Lenovo PC 300PL IBM PC 300PL (6565) User Guide (including system setup and opt - Page 128

Beep code 1-1-3 1-1-4 1-2-1 1-2-2 1-2-3 1-2-4 1-3-1 1-3-2 2-1-1 2-1-2 2-1-3 2-1-4 2-2-2 2-3-2 2-3-3 3-1-1 3-1-2 3-1-4 3-2-4 3-3-1 Probable cause CMOS write/read failure BIOS ROM checksum failure Programmable interval timer test failure DMA initialization failure DMA page register write/read test failure RAM refresh verification failure First 64 KB RAM test failure First 64 KB RAM parity test failure Secondary DMA register test in progress or failure Primary DMA register test in progress or failure Primary interrupt mask register test failure Secondary interrupt mask register test failure Keyboard controller test failure Screen memory test in progress or failure Screen retrace tests in progress or failure Timer tick interrupt failure Interval timer channel 2 test failure Time-of-day clock test failure Comparing CMOS memsize against actual Memory size mismatch occurred Device troubleshooting charts You can use the troubleshooting charts in this section to find solutions to problems that have definite symptoms. Important If you find it necessary to remove the computer cover, first read "Safety information" on page ix and "Removing the cover - desktop model" on page 64 or "Removing the cover - tower model" on page 68 for important safety information and instructions. 110 PC 300PL and PC 300GL User Guide