DP770 Digital Portable Radio Instruction Manual
34
10 Troubleshooting
No. Problem Causes and Solutions
1
The radio cannot
be powered on.
A．The battery may be used up. Recharge it or change the battery to try again.
B．The power ON/OFF key may suffer from poor contact. Clear the metal dome
with alcohol and try again.
C．The power binding post isn’t connected with battery. Re-install it and try
again.
D．The power is connected inversely which leads to the power protective tube
F901 open. Replace the protective tube F901 and try again.
2
You cannot
communicate with
other members
A．The frequency settings may be different from others. Set your TX/RX
frequencies to be the same as others.
B．The CTCSS/CDCSS signaling may be different from others. Set your
CTCSS/CDCSS signaling to be the same as others.
C．Your place may be too far away from the others, beyond the radio’s
coverage area.
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