Message/Symptom

FRU/Action

 

 

 

Some or all keys on the keyboard do not

1.

Keyboard

work

2.

Keyboard Cable

 

 

3.

System Board

 

 

 

Undetermined problems

Check the power supply voltages (see “Power Supply Errors” on page 71). If the voltages are correct, return here and continue with the following steps.

1.Power-off the computer.

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

a.Non-IBM devices

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

c.Any adapters

d.Riser card

e.Memory modules

f.Extended video memory

g.External Cache

h.External Cache RAM

i.Hard disk drive

j.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 (see “Replacing a System Board - Small Desktop Model” on page 60, “Replacing a System Board - Desktop Model” on page 62, or “Replacing a system board - Microtower Model” on page 65).

Chapter 6. Symptom-to-FRU Index 109

Page 117
Image 117
IBM 6337, 6348, 6342, 6339, 6346, 6341, 2257, 2256, 2254, 6347, 6336 manual Undetermined problems, Keyboard

6339, 6337, 6342, 6341, 6336 specifications

IBM's 6348, 6346, 6347, 2254, and 2257 models are part of the company's extensive portfolio of enterprise-level computing solutions, designed to enhance performance and efficiency for businesses.

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