http://www1.tek.com/forum/viewtopic.php?f=5&t=5350
http://www.eevblog.com/forum/repair/attempting-to-repair-a-tektronix-2430/
https://hohlerde.org/rauch/elektronik/geraete/tek2440/index.en.html
http://tektronix.fixkick.com/

U450 (CCD)
A/D: MC10319