In the bottom part of the case, You find the power supply, connect it to the mains using the pushbutton of the CMC automatic fuse, the meter is used to indicate the mains voltage.
Set to the measured mains voltage before switching on the set with the main switch.

The power supply will deliver the necessary filament -H (- 8,5 V), plate +A (+ 330 V) and grid Gv (- 65 V) voltages and will be connected to the battery case using the "machine cable". The correct operating voltages for the transceiver will be generated in the "Battery case", for correct operation, the accumulators have to be installed in the battery case.
Take care not to run the TL with the power supply without having the accumulators installed, without their buffering, voltage peaks can ruin the transceiver.

The Antenna tuner seen on my pictures has originally been stored in a separate spares, antenna and accessories case.