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EXAMPLE 3

Note:

Error

messages

mayor

may

not

remain

screen.

So look quickly. X means any

number

will appear.

Illl~IIIIIIIIIIIIII~DI

Error messages

Likely problem

1 short beep

XXX

201

601

System Unit

131

Parity Check X

EXAMPLE 4

.ll~III1II1III1II~DI

Likely Problem

1 short beep

XXXX 301

Keyboard *

*Before having keyboard serviced:

• Position System Unit switch to OFF.

• Is keyboard plugged into cassette connector?

• Are there any obvious objects or foreign material on

keyboard?

after having keyboard serviced and error 301 still appears

have System Unit serviced.

PDPs

4-8

IBM 5150 User Manual

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