Lenovo ThinkPad 370 Hardware Maintenance Manual - Page 139
SO-DIMMs, see FRU Removals and Replacements, See Printing
View all Lenovo ThinkPad 370 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 139 highlights
The following table shows the available memory on a system with an 8MB base memory with different sizes of SO-DIMM. SO-DIMM Installed None 4MB 8MB 16MB Total Memory 8MB 12MB 16MB 24MB Available Memory 7 808KB 11 904KB 16 000KB 24 192KB Memory errors might stop system operations or cause error codes to be displayed. Use the following procedure to isolate memory problems: Note: Make sure that the SO-DIMM is fully installed in the connector. A loose connection can cause an error. For more information about installing SO-DIMMs, see "FRU Removals and Replacements" on page 161. 1. Power-on the computer. Press the F1 key any time while the POST memory count is proceeding. At the end of the memory test, the Easy-Setup screen appears. 2. Select Test and press Enter. 3. Press Ctrl+A to enter advanced diagnostics. 4. Select Memory and press Enter to run the memory test on base memory. If an error appears below 3 712KB on a system with a 4MB base memory (7 808KB with an 8MB base memory), replace the bottom system board. If an error appears above 3 712KB on a system with 4MB base memory (7 808KB with an 8MB base memory), replace the SO-DIMM. 5. If after replacing the SO-DIMM, an error above 3 712KB on a system with a 4MB base memory or 7 808KB with an 8MB base memory still appears, replace the bottom system board. 6. To exit from the test screen, press Esc. If memory problems occur intermittently, use the loop option to repeat the test. For more information on running the loop test, see "Running the Diagnostics" on page 156. When the test detects an error, an error log is printed on the printer connected to the parallel port. See "Printing and Displaying Error Logs" on page 157 for more information. Do not replace FRUs because of a single, nonreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as electrostatic discharge or software errors. Consider replacing a FRU only when a recurring problem exists. If you suspect that problems besides a failing FRU exist, ThinkPad 701C/701CS (2630) 129