Help
48
Problem
Cause & Solution
Page
There is a small black dot in the
background.
L
If the sun can be seen, its center appears as a black dot. This
is not a malfunction.
―
The image is flickering.
L
AC (alternating current) lights such as fluorescent lights may
cause flickering 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.)
L
The antenna on the sub monitor
station is being covered with your
hand. Do not cover it.
L
The 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.
L
There 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.
L
A 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.
―
7, 45
7, 45
7
The recorded image quality is
lower.
L
The image quality of “8 PICTURES” is lower than “1
PICTURE”. Change the setting of “DOOR STATION PIC REC
NUMBER” to “1 PICTURE” using the main monitor station if
higher quality is required.
37
The recording date and time are
not displayed while viewing the
image.
L
The date and time are not set. Set the current date and time
using the main monitor station.
17
The recorded image taken at
night is dark.
L
It takes some time to display the image from the door station
taken at night. Therefore, the auto recording may start before
the image can be displayed. Change the setting of “PICTURE
RECORD TIMING” to “DELAYED”.
37
N
Conversation (Doorphone/Intercom)
Problem
Cause & Solution
Page
Sound cuts in/out or fades.
L
The surroundings of the main monitor station, the sub monitor
station or the door station are noisy. Try “Press-to-talk” mode.
L
The antenna on the sub monitor
station is being covered with your
hand. Do not cover it.
L
The 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 sound may be improved.
L
There 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 sound may be improved.
L
A 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.
20
―
7, 45
7, 45
7
Antenna
Antenna
SW251BX_OI.indb 48
9/17/2014 11:05:15 AM
