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If you still have difficulties after following the instructions in this section, disconnect the base unit's AC adaptor, then reconnect the base unit's AC adaptor. Remove the batteries from the handset, and then insert them into the handset again.
If the base unit batteries for power backup are installed, remove the batteries from the base unit, and then insert them into the base unit again.
Problem | Cause/solution |
The handset does not turn on even after installing charged batteries. |
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The unit does not work. |
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I cannot hear a dial tone. |
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The indicator on the handset or base unit flashes slowly. |
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The base unit beeps. |
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The unit does not work during a power failure. |
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Problem | Cause/solution |
I cannot search the phonebook, caller list, redial list, memory dial, or call block list. |
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The unit does not announce names or phone numbers when I search the phonebook, caller list, etc. |
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The announcement is too low to be heard. |
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I cannot use the slow talk feature. |
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When using a neckloop, whistling or feedback is heard, or the other party cannot hear your voice. |
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When using a headset, the other party says that your voice is very quiet or sounds far away. |
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When using a neckloop with a built-in microphone, the other party says that your voice is very quiet or sounds far away. |
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Problem | Cause/solution |
I cannot register a handset to a base unit. |
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Problem | Cause/solution |
The handset beeps and/or ![]() |
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I fully charged the batteries, but
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Problem | Cause/solution |
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Noise is heard, sound cuts in and out. |
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The handset does not ring. |
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The base unit does not ring. |
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I cannot make a call. |
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Problem | Cause/solution |
Caller information is not displayed. |
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Caller information is displayed or announced late. |
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Caller information is not announced. |
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Time on the unit has shifted. |
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Problem | Cause/solution |
The unit does not record new messages. |
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I cannot operate the answering system remotely. |
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The unit does not emit the specified number of rings. |
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Problem | Cause/solution |
"Voicemail msg. via phone co." is shown on the handset display. How do I remove this message from the display? |
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Problem | Cause/solution |
Liquid or other form of moisture has entered the handset/base unit. |
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Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Panasonic KX-TGM420AZ, KX-TGM422AZ Troubleshooting Manual
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