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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 volume control on
the amplifier. You will normally only need to do this once.
Troubleshooting
Type of fault
Solution
There is no sound, or there is a
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
humming sound:
pages 11-14). 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 B, Line Out, check that the socket
is NOT a sound input for a video camera (see page 12 and/or the TV user
manual).
5. Check your TV´s audio settings (or advanced audio settings). Make
sure that the PCM setting is activated. Please note that the AutoMini
Digital does not support ie. Dolby.
The sound is faint:
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.
The LOOP OK lamp is off:
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.
The sound does not correspond to the
1. If the amplifier is connected in series with several external units, (e.g.
TV picture:
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 LINE/DIGITAL 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 D.
No sound is heard when a video camera
If you are using connection option C (SCART cable), try out connection
is connected to the TV for playback.
option A, B or D instead.
The sound precedes the image.
Adjust the DELAY knob until the sound is synchronized.
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 ampli-
fier. 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 interests of your
safety and the environment. Please contact your local hearing care professional concerning disposal of the product.
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General security precautions
• During the installation: always start with the volume control set to minimum and then gradually increase the volume to
a comfortable level. Hearing may be damaged if the sound level is too high.
• Chair loop: If you know that you have extremely sensitive skin, it may be good to avoid prolonged skin contact with the
chair loop. Place the chair loop under the seat cushion or wear, for instance, trousers to avoid direct skin contact with
the chair loop while sitting on it.
• Low-energy radiation (e.g. from burglar alarms, room surveillance systems, radio equipment and mobile phones) is not
harmful to the product. These types of radiation could, however, momentarily affect the sound quality or create noise
in the device
• Warning: External devices connected to the product must be safe according the requirements of EN 60601-1-1, EN
60335-1 or EN 60065, as appropriate.
Part numbers and accessories
AutoMini Digital Set, EU 300 00 06, Included in AutoMini Digital, EU:
AutoMini Digital
300 01 05
TOSLINK - miniTOSLINK cabel
300 00 52
Mains adapter
200 10 37
RCA cable with 3.5 mm jack, 1.5 m
200 10 33
Audio cable 3,5 mm - 3,5 mm, 1,5 m
300 01 17
Chair loop
200 20 45
Accessories:
Neck loop with volume control
18 09 04 00
Connection cord for neck loop
200 20 26
FXT microphone with 3.5 mm jack, 4 m
200 60 13
DIN connector
16 337 300
Scart cable
200 10 39
Coaxial digital, SPDIF, RCA - 3.5mm, 1m
300 01 96
Technical data
AutoMini amplifier
Analog input:
>50mV
Digital input:
PCM uncompressed audio over S/PDIF
Output load:
4 Ohm
Power output:
10 W at 4 Ohm
Transient state time:
50 ms
Decay time:
35 s
Frequency range:
80 Hz - 8 kHz, -3 dB rel. 1 kHz
Distortion:
<1%
Signal/noise ratio:
>40dB A-weighted
Delay of sound:
Off and 50-180 ms
Dimensions:
145 x 70 x 30 mm (with attachment approx. 38 mm)
Weight:
150 g (without mains adapter)
External mains adapter:
Plug-in adapter, primary 230V 50Hz, secondary 18V DC, 0,8A
Chair loop:
Resistance: 4 ohms
Dimensions: 41 x 41 x 0.2 cm
Connector: 2-pin DIN loudspeaker plug
Flex length: 10 meters
Any issues relating to the EU Medical Device Directive
93/42/EEC should be directed to AB Transistor Sweden.
ENGLISH
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