[Heatercathodeshort]

Hello Colin,
Rubber glove on. No voltages present here but will take away the fear factor and make a simple job a lot easier.
I have named the various adjustments for set up. The scan coil lever will revolve the coils around the neck of the tube to square the picture within the tube area. The picture position shuffle plate can be unlocked with the locking screw. It will then be found that by sliding it from side to side and pulling the lever up and pushing it down you will be able to centre the picture within the screen area. The ion trap is adjusted for maximum brightness at all times. Use the adjustments mentioned for centering and squaring up the picture, never the ion trap. The large rotary knob on the rear of the assembly is for FOCUS adjustment. Hope this helps. John.