Post Error Indicators - Acer Aspire X1920 Service Manual

Checkpoint
38
ACPI Runtime Checkpoints
Checkpoint
AC
AA
01, 02, 03, 04, 05
10, 20, 30, 40, 50

POST Error Indicators

When a system error is detected during POST (Power On Self Text), the Setup utility will switch to diagnostic
mode and will either:
• Displays a POST error message, or
• Emits a series of beep codes
POST Error Messages
POST error messages tell users what failure the system has detected. Some error messages could be related
to a hardware device. Others may indicate a problem with a device configuration. In some cases an error
message may include recommendations for troubleshooting or require that you press the Enter key to display
recommendations. Follow the instructions on the screen. It is recommended that you correct the error before
proceeding, even if the computer appears to boot successfully.
IMPORTANT If your system fails after you make changes in the Setup menus, reboot the computer, enter
Setup again and load Setup defaults to correct the error.
50
Description
Initialize different buses and perform the following functions: Boot Input Device
Initialization (function 3); IPL Device Initialization (function 4); General Device Initialization
(function 5). Function 3 searches for and configures PCI input devices and detects if
system has standard keyboard controller. Function 4 searches for and configures all PnP
and PCI boot devices. Function 5 configures all onboard peripherals that are set to an
automatic configuration and configures all remaining PnP and PCI devices.
Description
First ASL check point. Indicates the system is running in ACPI mode.
System is running in APIC mode
Entering sleep state S1, S2, S3, S4, or S5.
Waking from sleep state S1, S2, S3, S4, or S5
Aspire AX1920 Service Guide