JPS6230385B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for adjusting and inspecting a composite board on which a plurality of circuit units are formed using a stylus jig.

The method of adjusting and inspecting using a stylus jig is currently carried out for each individual circuit unit, but with this method, due to variations among the units that make up the product, it is necessary to perform adjustment and inspection again at the stage of commercialization. be.

On the other hand, automation of parts mounting on boards is now becoming widespread, and in order to increase its effectiveness, the number of parts per board is increased, ie, composite boards are used. In addition, from the viewpoint of improving the cutting rate of the board, boards are assembled and combined.

Therefore, in order to check the overall adjustment of a plurality of circuit units formed on such a composite board, a method is adopted in which jumper wires are passed between each circuit unit before soldering. However, this method is only for checking the adjustment of the entire composite board, and therefore cannot be used for parts that require such adjustment checking, since it is not possible to check the adjustment of each circuit unit alone. Initially, it was mainly used for connecting simple units such as LED boards and switch boards.

The present invention has been developed in view of this point, and it is possible to perform adjustment inspection of each individual circuit unit of a composite board having a plurality of circuit units corresponding to a product, and adjustment inspection in relation to the overall variation among each circuit unit. The aim is to reduce the number of adjustment and inspection man-hours by making it possible.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. 1 is a composite board, on which multiple circuit units A to A corresponding to circuit groups having various functions of the product are installed.
E is divided by a dividing portion 1a such as a perforation or a V-cut. For example, if the product is a receiver, the circuit units A to E are a front end section, an intermediate frequency amplification section, an MPX section, a tone control section, an audio amplification section, etc.

Reference numeral 2 denotes a stylus base having the same size and shape as the composite substrate 1, and a stylus 3 is implanted on one side of the stylus base at a position corresponding to an adjustment inspection point of the composite substrate 1. A lead wire 4 from this stylus 3 leads to a control section 5 consisting of a microcomputer, logic circuit, etc. 6 ₁ to 6 _o are power supplies, frequency oscillators, distortion meters, level meters, and other equipment.

Next, in the adjustment inspection, the stylus stand 2 is positioned on the composite substrate 1, and the stylus 3 is brought into contact with the adjustment inspection point on the composite substrate 1. Then, by controlling the control unit 5, the devices ₆₁ to _6o are connected to the stylus 3 of each circuit unit A to E to give electrical input and take out an electrical output, so that the devices 61 to 6o The characteristics of each individual unit of E are checked to confirm its quality, and the variable resistors, trimmers, coils, etc. on each of the circuit units A to E are adjusted.

Next, the control unit 5 electrically connects the necessary stylus 3 of each circuit unit A to E to provide electrical input and electrical output. Then, the control section 5 controls the devices ₆₁ to _6o to check the overall characteristics of the composite board 1 in a state where each circuit unit A to E is electrically connected. Variable resistance, trimmer,
Make final adjustments to the coils, etc. Thereafter, the stylus base 2 is separated from the composite substrate 1 to complete the adjustment inspection.

As described above, according to the present invention, it is possible to perform an adjustment inspection of a single circuit unit of a composite board having a plurality of circuit units and an adjustment inspection of the entire composite board. As a result, there is no need to redo adjustment inspections at the stage after commercialization, resulting in a significant reduction in man-hours. The present invention is suitable for equipment in which variations in characteristics of individual circuit parts pose a problem when assembled as a whole, such as a receiver.

[Brief explanation of the drawing]

The figure is an explanatory diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Composite board, 1a...Divided part, 2...Stylus base, 3
...Stylus, 4...Lead wire, 5...Control section, 6
₁ to 6 _o ...Equipment.

Claims (1)

[Claims] 1 Adjustment inspection points of the composite board are placed at the adjustment inspection points of the board portion corresponding to each unit of a composite board assembled into a plurality of circuit units, each of which has at least one of various mutually related functions of the product. The stylus of the stylus base having the stylus is brought into contact with the position corresponding to the stylus at the same time, and the control section applies electrical input from the stylus to each circuit unit and extracts electrical output from the stylus to each circuit unit. Then, predetermined styluses of the stylus contacts in contact with the adjustment inspection points of different circuit units are interconnected by the control unit to associate the functions of the circuit units. In this state, an electrical input is given to the stylus by a control unit, and an electrical output is taken out from the stylus to perform an adjustment inspection of the entire composite board.