Hytera PS22002 - Troubleshooting

Switching Power Supply
6
Troubleshooting
Phenomena Analysis Solution
The LED does
not illuminate.
The mains supply fails. Restore the mains supply.
The power cord is not
connected properly.
Connect the AC power cord
properly.
In mains supply mode, the
fuse of AC power port is
damaged.
Replace the fuse (5A/250V
5X20mm).
In battery mode, the battery
is not connected correctly.
Connect the backup battery
correctly.
In battery mode, the battery
does not work normally.
Replace the battery.
Red LED
glows.
In battery mode, the battery
runs low.
Restore the mains supply or
replace the battery.
The fuse of AC power port
is blown.
Replace the fuse.
In battery mode, the battery
voltage is less than 10.8V.
Replace the battery.
In battery mode, the battery
voltage is above 10.8V
while its capacity is small.
Replace the battery.
In battery mode, big current
causes the battery voltage
to fall below 10.8V.
Replace the battery.
Overload or short circuit.
Diagnose the failure and
settle the trouble.
The battery is damaged or
its life expires.
Replace the battery.
The relay is locked.
1.Restore the mains supply.
2.Connect the battery again
and replace the battery.
Abnormal
sound is heard.
The relay is switching
constantly.
Check that the output is
overloaded.