PURPOSE: To control the drive of an optical pickup without depending on an environmental temp.

CONSTITUTION: An ambient temp. of the optical pickup 10 is detected by a temp. sensor 31. A constant of the drive control of the optical pickup 10 is variably adjusted by electronic volumes 35 and 36. The electronic volumes 35 and 36 are controlled by a microcomputer 32 in accordance with temp. information detected by the temp. sensor 31, so that variable adjustment corresponding to a temp. change can be carried out.