> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/library-preparation/multiomics-library-prep/library-preparation-multiomics-library-prep-faq-list/000009797.md).

# Servicing frequently asked questions for the Illumina Protein Prep Automation System (IPPAS)

**What are the instructions for properly power cycling the IPPAS system? What are the instructions when the system is non-responsive?**

* **Normal operation:** the IPPAS instrument will automatically power off when turned off using Windows shutdown on the PC.
* **Non-responsive operation**: Hold the power button on the far right of the IPPAS instrument to force shutdown.

![A person's hand pressing a green button on a black and white box  AI-generated content may be incorrect.](/files/BshUUvdKBvH8GWSqWqKr)

**Will the IPPAS generate an error message if “drop head adapter” has not been performed for more than one week?**

No, this action is not enforced. The guidance to drop head adapter weekly is in the user guide.

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #9797), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000009797%20-%20Library%20Preparation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


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