You may need to perform a factory reset on your Icom 756 Pro (1,2,3) ham radio. Perhaps you are selling it and wish to clear out all of your customization and personal data.
Resetting your Icom IC-756 Pro
Perform the following steps in order-
Total Time: 2 minutes
Make sure the transceiver is powered off.
While pressing M-CL and (F-INP)ENT, push POWER to turn the power on.
The internal CPU is now reset.
Video demo of the Icom 756 reset process