Toa TS-911 - Wired Chairman Unit TS-911;811 and Wired Delegate Unit TS-912;812

34
Symptom Cause and Points to Check Remedy
Indicator on the
microphone goes out
during speech.
Mic-Off function set to ON. Disable the Mic-Off function if a long
pause is made during speech.
Microphone indicator
ashes.
Battery voltage has dropped below a
marginal level.
Replace the battery with a fully charged
one.
Chime does not
sound when the
Priority Speech key is
pressed.
Central unit’s rear panel-mounted
Priority Chime volume control is set to
the minimum volume position.
Adjust the volume control to an
appropriate level.
The Priority chime mute switch in the
Chairmanunit’sbottomissettoON.
Set the Priority chime mute switch to
OFF.
Mic-Off function does
not work.
High background noise level generated
by such equipment as air conditioners.
In areas where the background noise
level is high, the Mic-Off function may
not work.
Reposition in a low-noise location or
turn off the Mic-Off function.
Battery can be used
only for a short period
of time.
Not fully charged. Charging is completed within 5 hours.
Note: Fully charged batteries can be
used for up to 10 hours.
(Refer to the separate Installation
manual.)
Battery is approaching the end of its life. Use a brand-new battery.
Note: Battery can be recharged
almost 300 times.
10.2. Wired Chairman Unit TS-911/811 and Wired Delegate Unit TS-912/812
Symptom Cause and Points to Check Remedy
Cannot turn ON power. Both the Central unit and the Expansion
unit are not powered up.
SwitchontheCentralunit’spowerand
power up the Expansion unit through
the AC adapter.
They are not connected properly. Check all connections. (Refer to the
separate Installation manual.)
No sound output
from the speaker or
headphone.
Monitor Selector switch not correctly
set. (TS-911/912 only)
Set the switch to the position where
sound can be heard.
Central unit’s Microphone Mix/Cut
switch not correctly set.
Monitor volume control not correctly
adjusted.
Adjust the volume to an appropriate
level.
Headphone plug not fully inserted. Insert the headphone plug fully into the
jack.
Cannot initiate speech. CentralUnit’srearpanel-mountedShort
Circuit indicator remains lit.
Check the cable connected to the
Central Unit’s Infrared Transmitter/
Receiver unit I/O terminals.
Live Status indicator on the Infrared
Transmitter/Receiver unit remains dark.