USE & MAINTENANCE
4444
T-31H
T-31H
T-31H
T-31H
Volume
control
Power On
and Off
The T-31H does not feature an off/on switch, because it was designed to remain permanently on so as to
ensure optimal electrical and thermal operating conditions.
Upon first power-on, or whenever your T-31H has been disconnected from the mains for a long time, it
is recommended that you wait for about one hour before use.
Should you not use your T-31H for a long period of time, simply unplug its power cord. It is
recommended that when you do so you switch off your entire hi-fi system and disconnect your headset.
Warning : whenever the T-31H is in power-off mode (i.e. disconnected from the power supply) no
equipment should be connected to the inputs/outputs
and
lest their sound quality become
impaired.
Warning : too high a sound volume used over long periods of time may significantly damage your
hearing . Please be reasonable !
Volume is set by means of knob which controls a high quality ALPS stereo potentiometer. Upon first
starting be sure to lower volume to its lowest level, i.e. the volume knob turned all the way to the left,
before you put on the headset.
Warning : never ever conduct any care & maintenance-related tasks with the power on !
The T-31H was designed to operate for years without any maintenance nor adjustment.
If dust gathers on the unit simply wipe it off with a dry cloth.
In case the unit was dirtied or soiled do NOT use any detergent or solvent. Do not either use common
household cleaning papers whose textures are abrasive. Use instead a soft wet cloth and if need be soap.
Then carefully wipe the unit clean with the soft wet cloth.
Routine
maintenance
Troubleshooting
Upon Power-on, the front panel light does not come "On" :
- check that the power cord is correctly plugged into the base and connected to the mains ;
- check that the mains outlet is live.
Light comes "On" normally but the headset has no sound :
- check that the sound feed line is live (music is being fed) and that volume control is not
turned all the way down (¼ knob revolution is enough) ;
- check that all the sources and the headset connections have been carried out as per instructions,
and that all components are operating normally.
Bad sound quality (e.g. too loud, too weak, background noise, distortion, rumble ...) :
- check that you have properly observed all installation and operation recommendations in this
manual ;
- check that the technical specifications of your other equipment are compatible with the specs
of this unit : refer here to the « Technical Specifications » chapter.
There still is a problem with unit operation. Contact the seller of your unit or use the warranty as set out
in the ‘warranty’ chapter of this manual.
After-sale service
