User manual

39
General Problems
Refer to the following general problems you may encounter.
PROBLEM SOLUTION
The display screen is dark. Make sure that the SP-820 is not in suspend mode.
An incorrect date and time are displayed.
Correct the date and time using the DOS DATE
and TIME commands or the options in the Setup
Utility. (You can also set the date and time in
Windows by double clicking the clock on the task
bar or in the control panel.) If the date and time
become incorrect after a short time, the CMOS
battery may be depleted. Replace the battery.
The following message appears at boot up:
“Invalid system disk, Replace the disk, and then
press any key”
Ensure that an operating system is installed.
Check the boot sequence in the BIOS setup utility.
You hear irregular beeps during operation of the
computer and the system halts.
Have the SP-820 serviced.
Anunidentiedmessageisdisplayed.
Reboot the computer and run the BIOS Setup
Utility.ConrmtheSetupUtilityparameters.Ifthe
same message is displayed after booting up again,
have the SP-820 serviced.
You cannot operate the printer.
Check the printer cable connection. Ensure that the
printerpowerswitchisturnedon.Conrmthatthe
printer is on-line.
You cannot use a mouse or keyboard.
Check the cable connection.
Check the mouse or keyboard with another
computer to see if it works. If the same problem
occurs, replace the mouse or keyboard.
The screen is blank and you don’t hear any beeps.
Check that the AC adapter is connected to the SP-
820 and the power cord is plugged into a working
electrical outlet.
Check that the power is on. (Press the power
switchagainforconrmation.)
The screen is blank and you hear a continuous
beep, or two or more beeps.
Have the SP-820 serviced.
Only the cursor appears.
Reinstall the operating system, and power on the
SP-820.
Audio problems
Ensure the audio cable is not defective.
The mute is off.