System Maintenance Manual
Terminal Test Routine – DT400
The following procedure will help you determine if a problem being experienced is due to the telephone or
the system.
Testing the operation of a system phone allows you to check the lamping of each key, the display, and
tones.
Follow the procedure below to determine if the phone is operating correctly.
Key Matrix and LED Test
1. Unplug the phone from the socket/line cord
2. While holding down dial pad digits 1, 2 and 3, plug the phone back in.
3. Hold down the 1, 2 and 3 digits for approximately 10 seconds then release them.
If the phone doesn’t show “Initialize” on the display, then repeat Steps 1-3 and hold the keys down a few
seconds longer.
Press any key and its Logical Name should be displayed.
Note – each terminal model will have different display layout and keys available to test.
SIDE [ NO CONNECT ]
Bottom [ NO CONNECT ]
PUSH=Kxx = the key you have pressed, refer to the table below
Main = Terminal firmware version
LCD = Terminal LCD revision
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