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9. MAINTENANCE
9.1 Trouble Shooting
NO. Problem
Possible Causes and Potential
Solutions
1
Power is on, nothing
appears on Display
+ and - polarities of power connection
are reversed. Connect red lead to
plus terminal and black lead to minus
terminal of DC power supply.
2 Fuse is blown
Check and solve problem resulting in
blown fuse and replace fuse with new
fuse.
3
No sound comes from
speaker.
•Squelch is muted. Decrease squelch
level.
•Tone or CTCSS/DCS squelch is active.
Turn CTCSS or DCS squelch
off
4
Key and Dial do not
function
Key-lock function is activated. Cancel
Key-lock function
5 No Scan
Did not list the channel in the scan
when programmed.
6
The whole band
with noise after
programmed
The squelch has opened during
programmed
7
Communication
range was short, bad
sensitivity
a. Check the antenna is well or not, and
check the antenna port whether well
connected.
b. Antenna connector has debris or
damaged. Whether set Low power
8
Can not talk with other
members within the
group
a. Frequency/channel different, pls
modify
b. CTCSS/DCS different, pls reset
c. Out of the communication range
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