Philips PM3266 & PM3262 scopes.
Not a direct answer to your search. But you may find it helpful to know that there are four scopes in this basic family. The manual for any would be enough to solve virtually all your troubles. The PM3262 is the basic 100MHz, dual trace,dual timebase version. The PM3263 has digital delay. The PM3264 is four channel, while your PM3266 is the fast transfer analogue storage. The PM3260,PM3261,PM3265 family are earlier and different. I might be able to get sight of a manual for one of these sometime, and will post a reference if I am successful. BillN m0wpn.