Technical Manual D 653/21a

Picture 6 "Steuerapparat" translates to "Control Apparatus". This looks like it might be a control to adjust the speed of the turret's traverse.

Picture 7 Emergency switches.

Picture 8 The unit at top, labeled "Schleifringübertrager" contains the slipring transducers. The bottom unit represents the generator.

Picture 9 The top unit probably represents devices located at or near the driver's control panel. The circular symbol with the "V" inside represents a volt meter. The switch symbol labeled "Zündschalter" is the ignition switch. The bottom symbol, labeled "Kontrollampe", represents a light that turns on when the ignition switch is closed. The unit to the lower left represents the auxiliary motor that supplies power to the generator. Translations: "Zündspule" = ignition coil, "Zündkerze" = spark plug, "Entstörer" = dejammer (a filter to minimize motor's interferance with radio signals), and "Anlaß-Motor" = engine starter. The little unit to the lower right represents a foot switch. The line leading into this switch represents incoming power from the 12 volt batteries.

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