In preparing to troubleshoot the issue described in e-log #54, the crane was power cycled, and the pendant battery removed, to get to a "fresh start" state. Prior to this, the crane functioned normally aside from the incorrect E/W direction control on the North Aux Hoist.

Upon powering the crane back on, the pendant did not work to control the crane in any mode. The HMI had a fault present which read "305. Radio Control Receiver in Fault (3700RC)". This was accompanied by a red light in the safety control relay status summary screen, for "Radio Control Converter Communication Fault With Receiver (3714CONV)".

If the crane was placed in remote mode, the safety control relay status summary all turned green, and the reset button could be pressed, enabling remote mode. This means the issue was specific to the pendant/receiver communication specifically.

The receiver (in the cabinet in the control room) was inspected and the power status LED was on, the RF LED was off (which means there is no issue, OK), and the "OK to receive signal" LED was on - this indicates that the receiver was functioning as expected.

To further troubleshoot the issue - the crane was powered off, the receiver's antenna was disconnected and reconnected, and the multipin connector for the receiver was disconnected and reconnected. The system was powered back on, and the reset button was pressed. The fault message and the safety relay issue were cleared, and the pendant functioned again as normally expected (aside from the persistent issue from e-log #54).

It is unclear exactly what the issue was and how it was resolved, but could have been related to either a loose connector, or power cycling and resetting the system.