US 8,008,940 B2Granted

Circuit board test system and test method

AssigneeRenesas Electronics Corporation

InventorNobuyuki Takase

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Abstract

A circuit board system is adapted to check a DUT (Device Under Test) and a communication device on a DUT board, check the connection between DUT and communication device and check connections of parts mounted on DUT board. The system, which tests a circuit board used when a DUT is tested using a tester, has a socket into which DUT is removably inserted; a communication device mounted thereon; first wires electrically connecting first signal terminals of DUT and the tester; and second wires electrically connecting second signal terminals of DUT, which are not electrically connected to the first signal terminals, and signal terminals of the communication device. A shorting board is inserted into the socket in place of DUT when the circuit board is tested, the shorting board having short-circuit wires electrically connecting the first wires and the second wires.

Claims12

Dependent claims

A circuit board test system for testing a circuit board used in a case where a device under test is tested using a tester, said circuit board test system comprising:

said circuit board that can selectively be tested by said circuit board test system, wherein said circuit board comprises:
a socket into which a device under test is removably inserted;
one or a plurality of communication devices mounted thereon directly or indirectly;
a plurality of first wires electrically connecting first signal terminals of the device under test and the tester;
and
a plurality of second wires electrically connecting second signal terminals of the device under test, if such device under test is inserted in said socket, said plurality of second wires not being electrically connected to the first signal terminals, and signal terminals of at least one of the communication devices;
and
a shorting board being inserted into the socket in place of the device under test when said circuit board is tested, said shorting board comprising short-circuit wires electrically connecting selected ones of the first wires and the second wires.

5 more elements

Dependencies are inferred from the claim text.