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docs/case2.0/tips-and-tricks.md

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+---
+title: Tips and Tricks
+order: 99
+---
+
+Something's not working and you want to know how to fix it? Hopefully this page got you covered.
+
+## Preface
+As a general rule: **don't disassemble any of the modules, ever!** This also applies to experienced VOC people!
+
+Everything which needs to be accessed can be reached without violence, especially in the lectern module.
+
+## Lecture Module
+
+### No Signal at Projector
+- Try another HDMI cable
+- Try to use the projector without the lectern module
+- If nothing helps, you can extend the tray all the way and use different ports
+
+### No Audio from the Speaker Laptop
+- Turn on the correct audio source on the ATEM mini:
+    * 3.5mm jack: Turn on "MIC 1"
+    * HDMI audio: Turn on input 1 ("ON" button is shining red or "AFV" is enabled)
+- Other inputs should be off when not needed
+
+![](img/lectern-audio-comp.jpeg)
+
+### Noise/ Humming from the Speaker Laptop/ Lectern Module
+- Turn off the 3.5mm jack input "MIC 1" on the ATEM mini ![](img/lectern-audio-comp.jpeg)
+
+### Fully Extend the Tray
+The lectern module's tray has some cable ties as stoppers which prevent it to be fully extended.
+If the tray is pulled out too much, the cables to the I/O panel will probably get dislodged and **will cram up between rack tray and network switch**!
+So do not pull out the tray more than needed!
+
+In case you need to reach the additional ports (HDMI and secondary SDI) of the UpDownCross, you can get over the stoppers with these steps:
+
+- Pull tray out until stoppers are reached
+- Place your hands with 4 fingers below the tray and the thumb on top ![](img/lectern-tray-stoppers_hands-comp.jpeg)
+- Press up next to the cable tie stopper until it goes past the I/O panel below ![](img/lectern-tray-stoppers-comp.jpeg)