Pye Mk6 Camera type 842115 Handbook Volume 1 (text and diagrams)

MCR21 DC & Lighting Drawing,  BBC PID7440.5.27A1

MCR21 AC & Heating, Ventilation and General Services Drawing.  BBC

BBC Technical Handbooks:-

 

Other Equipment:-

Claude Lyons Automatic Voltage Regulator (AVR) Type TS-3  (text & and diagrams)