Patent ID: 8603840

Claim:
A method of manufacturing a semiconductor device, comprising the steps of: (a) assembling a semiconductor device by mounting a semiconductor chip over a front-side surface of a wiring substrate including a front-side pad on the front-side surface and a back-side pad on a back-side surface, the front-side pad and the back-side pad being electrically connected to each other, and also mounting a solder ball on the back-side pad; (b) inserting the semiconductor device into a socket to bring first and second contact pins provided inside the socket into contact with the front-side pad and the solder ball, respectively; and (c) performing a conduction test of the wiring substrate via the first and second contact pins, wherein the socket includes a movable pedestal for receiving the semiconductor device on, a base section arranged under the movable pedestal, and a lid section which is arranged over the semiconductor device during the conduction test, wherein the lid section includes a positioning pin and the first contact pin contacting the front-side pad, wherein the base section includes the second contact pin contacting the solder ball, and a positioning member engaging with the positioning pin, wherein the movable pedestal engages the positioning member, and is provided movably along an extending direction of the first and second contact pins under a guidance of the positioning member, and wherein the conduction test of the step (c), when the movable pedestal is being positioned relative to an arrangement direction of the first and second contact pins by the positioning member, is performed while bringing the first contact pin into contact with the front-side pad and also causing the second contact pin to penetrate the base section and contact the solder ball.