Volume Control; Cleaning And Maintenance - Transistor 200 21 82 Manuel

ENGLISH

4. Volume control

The amplifier has an automatic volume control (AGC = Automatic Gain Control),
which means that the sound level in the loop remains constant, even if the sound
level on the TV changes. If necessary, you can adjust the sound level using the vol-
ume control on the amplifier. You will normally only need to do this once.
Troubleshooting
Type of fault
There is no sound, or there is a hum-
ming sound:
The sound is faint:
The LOOP OK lamp is off:
The sound does not correspond to the
TV picture:
No sound is heard when a video
camera is connected to the TV for
playback.
The sound precedes the image.

Cleaning and maintenance

Vacuum outside of amplifier and chair loop cushion using a soft brush. Use a damp cloth to wipe the outside of
the amplifier. Never use cleaning products or solvents. From time to time check that the cords and connections
are intact.
Repairs
If your product malfunctions, it must be repaired by a qualified technician. Do not attempt to open the product,
since this would invalidate the warranty. (You may, however, remove the grey fabric cover from the chair loop). If
your product requires service, please contact your hearing care professional for assistance.
Waste disposal
This product contains electrical or electronic equipment and should be disposed of carefully in the inter-
ests of your safety and the environment. Please contact your local hearing care professional concerning
disposal of the product.
14
Solution
1. Check that the amplifier's mains cable is connected.
2. Check that the switch on the front of the amplifier is set correctly
(see pages 10-12). 3. Test by moving the chair loop to another seat.
(The hum may be due to electrical fields in the room.)
4. If you are using connection option A, Line Out, check that the
socket is NOT a sound input for a video camera (see page 10 and/or
the TV user manual).
1. Increase the volume on the amplifier.
2. If you are using the microphone, check that it is attached to the TV
speaker and that the TV volume is on.
3. Check that the hearing instrument is in the T or MT position.
4. Check that the chair loop is connected. Sit on the chair loop.
1. Check that the chair loop is connected.
2. If the LOOP OK is off even though the chair loop is connected cor-
rectly, the chair loop is defective. See "Repairs" below.
1. If the amplifier is connected in series with several external units, (e.g.
video, DVD, satellite box) via the SCART input, switch off the other
external units. 2. If you have cable TV with a digibox but are watching
an analogue channel, switch off the digibox. 3. If you are watching a
DVD film and have the right picture but the wrong sound, connect
the Line-Out cord from the amplifier's MIC/LINE output to the DVD
player's Line-Out output. 4. If you are recording on the video and
watching another TV channel, use connection option C.
If you are using connection option B (SCART cable), try out connec-
tion option A or C instead.
Adjust the DELAY knob until the sound is synchronized.