IBM 2142, 2140 manual Display Self Test

Display Self Test

Be	sure	the	monitor has		been	turned	on for approximately 5 minutes before
you	start the Display Self Test.
Run	the	test	as	follows:
1. Power-off			the	system	unit and monitor.
2.	Disconnect		the	monitor	signal	cable	from the system unit.

3. Power-on the monitor.

4. If	the	monitor power-on LED is not	lit	or flashing, or you do not see one
of	the	indications below, replace	the	monitor.

For MM55, Type 2116 monitors:

The Red/Green/Blue raster will display.

The Green LED will be on solid.

For MM75, Type 2128 monitors:

The screen will be full white.

The orange LED will be on solid.

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