Roland Corp. put a list of authorized Roland Service/Distributor around the world in the user manuals of its products.
In the manuals I have (S760, SCD15 & JP8000), the services in Mexico are:
Casa Veerkamp, s.a. de c.v.
Av.Toluca No.323 Col.Olivar de los Padres 01780 Mexico D.F.
MEXICO
TEL: (525) 668 0480
La Casa Wagner de Guadalajara, s.a de c.v.
Av. Corona No.202 S.J.
Guadalajara, Jalisco Mexico
C.P. 44100 MEXICO
TEL: (03)613 1414
I've copied the addresses exactly as printed in the manual.
MGomes