Tear Down pics...
I won't comment too much the board IDs are etched on the boards.
So here goes...
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/0504171642_zpswjqwpikd.jpg)
Mixer and YIGs are in the lower left..
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/Tear%20Down%20Pics/0504170812b_zpsbkghomvc.jpg)
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/Tear%20Down%20Pics/0504170813_zps7nhzl6fc.jpg)
High Voltage and deflection...
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/Tear%20Down%20Pics/0504170813a_zpsfepwpep5.jpg)
Everything is well labeled.
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/Tear%20Down%20Pics/0504170811c_zpsfinzu0y1.jpg)
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/Tear%20Down%20Pics/0504170811b_zpsz46h0jqi.jpg)
Main power supply...
![](http://i558.photobucket.com/albums/ss21/AF6LJ/Test%20Gear/HP-8569/Tear%20Down%20Pics/0504170811a_zpsfmab6kae.jpg)
Input attenuator in the upper left, relays for signal switching and lots of plumbing.