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Maintenance
4-253160-A2-GB21-50 January 1997
Lamp Test
Use the Lamp Test commands to start and stop a test of
the DSU/CSU front panel LCD and LEDs.
Starting a Lamp Test
To start a Lamp test,
1. From the top-level menu screen, select Test.
2. From the Test screen, press the
key until the
Lamp selection appears on the screen.
3. From the Test screen, select Lamp.
F1
Test:
Lpbk Ptrns Lamp
F2
F3
4. From the Lamp Test screen, select Start.
F1
Lamp Test:
Abort Start
F2
F3
5. The following screens alternately appear on the
LCD until you press a Function key to return to
the Lamp Test screen. In addition, all LEDs blink.
F1 F2
F3
F1
0123456789 : ; < = > ?
@ABCDEFGHIJKLMNO
F2
F3
6. When you are satisfied that all LEDs are lighting
and the LCD is functioning properly, abort the
Lamp test from the Lamp Test screen. If there is
no activity on the DSU/CSU front panel for five
minutes, the Device Health and Status screen
appears automatically. However, the Lamp test
remains active until it is aborted.
Aborting a Lamp Test
To abort the Lamp test,
1. Display the Lamp Test screen. To do this when the
LCD is alternating the Lamp test screens, press
any Function key. Otherwise, follow Steps 1
through 3 for starting a Lamp test.
F1
Lamp Test:
Abort Start
F2
F3
2. From the Lamp Test screen, select Abort.
F1
Lamp Test:
Abort Start
F2
F3