XF-640 SCAN MOTOR-6702049010, this is original Roland scan motor

SJ-1000 Assy, Scan Motor- 6700049030

RE-640 Assy, Main Board - 6701979010

AJ-1000 assy, head board- 6700105020

FJ-540 Main board-1000002976  / 7811903900

FJ-540 Power Supply Board - 1000007552

SJ-645 Head Board - W811904020‏

RS-540/VP-540i Main board- 6700989010, original

SJ-1000 asyy, main board-1000002977

SP-300i Assy, main board-6701189010

SP-300V assy, main board-6084060000

VP-540 assy ,main board-6700469010