User manual

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APPENDIX
This appendix describes locating and solving problems that you may encounter while using the SP-820 POS.
Troubleshooting
Often after time spent troubleshooting, the problem is traced to something as simple as a loose connection.
Checkthefollowingbeforeproceedingtotheproblem-specicsolutions.
Tips for Troubleshooting
Ineachproblem-specicsection,trythestepsintheordersuggested.Thismayhelpyoutosolvetheproblem
more quickly. Try to pin point the problem and thus avoid replacing non-defective parts. For example, if you
replace batteries and the problem remains, put the original batteries back and go to the next step.
Keep a record of the steps you take when troubleshooting: The information may be useful when calling for
technical support or for passing on to service personnel.
• Usesomeotherelectricaldevicetoconrmthattheelectricaloutletisworking.
• Ensure all connections are securely attached.
The Power-On Self Test
The Power-On Self Test (POST) runs every time you turn on or reset the computer. The POST checks
memory, the mainboard, the display, the keyboard, the disk drives, and other installed options.
If failure is detected in an area other than the mainboard (such as the keyboard or an adapter card), an error
message is displayed on the screen and testing is stopped.
If your system does not successfully complete the POST, but displays a blank screen, have the SP-820
serviced.
Beep Errors at POST
There are two kinds of beep codes in the BIOS.
• Video error - an eight-beeps indicates a video error, the screen can not be initialized and no informa-
tion can be displayed.
• DRAM error - a continuous beep indicates that a DRAM error has occurred.