Lenovo ThinkPad 370 Hardware Maintenance Manual - Page 404

IC DRAM 0 MB 2 MB 4 MB 8 MB 16 MB Displayed Value 7808 KB 9856 KB 11904 KB 16000 KB 24192 KB DIMM 0 MB 4 MB 8 MB 12 MB 16 MB 20 MB 24 MB 32 MB Displayed Value 7808 KB 11904 KB 16000 KB 20096 KB 24192 KB 28288 KB 32384 KB 40576 KB Memory errors can stop system operations, show error messages on the screen, or hang the system. The computer detects memory parity errors but does not correct them. Use the following procedure to isolate memory problems. Notes: a. Except Model 755CX, installing a non-parity memory card causes memory errors. Before you go to the next procedure, check whether or not the memory card use parity or non-parity. If the non-parity memory card is installed, disable the parity check on the Easy-Setup configuration screen. b. Make sure that the memory card is fully installed into the connector. A loose connection can cause an error. 1. Power-off the computer and remove the IC DRAM card, or DIMM card from its slot (if installed). 2. Press and hold the F1 key; then power-on the computer. Hold the F1 key down until the Easy-Setup screen appears. 3. Select Test and press enter. 4. Select Memory and press enter to run the memory test on base memory. If an error appears, replace the memory card. 5. Power-off the computer and reinstall the IC DRAM card or the DIMM card; then power-on the computer. Verify the memory size; then test the memory. If an error appears, replace the IC DRAM card or the DIMM card. 394 IBM Mobile Systems HMM