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Memory Checkout
DIMM are available for increasing memory capacity.
Memory errors might stop system operation, show error
messages on the screen, or hang the system.
Use the following procedure to isolate memory problems:
1. Boot from and start PC Doctor. (See “PC Doctor
System Diagnostics” on page 51 for details.)
2. Select Memory Test - Full and/or Memory Test -
Quick.
3. Follow the instructions in the message window.
Note: Make sure that the DIMM is properly installed into
the connector. A loose connection can cause an
error.
System Programs in Flash Memory: System
setup programs are stored in the flash memory.
Flash Memory Update: The flash memory update
is required for the following conditions:
New versions of system programs
New features or options
Slot 1 (MB)
Slot 2 (MB) Total Memory
(MB)
32 0 32
0 32 32
32 32 64
64 0 64
0 64 64
64 32 96
32 64 96
64 64 128
128 0 128
0 128 128
128 32 160
32 128 160
128 64 192
64 128 192
128 128 256
ThinkPad 390E 31