Sharing New Technology with You
57
8 Troubleshooting
Fault Solution
No dialing tone after off-hook
Hook on, and then hook off or
press
HANDFREE
key
No response in the key system
interface (after several attempts)
Power off and then on once
Incorrect display of system time
Check whether the antenna is
connected correctly and whether
the system signal is too weak
No display in the system interface
after disconnecting the external
power adapter
Check whether the battery has
electricity, or check whether the
battery is damaged, or power on the
phone again
No display in the system interface
after power-on
Check whether the power adapter is
well connected, or check whether
the battery has electricity, and then
connect the power adapter or
battery reliably