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 the diagnostics diskette and start the PQA
program (please refer to “PQA System Diagnostics”
on page 42).
2. Go to Memory in the test items.
3. Press F2 in the test items.
4. 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: Theflash 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)
64 64 128
128 0 128
0 128 128
128 32 160
32 128 160
128 64 192
64 128 192
128 128 256
Modem Board Checkout
Do the following to isolate the problem to the system
internal modem:
1. Go to the Startup menu by selecting Modem Dial
and Data Transfer in the diagnostics diskette.
2. Follow the instructions in the message window.
3. If the test detects a modem problem, replace the
modem card.
Power System Checkout
To verify the symptom of the problem power on the com-
puter using each of the following power sources:
1. Remove the battery ASM.
2. Connect the AC Adapter and check that power is sup-
plied.
28 ThinkPad 390/i Series 1700