(login neil.duncan Password 1F********!58** ID = 28863)
The switch groups SK1 (1) the Tape Speed, SK3 (3) PLAY and SK2 (4) RECORD buttons are shown below. Viewed from the top of the Recorder SK3 is on the left.
philips_el3538a_sch1a-2
philips_el3538a_sch1b-1
Philps-EL3538-Tape-Recorder-Copy