Acer Aspire X3400 Acer Aspire X3400, X3400G Desktop Service Guide - Page 66

Beep Codes Beep codes are used by the BIOS to indicate a serious or fatal error to the end user. Beep codes are used when an error occurs before the system video has been initialized. Beep codes will be generated by the system board speaker, commonly referred to as the PC speaker. AMIBIOS displays the checkpoints in the bottom right corner of the screen during POST. This display method is limited, since it only displays checkpoints that occur after the video card has been activated. Not all computers using AMIBIOS enable this feature. In most cases, a checkpoint card is the best tool for viewing AMIBIOS checkpoints. Beep Symptom One short beep Continuous one long beep One long beep and two short beeps then repeat. One long beep then two short beep Two short beeps Cause and Description System is ready. System is OK. Memory not installed or memory error. VGA not installed or VGA error. Graphics card error/not installed, graphics card memory error or graphics card BIOS checksum error. BIOS damaged. BIOS is damaged, BIOS POST jumps to Boot Block to execute the default procedures. CMOS damaged. CMOS checksum error or CMOS battery loss occurs. Boot Block Beep Codes Number of Beeps 1 2 3 4 5 7 10 11 12 13 Description No media present. Insert diskette in floppy drive A: 'AMIBOOT.ROM' file not found in root directory of diskette in A: Insert next diskette if multiple diskettes are used for recovery Flash Programming successful Floppy read error No Flash EPROM detected Flash Erase error Flash Program error 'AMIBOOT.ROM' file size error BIOS ROM image mismatch (file layout does not match image present in flash device) POST BIOS Beep Codes Number of Beeps 1 3 6 7 8 Description Memory refresh timer error. Base memory read/write test error Keyboard controller BAT command field General exception error (processor exception interrupt error) Display memory error (system video adapter) 58 Chapter 4