What is E64 error code on a topcon 3B?

The E64 error code on a Topcon 3B typically indicates a communication issue, often related to the internal components or sensors not functioning correctly. This error can arise from problems such as loose connections, faulty hardware, or a need for a software update. It's advisable to check all connections and reset the device; if the issue persists, consulting the user manual or contacting Topcon support may be necessary for further troubleshooting.