Are you sure about your pinout? That looks very wrong to me.
The connector on the oscillator is a standard 7-pin tube socket. The numbering starts at the gap and goes clockwise. In the photo, the pin you've labelled as 10 MHz is pin 1, +28V is pin 2, etc. The connector that attaches to the oscillator should have the same gap as the connector on the oscillator so that you can't connect it wrong.
You're showing pin numbers that are out of order. That never happens for obvious reasons. Regardless of which way you count from, there's no way those pins can be 3, 4, and 5.
Unfortunately, it looks like there's an error in the pinout shown on the schematic. There must be a ground pin and none is shown. Does the wiring on the connector agree with the drawing in the schematic?