What is error code e-63 on topcon 7005 total station?

Error code E-63 on a Topcon 7005 total station typically indicates a problem with the instrument's internal memory or data processing. This error can occur due to issues like a low battery, corrupted data, or a malfunctioning internal component. To resolve it, try resetting the instrument, checking the battery, and ensuring that all data is correctly saved and not corrupted. If the issue persists, consulting the user manual or contacting technical support may be necessary.