Alesis SR-18 Service Manual page 8

2. DISASSEMBLE THE FONCTION PCB ASS'Y. (Fig2)
(A) REMOVE THE CABLE FROM LCM
(B) REMOVE 16 SCREWS
(Fig.2)
3.DISASSEMBLE THE ENCODER PCB ASS'Y. (Fig.3)
REMOVE 1 SCREW
(Fig.3)