# 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.](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-967876a32ef0f55b21a318c5818fa3213d973586%2Fimage1.png?alt=media) **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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