# Troubleshooting MiSeq "Z Motor The Z stage amp Op amp might not be wired correctly" Error

Users may encounter a "Z stage/amp/Op-amp might not be wired correctly" error at any point during a MiSeq run. This issue may be caused by a communication error or by issues with the Z-stage itself.

**To troubleshoot this issue :**

1. Perform the post-run wash as indicated.
2. Power Cycle the MiSeq. Instructions for this procedure may be located in the Illumina Knowledge Article [How to shut down or power cycle the MiSeq](https://knowledge.illumina.com/instrumentation/miseq/instrumentation-miseq-reference_material-list/000001894).
3. Navigate to the [MiSeq System Checks](https://knowledge.illumina.com/instrumentation/miseq/instrumentation-miseq-reference_material-list/000001777) Menu and perform the Z-Stage test 5 times. The rest of the checks may be de-selected.
4. If error persists, instrument fails to initialize, or one of the Z-Stage test replicates fail, Contact Illumina Technical Support.
5. If the instrument initializes without error and all five Z-Stage tests pass, the instrument is clear for the next run.
6. If the next run fails with the same error, contact [Illumina Technical Support](https://www.illumina.com/company/contact-us.html#/united-states/technical-support).

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