Troubleshooting 79
System problems
The system will not start up.
The keyboard doesn’t work.
Probable Cause
Solution
The system is not con-
nected to an AC outlet.
Check the power cable(s) and make certain
it is connected to an AC power source.
Voltage selection
switch not set correctly.
Make certain the voltage selection switch is
set for the correct power source.
One power supply is
not supplying power to
the load share module.
Verify both power cords are plugged into
working AC outlets.
Verify that both power cords are fully
plugged into their AC-IN connectors on rear
of computer.
Verify that both power supplies are set to the
correct voltage range (115-V AC or 230-V
AC).
Verify that both power supplies are turned
on. Replace defective power supply.
Probable Cause
Solution
A key was depressed
while the system was
starting up.
Clear the sticking key. Then turn off the sys-
tem, wait for a few seconds, and then turn
the system back on.
The keyboard is not
plugged in or con-
nected properly.
Check the cable. Make certain it is plugged
in correctly.
Something spilled into
the keyboard.
Turn off the system. Turn the keyboard
upside down to let it dry before turning the
system back on.
The keyboard is defec-
tive.
Try a keyboard you know is working.
Summary of Contents for E-420
Page 1: ...Maintaining and Troubleshooting Your E 4200 System ...
Page 11: ...viii Maintaining and Troubleshooting Your E 4200 System ...
Page 76: ...3 Chapter 3 BIOS Setup About the BIOS setup utility 66 Updating the BIOS 67 ...
Page 98: ...A Appendix Specifications 88 Regulatory Compliance Statements 90 ...
Page 103: ...92 Maintaining and Troubleshooting Your E 4200 System ...
Page 107: ...96 Maintaining and Troubleshooting Your E 4200 System ...
Page 108: ......