Lenovo ThinkPad 560E ThinkPad 560X Hardware Maintenance Manual (Oct 1997) - Page 38

Memory Checkout, System Programs in Flash Memory

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Note: When the Fn key is pressed, a black square briefly appears. If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a nondefective FRU: Reseat the 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, recheck the connector. If the problem is not corrected, replace the device and then the system board. Memory Checkout DIMM cards are available for increasing memory capacity. DIMM No DIMM installed 8 MB 16 MB 32 MB 64 MB Displayed Value 32192 KB 40384 KB 48576 KB 64960 KB 97728 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 is fully installed into the connector. A loose connection can cause an error. See "Running the Diagnostics" on page 47 for details. If memory problems occur intermittently, use the loop option to repeat the test. When the test detects an error, an error log is printed on the printer connected to the parallel port. See "Displaying the Error Log" on page 48 for more information. System Programs in Flash Memory: System setup programs and diagnostic tests are stored in the flash memory. 28 IBM ThinkPad 560X (2640-60x, 70x) HMM

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Note:
When the
Fn
key is pressed, a black square briefly
appears.
If the tests detect a keyboard problem, do the following
one at a time to correct the problem.
Do not replace a
nondefective FRU:
±
Reseat the 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, recheck the connector.
If the problem is not corrected, replace the device and then
the system board.
Memory Checkout
DIMM cards are available for increasing memory capacity.
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 is fully installed into the
connector.
A loose connection can cause an error.
See “Running the Diagnostics” on page
47 for details.
If memory problems occur intermittently, use the loop
option to repeat the test.
When the test detects an error,
an error log is printed on the printer connected to the
parallel port.
See “Displaying the Error Log” on page
48
for more information.
System Programs in Flash Memory:
System setup
programs and diagnostic tests are stored in the flash
memory.
DIMM
Displayed Value
No DIMM installed
32192 KB
8 MB
40384 KB
16 MB
48576 KB
32 MB
64960 KB
64 MB
97728 KB
28
IBM ThinkPad 560X (2640-60x, 70x) HMM