
Follow onscreen instructions.
SG_Aspire4920_Book.book Page 98 Monday, May 28, 2007 6:49 PM
Summary of Contents for Aspire 4920
Page 10: ...x ...
Page 50: ...40 Chapter 1 ...
Page 58: ...48 Chapter 2 ...
Page 94: ...84 Chapter 3 19 Carefully detach the RTC battery from the SD card slot ...
Page 105: ...Chapter 3 95 17 Remove the microphones ...
Page 106: ...96 Chapter 3 ...
Page 123: ...Chapter 5 113 System Block Diagram System Block Diagram and Connector Locations Chapter 5 ...
Page 126: ...116 Chapter 5 Switch Setting Short R525 to clear password ...
Page 130: ...120 Chapter 4 Aspire 4920 Exploded Diagram ...
Page 139: ...Chapter 4 129 ...
Page 141: ...131 Appendix A ...
Page 142: ...Appendix A 132 ...
Page 148: ...138 Appendix B ...
Page 150: ...140 Appendix C ...