Toa TS-900 Series - Manual (Page 55)

55
17. IF A FAILURE IS DETECTED
17.1. Chairman Unit TS-901 and Delegate Unit TS-902
Symptom
Cannot turn ON power.
Cause and Points to Check
(When using the lithium-ion battery)
Battery not charged.
Remedy
Batteries are not charged as shipped
from the factory. Be sure to fully charge
the battery before use. (Refer to p. 43.)
No sound output from the
speaker or headphone.
Monitor volume control not correctly
adjusted. Adjust the volume to an appropriate
level.
Cannot operate the
Talk key.
Infrared Emitter/Detector exposed to
direct sunlight or spotlight. Reposition in a location not exposed to
direct light. (Refer to p. 27.)
Are the Infrared Transmitter/Receiver
units and Chairman/Delegate units
positioned to permit their infrared
emitter/detector sections to be in
sight of each other?
Are the TS-905 or TS-907 Infrared
Transmitter/Receiver units correctly
selected to match the ceiling height
and installed so that all the
Chairman/Delegate units are in the
communications service area?
(If both the Power and Speech
indicators simultaneously flash, this
indicates the unit is out of the
communications service area.) Install all the units so that they are in
clear view of each other, and select and
install the Infrared/ Transmitter/Receiver
units correctly for the ceiling height.
(Refer to p. 25.)
Monitor Selector switch not correctly
set. Set the switch to the position where
sound can be heard.
Central unit's Microphone Mix/Cut
switch not correctly set.
Headphone plug not fully inserted. Insert the headphone plug fully into the
jack.
Unit address numbers outside range
of 01 – 96. Set the unit address number within the
range of 01 – 96. (Refer to p. 41.)
Cable between the Infrared
Transmitter/Receiver unit and the
Central Unit not connected. Connect the cable.
Priority speech is in progress. Operate the key after the priority
speech is completed.
(When using the AC adapter)
Power cord or DC input plug not
connected. Connect the power cord (supplied with
the AC adapter) and the DC input plug
correctly. (Refer to p. 44.)
Cannot initiate speech. Is the Central Unit's rear panel-
mounted Short Circuit indicator
illuminated? Check the cable connected to the Central
Unit's Infrared Transmitter/Receiver unit
I/O terminals.
Does the Live Status indicator on the
Infrared Transmitter/Receiver unit
remain dark?