Koba Vision Vocatex Standard 3 Mode D'emploi page 36

Reading
Reading is best done in positive or negative mode. These modes adapt the image for the visually
impaired to a high-contrast image with improved background. Background and letters can be set at
your discretion. The background can be set by means of background suppression (Vocatex Plus).
This will allow you to filter out the structure of a sheet. This unique KOBA Vision function allows
you at all times to set a high contrast background without annoying paper impurities. A newspaper
can be read without annoying paper impurities. Factory settings will take you back to the original
settings.
Watch photos
Photos are best watched in photo mode. This mode is a unprocessed image without contrast
enhancement. By changing the brightness (Vocatex Plus), you can adjust the image so that the
photo becomes clearly visible. Quality is slightly improved when locking the auto focus.
Crafting
Crafting is best done with a small magnification. It is better to select a dark background during this
activity so that the camera is not hindered by large differences in contrast with whatever is
darkened by the hands.
Writing
You can also write under your video magnifier. It is best to use a black pen and lined paper and to
lock the auto focus on the paper.
Chapter 4: Troubleshooting
Below is a list of problems that may occur with your Vocatex. Consult the list first before contacting KOBA
Vision or your dealer.
Symptom
The device isn't turning on
Possible causes
No power
What to do
Check the power cable
Check the adapter and verify if a
green led is burning
KOBA Vision Vocatex
Symptom
No display on the screen
Possible causes
Power failure
The screen is not switched on
What to do
Check whether the plug of the power
cord has been properly plugged into
the wall socket If the device still
won't work, pull the plug out of the
wall socket. Then wait 60 seconds
before plugging it back into the wall
socket. Turn the screen on again.
Press the "on" button on the remote
Symptom
No sound
Possible causes
The screen volume is on zero
The sound has been disrupted
The headphone is plugged in
The HDMI connector is loose
What to do
Slightly turn up the screen volume
Check whether the sound has not
been disrupted.
Point the remote control directly
towards the sensor at the front of the
screen.
Unplug the headphone
Check the HDMI plug.
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