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146 / Troubleshooting
Norstar-PLUS Modular ICS 2.0 System Coordinator Guide P0857846 Issue 02
Testing the telephone display
Use a display test if you suspect that one of the indicators on the
telephone is not working.
• Press
.
The display shows Display test.
• Press TEST or to go ahead with a display test.
• Adjust the contrast for the telephone display so you will be able
to see the test results clearly. Enter a number to change the
contrast or press DOWN and UP.
• Press OK or to go ahead with the test.
During the test, the display should be filled with solid, dark blocks
and all the indicators next to the buttons on the telephone should be
turned on. Any Busy Lamp Field (BLF) or CAP modules that are
attached to the telephone should also be completely lit. You will lose
any information that was showing on the BLF before the test started.
Pressing any button ends the test.
Testing the telephone buttons
• Press , then or NEXT.
• Press TEST or to go ahead with a button test.
• Press button to see its function. If the button you pressed uses
an indicator, it should also turn on when you test the button.
• Pressing the button puts Rls button on the display briefly
and returns you to the Button test display.
Testing the speaker in the telephone handset
The handset test is not available if you have a headset plugged into
the telephone.
• Press , then or NEXT twice. The display
shows Handset test.
• Press TEST or to go ahead with a handset test.
• Pick up the handset and listen. You should hear dial tone
through the handset at a maximum volume. The volume is reset
to maximum only while the test is going on.