RDI Technology Co. Ltd. M420 用户手册

38

Problem

Solution

No video displayed on 
the monitor

t Press and hold the 

button for 3 seconds to power 
on the monitor.

t Monitor is out of batteries. Plug 

in the monitor power adapter.

t Video Off mode is on. Press 

any button to turn the screen 
back on.

t Power save mode is on. Press 

any button to turn the screen 
back on.

t If none of the solutions above 

work, press the Reset button on 
the back of the monitor.

Monitor screen keeps 
turning off

t The monitor battery is low. Plug 

in the monitor power adapter.

t Power save mode is on. Press 

any button to turn the screen 
back on.

The camera is not 
detected; “Out of Range” 
is shown on the monitor

t Make sure the camera is 

powered on.

t The camera and monitor may 

be out of range. Extend the 
antennas on the monitor and 
camera or move the monitor 
and camera closer together.

t You may need to pair the 

camera and the monitor 
again. See “Pairing Additional 
Cameras” on page 34 for 
details.

t Wrong channel selected. 

Press

 repeatedly to select 

a channel with a camera 
connected to it.

Feedback / squealing 
noise coming from the 
monitor

t Your camera and monitor may 

be too close to each other.
Move them further apart.

t Lower the monitor volume.

Touch buttons on the 
monitor aren’t working

t Press the Lock button (

) on 

the side of the monitor to unlock 
the touch buttons.

Display is frozen

t Press the Reset button on the 

back of the monitor to reboot. 
Settings and saved files are 
unaffected.

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