Power-On Self-Test (Post) Error Message; Index Of Error Messages - AOpen OpenBook 1556 Service Manual

Power-On Self-Test (POST) Error Message

The POST error message index lists the error message and their possible causes. The most likely cause is
listed first.
NOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU
replacement does not solve the problem, put the original part back in the computer. Do not replace a
non-defective FRU.
This index can also help you determine the next possible FRU to be replaced when servicing a computer.
If the symptom is not listed, see "Undetermined Problems" on page 95.
The following lists the error messages that the BIOS displays on the screen and the error symptoms classified
by function.
NOTE: Most of the error messages occur during POST. Some of them display information about a hardware
device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the
way it has been configured.
NOTE: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enter
Setup and install Setup defaults or correct the error.

Index of Error Messages

Error Message List
Error Messages
Failure Fixed Disk
Keyboard locked - Unlock key switch
Monitor type does not match CMOS - Run Setup Run "Load Default Settings" in BIOS Setup Utility.
Shadow RAM Failed at offset: nnnn
System RAM Failed at offset: nnnn
Extended RAM Failed at offset: nnnn
System battery is dead - Replace and run Setup
System CMOS checksum bad - Default
configuration used
System timer error
Real time clock error
Previous boot incomplete - Default configuration
used
Chapter 4
FRU/Action in Sequence
Reconnect hard disk drive connector.
"Load Default Settings" in BIOS Setup Utility.
Hard disk drive
Main Board
Unlock external keyboard
BIOS ROM
Main Board
DIMM
Main Board
DIMM
Main Board
Replace RTC battery and Run BIOS Setup Utility to reconfigure
system time, then reboot system.
RTC battery
Run BIOS Setup Utility to reconfigure system time, then reboot
system.
RTC battery
Run BIOS Setup Utility to reconfigure system time, then reboot
system.
Main Board
RTC battery
Run BIOS Setup Utility to reconfigure system time, then reboot
system.
Main Board
Run "Load Default Settings" in BIOS Setup Utility.
RTC battery
Main Board
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