Hytera VM780 - Troubleshooting

49
10. Troubleshooting
Phenomena
Analysis
Solution
The product cannot be
turned on
The battery may be improperly
attached.
Remove the battery and attach it
again.
The battery may run out.
Recharge or replace the battery.
The battery and the charging
probes are in poor contact due to
dirtied or damaged battery
contacts.
Clean the battery contacts.
The volume is low
when playing back
audios or videos
The microphone and the speaker
are blocked or damaged.
Clean the microphone and the
speaker.
The product cannot
record video or audio.
The TF card is full.
Switch to disk mode, and delete all
data from the TF card after exporting
them.
The product cannot
take photo.
The product cannot
pre-record or
extend-record the
video
.
The pre- or extend-recording
feature is not enabled.
Enable the feature.
The product does not
turn on the IR LED
automatically when
recording video in dark
environment.
The IR LED feature is not enabled. Enable the IR LED feature.
The product gives no
alert tone; the indicator
does not light up.
The Silent Mode is enabled. Disable the Silent Mode.
The product gives no
response to operations.
The product has crashed.
Press the
Power On/Off
key for 10
seconds to forcibly turn the product