Lenovo ThinkPad 390E ThinkPad 390 / i Series 1720 models Hardware Maintenance - Page 36

Modem Board Checkout, Power System Checkout, System Programs in Flash Memory, Flash Memory Update

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Slot 1 (MB) 64 128 0 128 32 128 64 128 Slot 2 (MB) 64 0 128 32 128 64 128 128 Total Memory (MB) 128 128 128 160 160 192 192 256 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: The flash memory update is required for the following conditions: New versions of system programs New features or options 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 computer 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

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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:
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)
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