Kirisun FM540, Инструкция по эксплуатации, Страница: 33 / 36

FM540 Mobile Radio Instruction Manual
26
7 Trouble shooting
The following table shows some FAQ of operations. These problems are caused by improper
operation instead of circuit failure. Before identifying the mobile problems, please check the
following table or contact your local distributor.
Trouble Analysis Solution
After connecting to
13.8V power supply
and when the
power-on button is
pressed, the mobile
cannot be switched on
or no screen display.
The power cable is
reversely connected.
Connect the DC power supply cables
properly: Red is positive po),black is
negative polarity(-).
。
One or more fuse of
the power cable
is/are blown off. Figure out the reason of the blowout. After
checking and solving the problem, replace a
new fuse of the same rating for the cable.
After selecting high
brightness, the screen
is still dim.
Power supply voltage
is too low.
Power supply voltage is required to be
13.8V DC (from 11.7V to 15.8V),If the input
voltage exceeds this range, adjust the
regulated power supply device and make
sure all the power supply cables are well
connected.