Acer X1200 ED5200A - Aspire Service Manual

Contents

Chapter 4 61POST Error and Beep CodesNOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRUreplacement does not solve the problem, put the original part back in the computer. Do not replace anon-defective FRU.The error messages in the following table indicate the BIOS signals on the screen and the error symptomsclassified by functions. If the symptom is not included on the list, please refer to “Undetermined Problems”.NOTE: Most of the error messages occur during POST. Some of them display information about a hardwaredevice, e.g., the amount of memory installed. Others may indicate a problem with a device, such as theway it has been configured.NOTE: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enterSetup and install Setup defaults or correct the error.POST Code (Hex) POST Routine DescriptionCFh Test CMOS R/W functionalityC0h Early chipset initializationT Disable shadow RAMT Disable L2 cache (socket 7 or below)T Program basic chipset registersC1h Detect memoryT Auto-detection of DRAM size, type, and ECCT Auto-detection of L2 cache (socket 7 or below)C3h Expand compressed BIOS code to DRAMC5h Call chipset hook to copy BIOS back to E000 and F000 shadow RAM01h Expand the X group codes locating in physical address 1000:002h Reserved03h Initial Superio_Earl_Init switch04h Reserved05h 1 Blank out screen2 Clear CMOS error flag06h Reserved07h 1 Clear 8042 interface2 Initialize 8042 self-test08h 1 Test special keyboard controller for Winbond 977 series Super I/O chips2 Enabled keyboard interface09h Reserved0Ah 1 Disable PS/2 mouse interface (optional)2 Auto detect ports for keyboard and mouse followed by a port and interface swap(optional)3 Reset keyboard for Winbond 977 series Super I/O chops0Bh Reserved0Ch Reserved0Dh Reserved0Eh Test F000h segment shadow to see whether it is rewritable or not. If test fails, keepbeeping the speaker.0Fh Reserved10h Auto detect flash type to load appropriate flash rewritable codes into the run timearea in F000 for ESCD & DMI support.11h Reserved