Compaq Presario 1660 Service Manual page 47

"Compaq.com - Compaq Presario 1660 Model Maintenance and Service Guide -
Probable Cause Recommended Action
Keyboard failure
304-Keyboard or System Unit Error
Probable
Recommended Action
Cause
Keyboard 1. Replace the keyboard.
or system 2. Replace the TouchPad or mouse.
board error 3. Replace the system
601-Diskette Controller Error
Probable
Recommended Action
Cause
Mismatch in 1.
drive type or
(TEST).
failure in the
2. Check and/or replace
diskette
cables.
controller
3.
605-Diskette Drive Error
Probable Cause
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20checked%20ok/NOTEBOOKS/PRESARIO%201660/post.html (3 of 4)6/27/2004 3:00:33 AM
301-Keyboard Error
1. Ensure the keys are not depressed during
POST.
2. Reconnect the keyboard with the computer
off.
3. Replace the keyboard.
Run Computer Checkup
Replace the system
Recommended
Action
board.
board.