A device is arranged for scanning an optical record carrier (11), which has a data layer with parallel data tracks. The device has an optical head (22) comprising a detector having sub-detectors (44) for generating a main focus signal and sub-detectors (43,45) for generating satellite signals. A focus control unit (32) provides a focus actuator signal (38) to a focus actuator (34) in dependence of a focus error signal. A combining unit (41) generates the focus error signal based on the main focus signal and satellite signals in dependence on weight factors (Ga,Gb) for adjusting a correction of the main focus signal by the satellite signals. A servo filter (42) generates the focus actuator signal based on the focus error signal. A setting unit (40) sets the weight factors in dependence of an adjustment signal, which is based on the focus actuator signal (38). Advantageously the dissipation in the actuator is reduced, instead of minimizing residual focus error signals at the cost of large focus actuator dissipation.
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