Abstract: A chip holding apparatus includes a holding block disposed above a circuit board that is formed with a plurality of sockets for holding chips respectively. Each of the sockets is formed with a retainer for securely holding the chip. The chip holding apparatus further includes a lift assembly coupled operably to the holding block. The holding block is formed with a plurality of openings. The lift assembly moves the holding block to a lower position, in which, the holding block presses and disengages the retainers from the sockets in order to permit insertion of the plurality of chips into the sockets via the openings in the holding block, and an upper position above the lower position, in which, the retainers retrieve to its normal condition, thereby retaining the chips securely within the sockets, respectively.

Abstract: A test apparatus includes lower and upper spacer discs for sandwiching and securing a printed circuit board therebetween, lower and upper plates, and a two-step driving mechanism. The lower and upper spacer discs are spaced apart from the lower and upper plates. Activation of the test apparatus in a first step results in relative movement between the spacer discs to sandwich the circuit board therebetween. Activation of the test apparatus in a second step results in relative movement between the lower and upper plates to sandwich the upper and lower spacer discs therebetween.

Abstract: A chip holding apparatus includes a holding block disposed above a circuit board that is formed with a plurality of sockets for holding chips respectively. Each of the sockets is formed with a retainer for securely holding the chip. The chip holding apparatus further includes a lift assembly coupled operably to the holding block. The holding block is formed with a plurality of openings. The lift assembly moves the holding block to a lower position, in which, the holding block presses and disengages the retainers from the sockets in order to permit insertion of the plurality of chips into the sockets via the openings in the holding block, and an upper position above the lower position, in which, the retainers retrieve to its normal condition, thereby retaining the chips securely within the sockets, respectively.

Abstract: A test apparatus includes lower and upper spacer discs for sandwiching and securing a printed circuit board therebetween, lower and upper plates, and a two-step driving mechanism. The lower and upper spacer discs are spaced apart from the lower and upper plates. Activation of the test apparatus in a first step results in relative movement between the spacer discs to sandwich the circuit board therebetween. Activation of the test apparatus in a second step results in relative movement between the lower and upper plates to sandwich the upper and lower spacer discs therebetween.