Testing The Telephone Display - Northern Telecom Compact ICS 4.0 Manual

212 / Troubleshooting
Tip -
label by pressing
see its function.
You can end the telephone testing session anytime by
pressing
buttons. The test feature times-out after 30 minutes of no
activity.

Testing the telephone display

Use a display test if you suspect that one of the indicators on
the telephone is not working.
ƒ°‚fi
1. Press
test
.
TEST
2. Press
3. Adjust the contrast for the telephone display so you are
able to see the test results clearly. Enter a number to
change the contrast or press
OK
4. Press
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 be
completely lit. You lose any information that was showing on
the BLF before the test started.
Pressing any button ends the test.
Compact ICS 4.0 System Coordinator Guide
ƒ•‚
Ensure that the function of a button matches its
® ƒ
or
˙
or
˙
or to go ahead with the test.
and then the button to
unless you are testing those
. The display reads
to go ahead with a display test.
DOWN UP
and .
Display
P0881596 Issue 02