Lenovo ThinkPad 360 Hardware Maintenance Manual - Page 328

IC DRAM 0MB 2MB 4MB 8MB 16MB Displayed Value 7808KB 9856KB 11904KB 16000KB 24192KB DIMM 0MB 4MB 8MB 12MB 16MB 20MB 24MB 32MB Displayed Value 7808KB 11904KB 16000KB 20096KB 24192KB 28288KB 32384KB 40576KB Memory errors might 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. 1. Check whether or not the memory card use parity or non-parity. Note: Installing a non-parity memory card causes parity errors when parity checking is enabled. If the non-parity memory card is installed, disable the parity check through the Easy-Setup configuration screen. 2. Make sure that the memory card is fully seated in the connector. A loose connection can cause an error. 3. Power-off the computer and remove the IC DRAM card, or DIMM card from its slot (if installed). 4. Press and hold the F1 key; then power-on the computer. Hold the F1 key down until the Easy-Setup screen appears. 5. Select Test and press enter. 6. Select Memory and press enter to run the memory test on base memory. If an error appears, replace the memory card. 7. Power-off the computer and reinstall the IC DRAM card or 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. If memory problems occur intermittently, use the loop option to repeat the test. When the test detects an error, 318 IBM Mobile Systems HMM