Message/Symptom

FRU/Action

 

 

 

Serial or parallel port device failure (adapter port)

1.

External Device Self-Test OK?

 

2.

External Device

 

3.

Cable

 

4.

Alternate Adapter

 

5.

System Board

 

 

Some or all keys on the keyboard do not work

1. Keyboard

 

2.

Keyboard Cable

 

3.

System Board

 

 

 

Undetermined problems

This section provides instructions on how to find out the failing devices or adapters.

1.Power-off the computer.

2.Remove or disconnect the following components (if installed) one at a time.

a.External devices (modem, printer, or mouse)

b.Any adapters

c.Memory modules

d.Extended video memory

e.External Cache

f.External Cache RAM

g.Hard disk drive

h.Diskette drive

3.Power-on the computer to re-test the system.

4.Repeat steps 1 through 3 until you find the failing device or adapter.

If all devices and adapters have been removed, and the problem continues, replace the system board.

Chapter 7. Symptom-to-FRU Index 63

Page 67
Image 67
Lenovo 10BL, E73Z manual Undetermined problems