JOIWO JWAT306, Руководство пользователя

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6
Failure phenomenon Troubleshooting method Approach
No effect on keyboard,
no sound on handset
Check if the telephone line is
connected to the motherboard. Use a
multimeter to measure whether the
voltage at both ends is 48V.
Reconnect the unconnected phone line
Some keys on the
keyboard have no
effect
Check if the cable between keyboard and
motherboard is loose Plug the keyboard cable back into the
motherboard and plug it into place
sound from handset
Check if the connecting cable between
the handle and the motherboard is loose Plug the handle wire back into the
motherboard and plug it into place
No sound from PA
1. Check whether the 220V power supply
is supplying power or the line is not
connected well.
2. Check if the cable between the phone
and the speaker is well connected
3. Check if the speaker is damaged
1. Handle the missed line and provide
220V power to the phone.
2. Reconnect the line between the phone
and the speaker
3. Replace the speaker