I recently downloaded (free) a pdf of the encyclopaedic Philips service manual for my 1980's music centre from this French site:
www.rtvcenter.com.
It was not necessary to register. The manual is the French version, not a problem for my schoolboy french, but there is very little french text anyway: most of the manual consists of circuit diagrams, circuit-board drawings and exploded drawings showing the dismantling sequence, while much of the text of tabulated data and alignment instructions is in english.