Telecom Behnke 20 Serie Instructions page 68

Door intercom without function
▸
Check and, where necessary, measure a / b
port
▸
Where additional power supply is connected,
verify that it is potential-free
▸ Multiple door stations have been connected
in parallel each telephone needs an indi-
vidual analogue connection and an individual
potential-free power supply
▸
Coil current of the telephone system sufficient
needs to be larger than 20mA
▸
Cf.: technical specifications for door intercom
devices
Occasional call triggered from the door inter-
com devices
▸ Additional call button connected, remove
buttons, do not connect buttons in parallel
▸
With a detached basic electronics, please
adhere to the maximum length for the button
line wiring. Please cf. the relevant data for
your basic electronics.
▸ Third party button connected, check the
button for suitability, bounce, potential-free,
no shared ground.
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Manual Door intercom devices a / b Series 20 / 30 / 50
Security code for the door intercom station
unknown
▸
Hardware test required
1. Remove telephone line a/b
2. Where connected, remove the additional 12V
to 15V power supply
3. Remove EEprom (Component top right of the
circuit board with four legs both on the right and
the left, See chapter "3.1. Wiring diagram" on
page 48)
4. Connect the telephone line and wait for the
basic electronics to beep three times
5. Reconnect the EEprom (with connected a/b
line).
6. In order to reset the security code, press the *
key and keep it pressed until the basic electron-
ics starts emitting a beep. Let go of the key.
In order to reset the entire device, press the #
key and keep it pressed until the basic electron-
ics starts emitting a long beep.
Delate a valuation (e.g. dial-number)
▸ Enter set-up mode
▸
Enter the configuration step code and confirm
with the # The saved valuation is deleted
GB
FAQ
68