Symptoms(Verified) Goto
Powerfailure. (The power-on
indicatordoes not go on or stay
on.)
“PowerSystem Checkout”on
page14, then use table in
“Power-RelatedSymptoms”on
page23.
POSTdoes not complete. No
beepsor error codes/messages
areindicated.
“Symptom-to-FRUIndex”on
page19, then use table in “No
BeepSymptoms”on page22.
POSTbeeps, but no error
codesare displayed.
“Symptom-to-FRUIndex”on
page19.
POSTdetected an error and
displayednumeric error codes.
“Symptom-to-FRUIndex”on
page19, then use table in
“NumericError Codes”on
page19.
Thediagnostic test detected an
errorand displayed a FRU
code.
“Runningthe Diagnostics”on
page27.
Othersymptoms (such as LCD
displayproblems).
“Symptom-to-FRUIndex”on
page19.
Symptomscannot be recreated
(intermittentproblems).
Usethe customer-reported
symptoms,and go to
“Symptom-to-FRUIndex”on
page19.
Testing the computer
The ThinkPad computer has a test program called
PC-Doctor for DOS (hereafter called PC-Doctor). Youcan
detect errors by running the diagnostics test of PC-Doctor.
This section is an overview on detecting the problem.
Torun the test, do the following:
Note: In the following procedure, you can select an item
not only with the arrow keys, but also with the
TrackPoint.Instead of pressing Enter, you can also
click the left click button.
1. Connect the USB diskette drive to the computer.
2. Insert the PC-Doctor DOS Disk into the diskette drive;
then power on the computer.
If the computer cannot be powered on, go to “Power
System Checkout”on page14 and check the power
sources.
If an error code appears, go to “Symptom-to-FRU
Index”on page 19.
The PC-Doctor main panel appears.
3. Select Diagnostics with the arrow keys, and press
Enter.
Apull-down menu appears:
10 ThinkPad s30, s31