Lenovo ThinkPad 380ED TP 380Z Hardware Maintenance Manual (August 1998) for us - Page 11

Checkout Guide, Power failure.

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Checkout Guide Use the following procedure as a guide for computer problems. Note: The diagnostic tests are intended to test only IBM products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses. 1. Obtain the symptoms in detail. 2. Verify the symptoms by running the diagnostic test to re-create the same error or by repeating the same operation. Note: To run the diagnostic test, refer to "Running the Diagnostics" on page 34. If the symptoms occur at irregular intervals and cannot be re-created (and therefore cannot be verified), go to "Symptom-to-FRU Index" on page 23; then go to "Intermittent Problems" on page 32. 3. Match the verified symptoms with the following table and determine the page to go to. Verified Symptoms Power failure. (The power indicator does not go on or stay on.) POST does not complete. No beeps or error codes are displayed. The configuration is not the same as the installed devices. POST beeps, but no error codes are displayed. POST detected an error and displayed numeric error codes. The diagnostic test detected an error and displayed a FRU code. Go To "Power Systems Checkout" on page 13. "Symptom-to-FRU Index" on page 23, and then go to "No Beep Symptoms" on page 28. "Checking the Installed Devices List" on page 35. "Symptom-to-FRU Index" on page 23, and then go to "Beep Symptoms" on page 28. "Symptom-to-FRU Index" on page 23, and then go to "Numeric Error Codes" on page 23. "FRU Codes" on page 38. ThinkPad 380Z 9

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Checkout Guide
Use the following procedure as a guide for computer
problems.
Note:
The diagnostic tests are intended to test only IBM
products.
Non-IBM products, prototype cards, or
modified options can give false errors and invalid
system responses.
1.
Obtain the symptoms in detail.
2.
Verify the symptoms by running the diagnostic test to
re-create the same error or by repeating the same
operation.
Note:
To run the diagnostic test, refer to “Running
the Diagnostics” on page
34.
If the symptoms occur at irregular intervals
and cannot be re-created (and therefore
cannot be verified), go to “Symptom-to-FRU
Index” on page
23; then go to “Intermittent
Problems” on page
32.
3.
Match the verified symptoms with the following table
and determine the page to go to.
Verified Symptoms
Go To
Power failure. (The
power indicator does not
go on or stay on.)
“Power Systems
Checkout” on page
13.
POST does not
complete.
No beeps or
error codes are
displayed.
“Symptom-to-FRU
Index” on page
23, and
then go to “No Beep
Symptoms” on page
28.
The configuration is not
the same as the
installed devices.
“Checking the Installed
Devices List” on
page 35.
POST beeps, but no
error codes are
displayed.
“Symptom-to-FRU
Index” on page
23, and
then go to “Beep
Symptoms” on page
28.
POST detected an error
and displayed numeric
error codes.
“Symptom-to-FRU
Index” on page
23, and
then go to “Numeric
Error Codes” on
page 23.
The diagnostic test
detected an error and
displayed a FRU code.
“FRU Codes” on
page 38.
ThinkPad 380Z
9