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47
Troubleshooting
N Monitor display
Problem Cause & Solution Page
The image of the subject is
displayed in black and white (or
bluish-purple), or the background
image appears greenish.
LAt night or when there is poor lighting in the doorway,
– the display will be shown in black and white (or bluish-
purple).
– If there is a light in the doorway, the image appears greenish.
These are not malfunctions.
―
The image of a person’s face is
dark.
LWhen there is a strong sunlight or a backlight in the place
where the door station is located, the person’s face becomes
dark.
– Locate the door station away from strong sunlight or
backlights.
– Adjust the brightness of the display. (The background image
will be shown in white.)
―
19
The image is not clear or is
blurry.
LThe surface or the lens of the door station is dirty. Clean it with
a soft dry cloth.
LThe surface or the lens of the door station is wet with dew. Wait
for the condensation to evaporate.
52
―
The image is white or black.
LThe brightness of the display is not properly adjusted. Adjust
the brightness while receiving a call, during a conversation, or
while monitoring.
19
The image is white, or white
lines or circles are shown on the
display.
LStrong light such as sunlight is shining into the lens of the door
station. Though this may cause the display image to become
diffi cult to see, this is not a malfunction.
– Locate the door station away from direct sunlight.
– The image quality may be better if the angle of the door
station is changed.
―
There is a small black dot in the
background.
LIf the sun can be seen, its center appears as a black dot. This
is not a malfunction.
―
The image is fl ickering.
LAC (alternating current) lights such as fl uorescent lights may
cause fl ickering in dark environments. This is not a malfunction.
―
The image displayed on the
sub monitor station distorts or
is displayed slowly. (It takes
5 seconds or more to be
displayed.)
LThe antenna on the sub monitor
station is being covered with your
hand. Do not cover it.
LThe sub monitor station is too far from the main monitor
station. Move closer to the main monitor station. If you install a
repeater (optional), the image may be improved.
LThere is an object such as a concrete wall obstructing the
signal. Move to a place without an obstacle. If you install a
repeater (optional), the image may be improved.
LA microwave or wireless LAN appliance is in use. Move closer
to the main monitor station or use a sub monitor station located
away from those appliances. Try again.
―
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Antenna