You can adjust your Community Subscriptions in Settings
You can add Community Subscriptions in the search bar that says "Subscribe to more communities ..."
You'll need the service manual,
http://www.welchallyn.ca/content/dam/welchallyn/documents/sap-documents/LIT/810-1/810-1651-04LITPDF.pdf
the software,
https://www.welchallyn.com/content/welchallyn/americas/en/service-support/service-center/service-tool.html
the tool set,
https://www.welchallyn.com/content/dam/welchallyn/documents/upload-docs/Service/ServiceandMaintenenceToolset/ServiceandMaintenanceToolset_VitalSignsMonitor-300.pdf
and the training.
https://www.welchallyn.com/content/welchallyn/americas/en/service-support/partners-in-care/education-services/technical-training.html