Troubleshooting
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 the batteries into the handset again.
General use
Problem
Cause/solution
The handset does not turn on
even after installing charged
batteries.
R
Place the handset on the base unit or charger to turn on
the handset.
The unit does not work.
R
Make sure the batteries are installed correctly (page 9).
R
Fully charge the batteries (page 10).
R
Check the connections (page 9).
R
Unplug the base unit’s AC adaptor to reset the unit.
Reconnect the adaptor and try again.
R
The handset has not been registered to the base unit.
Register the handset (page 32).
The handset display is blank or
dark.
R
The handset is in screen saver mode (page 13). Activate
the handset display again by:
– pressing
M
N
when on a call.
– pressing
M
OFF
N
at all other times.
R
“
LCD backlight
”
is set to
“
Off
”
while on charge.
Change the setting (page 27).
I cannot hear a dial tone.
R
The base unit’s AC adaptor or telephone line cord is not
connected. Check the connections.
R
Disconnect the base unit from the telephone line and
connect the line to a known working telephone. If the
working telephone operates properly, contact our service
personnel to have the unit repaired. If the working
telephone does not operate properly, contact your service
provider/telephone company.
I cannot use the Smart function
key even if the
indicator is
flashing slowly.
R
Another unit is in use. Wait and try again later.
The base unit beeps.
R
New messages have been recorded. Listen to the new
messages (page 37).
Menu list
Problem
Cause/solution
The display is in a language I
cannot read.
R
Change the display language (page 12).
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Useful Information
TGH21xC(en)_0715_ver110.pdf 46
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