Lenovo ThinkPad 380ED TP 380Z Hardware Maintenance Manual (August 1998) for us - Page 14

Memory Checkout, Auxiliary Input Devices

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Warning: Do not replace a nondefective FRU. Reseat the keyboard cables. Replace the DC/DC card. Replace the system board. Auxiliary Input Devices: The following auxiliary input devices are supported: 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 remains, replace the device, and then the system board. Memory Checkout DIMMs are available for increasing memory capacity. DIMM No DIMM installed 16 MB 32 MB 64 MB Displayed Value 32192 KB 48576 KB 64960 KB 97728 KB Memory errors may cause error messages to appear on the screen or may hang the operating system. Take the following procedure to isolate memory problems: 1. Turn off the computer and remove any installed DIMM from the slot. 2. Press and hold the F1 key; then turn on the computer. Hold the F1 key down until the Easy-Setup menu appears. 3. Select Test and press Enter. 4. Select Memory and press Enter to run the memory test for the base memory. If an error appears, replace the system board. 5. Turn off the computer and reinstall the DIMM; then turn on the computer. Verify the memory size; then test the memory. If an error message appears, replace the DIMM. If a memory problem occur intermittently, perform the loop option test. If the test detects an error, it prints an error log on a printer connected to the parallel port. See "Displaying the Error Log" on page 35 for more information. Flash Memory Update: System setup programs and diagnostic tests are stored in the flash memory. A flash memory update is required when: A new version of the system program is installed. 12

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Warning
: Do not replace a nondefective FRU.
Reseat the keyboard cables.
Replace the DC/DC card.
Replace the system board.
Auxiliary Input Devices:
The following auxiliary
input devices are supported:
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 remains, replace the device, and then the
system board.
Memory Checkout
DIMMs are available for increasing memory capacity.
Memory errors may cause error messages to appear on
the screen or may hang the operating system.
Take the following procedure to isolate memory problems:
1.
Turn off the computer and remove any installed DIMM
from the slot.
2.
Press and hold the
F1
key; then turn on the
computer.
Hold the
F1
key down until the
Easy-Setup menu appears.
3.
Select
Test
and press
Enter
.
4.
Select
Memory
and press
Enter
to run the memory
test for the base memory.
If an error appears,
replace the system board.
5.
Turn off the computer and reinstall the DIMM; then
turn on the computer.
Verify the memory size; then
test the memory.
If an error message appears,
replace the DIMM.
If a memory problem occur intermittently, perform the loop
option test.
If the test detects an error, it prints an error
log on a printer connected to the parallel port.
See
“Displaying the Error Log” on page
35 for more
information.
Flash Memory Update:
System setup programs and
diagnostic tests are stored in the flash memory.
A flash
memory update is required when:
A new version of the system program is installed.
DIMM
Displayed Value
No DIMM installed
32192 KB
16 MB
48576 KB
32 MB
64960 KB
64 MB
97728 KB
12