IBM 2142, 2140 manual SelectDiagnostics, SelectInteractive Tests

(continued)

004(continued) Replace the monitor.

005

Check

the

monitor

I/O

signal

cable.

Replace

if

defective.

–

or

–

Replace

the

system

board.

006

(From

step

002)

– Power-off

the

system

unit

and monitor.

– Unplug

the

monitor

I/O

signal

cable from the system unit.

– Power-on

the

system

unit

and

monitor.

DOES

THE SCREEN

CHANGE FROM BLACK (WITH MONITOR

POWER-OFF)

TO

THE

APPROPRIATE

RASTER

OR

WHITE

SCREEN AS

DESCRIBED

IN

THE

DISPLAY

SELF

TEST?

Yes

No

007

– Replace

the

monitor.

008

– Power-off

the

system

unit.

– Reconnect

any

disconnected

cables.

– Power-on

the

system

unit.

IS

THE

SCREEN

READABLE?

Note:

If

the

screen

shows

a

blinking

cursor

with

no memory count running,

answer

this

question

“No.”

Yes

No

009

– Replace

the

system

board

010

–PressEsc .

– SelectDiagnostics		from	the	Main	Menu.
– SelectInteractive Tests			from	the	menu.
– SelectVideo	from	the	menu.
(Step 010 continues)

2-54