--- title: "Troubleshooting and support MX925" url: "https://docs.adyen.com/point-of-sale/user-manuals/terminal-deprecation/mx925-user-manual/troubleshooting-and-support-mx925" source_url: "https://docs.adyen.com/point-of-sale/user-manuals/terminal-deprecation/mx925-user-manual/troubleshooting-and-support-mx925.md" canonical: "https://docs.adyen.com/point-of-sale/user-manuals/terminal-deprecation/mx925-user-manual/troubleshooting-and-support-mx925" last_modified: "2019-04-18T08:59:00+02:00" language: "en" --- # Troubleshooting and support MX925 [View source](/point-of-sale/user-manuals/terminal-deprecation/mx925-user-manual/troubleshooting-and-support-mx925.md) ## Self-service If there is an issue with your payment terminal, first try to diagnose and solve the issue yourself, using our [Troubleshooting documentation](/point-of-sale/pos-troubleshooting). In many cases, this will be the quickest solution. ## Ask for assistance If you cannot resolve the issue using the Troubleshooting documentation, send an email to our [Support Team](https://ca-test.adyen.com/ca/ca/contactUs/support.shtml?form=other). Provide the following information: * Merchant account. * PSP reference of the transaction, if applicable. * Terminal serial number. This number is available in the **Device info** and also printed on the back of the terminal (for example, S/N:123-456-789).