I do not know this for sure, but I expect the 201 is mechanically not too different from the 207 etc. (which I have). On these, go to the back and look for the larger screw more or less in the centre of the backplate. Undo this screw and then slide the electronics/chassis carefully by pulling forward from the front of the unit.

Cinema/Music: Trinnov Altitude32 8-16,218,Cloud 4 channel, Marantz UD5007,DSP5200SE(2+C),DSP3300(4),DSW(2),271,MShort Ceilings,AppleTV 4K
TV: Marantz SR7013 Wharfedale Diamond 9x4+Celestion(C)
Music: Roon,i7NUC8gen,QNAP TS253A, Sony Scala, MS200, Garrard DDQ650,Wharfedale Diamond 12.3
Kitchen: AD88 (bluetooth via i80).