Mitel DBC224, Инструкция по применению, Страница: 107 / 115

M
I
V
OICE
4224 O
PERATOR
(DBC224)
FOR
M
I
V
OICE
MX-ONE
107 20/1553-ANF 901 54 Uen F3 2016-03-14
• Press the volume key - to reduce the contrast.
• Press the volume key + to increase the contrast.
The display shows how the contrast is changed. When the requested contrast is
shown:
• Press # to finish setting.
10.12 TELEPHONE SELF-TEST FUNCTION
The telephone has a self-test function to check the firmware, the key lamps, and the
display pixels. When making a self-test also the current firmware revision is displayed
for some seconds.
To make the self-test:
• Press ANS/EXT * 4 simultaneously for at least 1 second.
A tone signal is heard, all the key lamps shall be turned on, and during 5 seconds the
display shows (example):
The current or active firmware CAA 1580026 in the example has R-state R3G, and the
result of the self-test is OK.
After 5 seconds all the pixels of the display is turned on, that is, the whole pixel area
shall be dark.
• Press # to finish setting.