USB connection, unlock button
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Siemens Graphical User Interface UI400 CE1U2348en
Building Technologies 2014-06-03
3.6 USB connection, unlock button
QAA74:
USB Mini-B connection
AVS74:
USB Mini-B connection, unlock button
The AVS74 has an unlock button. Use a sharp object (e.g. ballpoint pen) or a
screwdriver, up to size 2.
The unlock button function for Boiler Management Units is explained in Sect
"Unlock button on Boiler Management Units [➙ 99]".
On the AVS74.761, the USB Mini-B connection and unlock button are protected by
the cover.
You must remove the cover as follows to access these operating elements:
w You require a screwdriver, up to size 2.
1. Place the screwdriver in the front in the opening under the snap.
2. Push up the snap using the screwdriver.
The cover is released from the housing.
3. Remove the cover.
a The USB interface and unlock button can now be accessed.
USB connection, unlock
button
AVS74.761: Remove
cover
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