NOVELTY - The apparatus has a voltage application unit applying voltage along reverse direction to a mutually adjacent photovoltaic cell (Cn). A magnetic field detection unit is linked on a position along direction in which electric current flows. A defect position specification unit pinpoints a position of a defective part in a location indicating presence or absence of an electrical defective part (D). The defective part is produced based on output distribution of strength of the magnetic field linked on the position. The magnetic field detection unit moves a magnetic sensor part.    USE - Defect inspection apparatus for a thin film solar cell e.g. copper indium selenide (CIS) solar cell, Copper-Indium-Gallium-Selenium (CIGS) solar cell and Cadmium Telluride (CdTe) solar cell.    ADVANTAGE - The apparatus detects the position of the defective part in short time. The apparatus pinpoints position of defect for unskilled worker with high precision. The apparatus eliminates need for providing greater pushing force on the surface of the solar cell, so that complexities on the solar cell can be removed. The apparatus allows a shortening request of tact-time to be met. The apparatus is inexpensive without judging existence or nonexistence of a defective part by presence or absence of an electric current. The apparatus allows a probe to apply inverse voltage at ends of the cell, so that position detection of defect with higher sensitivity can be realized. The apparatus can carry out defect detection without reducing probability which overlooks defect detection by the output of a detection sensor when the sensor detects that a defective part fails or a sensor output is eliminated. The apparatus allows inverse voltage applied to the solar cell to be set to the voltage superimposing alternating current on direct current, so that the applied alternating current frequency component is extracted and frequency component of noise can be removed.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a manufacturing apparatus for a solar cell    (2) a defect inspection method for a solar cell    (3) a manufacturing method for a solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a top view of a defect inspection apparatus.'(Drawing includes non-English language text)'    Photovoltaic cell (Cn)    Electrical defective part (D)    External power supply (4)    Detection circuit unit (5)    Control part (6)    Drive part (7)    Process part (9)