Lenovo ThinkPad 560Z TP 560Z Hardware Maintenance Manual for use by Authorized - Page 14
Memory Checkout, Mouse PS/2 compatible
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Keyboard Test for the internal keyboard. See "Running the Diagnostics" on page 33 for details. Note: When the Fn key is pressed, a black square briefly appears. If the Keyboard Test detects a keyboard problem, do the following one at a time to correct the problem. Do not replace a nondefective FRU: Replace the flexible keyboard cable. Replace the keyboard. Replace the system board. The following auxiliary input devices are supported for this computer: Numeric keypad Mouse (PS/2 compatible) External keyboard (with keyboard/mouse cable) If any of these devices do not work, reseat the cable connector and repeat the failing operation. If the problem does not recur, the problem may have been in the connector. Recheck the connector. If the problem is not corrected, replace the device and then the system board. Memory Checkout EDO DIMM cards are available for increasing the memory capacity. DIMM No DIMM card installed 8 MB (not supported by 560Z) 16 MB 32 MB 64 MB Displayed Value (32MB Base) 32192 KB 40384 KB Displayed Value (64MB Base) 64960 KB 73152 KB 48576 KB 64960 KB 97728 KB 81344 KB 97728 KB 130496 KB Memory errors might stop system operations, show error messages on the screen, or hang the system. Use the following procedure to isolate memory problems. Note: Make sure that the DIMM card is fully installed into the connector. A loose connection can cause an error. See "Running the Diagnostics" on page 33 for details. 1. Power off the computer and remove the DIMM card from its slot (if installed). 12