Wi-Fi Connection Troubleshooting Tool
Wi-Fi Connection Assistant
Wi-Fi Connection Assistant is a Wi-Fi connection troubleshooting app for Windows/macOS. The Windows version also has a network information setting function. Both can be downloaded, installed, and used.
Printer diagnostic functions
Print the network settings information of the printer, check item 3 Result code, and take action according to the number.
For printed status codes, see "List of Status Codes".