The Type 536 does not contain trigger and sweep circuitry. To use a 536 as a conventional oscilloscope, install a Type T timebase plug-in in the Horizontal bay.
The 536 contains identical vertical and horizontal amplifiers, with a front panel control to set the two in phase. This allows an equal bandwidth of 11 MHz in both directions. It also has a special CRT (T5360) with equal bandwidths in both directions. Aside from the amplifiers, the only other circuitry in the entire scope are the power supplies and calibrator.