protech PC-550, User Manual, Page: 94 / 106

Appendix C Trouble Shooting
PC-550 USER
′
S MANUAL
Page: C-2
C-1 TROUBLE SHOOTING FOR ERROR MESSAGE
The following information informs you the error messages and the trouble
shooting. Please adjust your systems according to the messages below. And
make sure all the components and connectors are in proper position and firmly
attached. If the errors still encountered, please contact with your distributor for
maintenance.
POST BEEP :
Currently there are two kinds of beep codes in BIOS. The one code indicates
that a video error has occurred and the BIOS cannot initialize the video screen
to display any additional information. This beep code consists of a single long
beep followed by three short beeps. The other one code indicates that your
DRAM error has occurred. This beep code consists of a single long beep
repeatedly.
CMOS BATTERY FAILURE :
When the CMOS battery is out of work or has run out, the user has to replace
the whole unit.
CMOS CHECKSUM ERROR :
This error message informs you that the CMOS is corrupted. When the battery
runs weak, this situation might happen. Please check the battery and change a
new one when necessary.
DISPLAY SWITCH IS SET INCORRECTLY :
Display switch on the motherboard can be set to either monochrome or color.
This indicates the switch is set to a different setting than indicated in Setup.
Determine which setting is correct, and then either turn off the system and
change the jumper, or enter Setup and change the video selection.
DISK BOOT FAILURE:
When you can‘t find the boot device, insert a system disk into Drive A and
press < Enter >. Make sure both the controller and cables are all in proper
positions, also make sure the disk is formatted correct device. Then reboot the
system.