JPS6089771A - Board checker - Google Patents

Abstract

PURPOSE:To allow even an untrained operator to operate a board checker and to display accurately a defective position and efficiently by dedicating a check program, plural keys, and others to a board check. CONSTITUTION:A main body 1 is equipped with a pod 2 for coupling with a conforming board or board to be checked upon occasion and a probe 3 for checking respective parts. A memory cartridge 4 for storing data on the conforming board is attached to the side end part of the main body 1. Further, a display part 5, conforming/nonconforming display part 6, and printer 6 for indicating a check and displaying its result are provided on the main body 1. A program for the check is stored in the main body 1 and a computer control part 8 is provided. Further, a keyboard 9 is provided with plural keys 10 for making the specific check according to the program.

Description

[Detailed Description of the Invention] The present invention provides a board checker that can easily check printed circuit boards (boards) with a simple configuration. This is related to this.

Various board checkers have been developed to inspect boards with built-in microprocessors, and one of them is one that performs inspection by comparing the data of good boards and the data of old sand check boards. be. However, conventional devices with this type of configuration generally have a complex structure, have a large number of keys, and operate the keys using common methods, so they require a high level of knowledge and skill to handle them. However, it had the disadvantage that it was not suitable for use by ordinary workers on production lines, etc.

This invention eliminates the above-mentioned drawbacks, and by configuring the check program and a plurality of keys specifically for board checking, even an unskilled worker with low technical knowledge can easily operate the system. The purpose of the present invention is to provide a one-board checker that displays accurate and efficient information and can increase productivity.

An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 shows the case body of this Chietsuka, and it is a must-have for 4+.
The board 2 is provided with a coupling board 2 for coupling in accordance with this, and a probe 3 for checking each part by contacting the points to be checked on the board. Further, the memory cartridge 4 can be removably installed.

On the upper part of the case body 1, there is a character display section 5 that displays check instructions and results in text, and a character display section 5 that displays check instructions and results in text, and displays, for example, an IJ display section that indicates the quality of the board when comparing a non-defective board and a board to be checked.
It is equipped with a pass/fail display section 6 that displays data by D, and a printer 7 that can automatically store data on failure locations.

The character display section 5 is provided with a two-level character display column using, for example, a liquid crystal display, and is used to sequentially display the hth check instruction and the result of 1,000 nicks.

The pass/fail determining unit 6 corresponds to each check point, and if the check result is determined to be "good", the green LEJ)
In addition, if it is judged as "fail" due to a malfunction, the red IJ'D
are lit to provide a visual indication of pass/fail.

The printer 7 is equipped with a character generator that functions as a memory for sending characters, and a thermal head, and records failure data for each checked point on thermal recording paper each time, and after the check is completed, it records the failure data on the thermal recording paper. It is possible to attach it to the board.

A checking program is housed inside the case body 1, and is used to maintain coordination with each of the above-mentioned parts.

A keyboard 9 is provided with a plurality of keys 10 for performing a predetermined check according to the program by pressing and n.

These keys 10 are dedicated to board checking and have the most two-way configuration.
As will be described in detail later, 0 is composed of a key for a specialist engineer to record data on a good board, and a child key for a general worker to perform a check, and has a learning function.

In response to the fact that the key 10 is provided in a simplified state, a program with an appropriate structure is naturally used, and a series of key operations performed by a professional engineer can be memorized in up to 256 steps. Then, simply by pressing the test key, the comparison will be performed exactly as instructed, allowing you to pinpoint defective areas in detail.

In FIG. 1, 11 is a power switch, 12 is a power plug, 20 is a non-defective board, and 21 is a nick board.

Figure 2 shows the relationship between the parts of the above configuration as an electrical block diagram, and Figure 3 is a detailed view showing the top surface of the case body 1. In FIGS. 2 and 3, for convenience of understanding, parts corresponding to those in FIG. 1 above are designated by the same reference numerals.

First, connect the connecting board 2 to the CPU of the good board 2o.
Connect it to the IC socket after removing the screw. The probe 3 is brought into contact with the check points of the non-defective board 2o one after another as necessary.

Here, by operating the key 1o of the keyboard 9, the control unit 8 is actuated to collect data of each part of the non-defective board 2o based on the check program stored therein, and store the collected data in, for example, RAM in the memory cartridge 4. let

Next, after connecting the switching board 2 to the c socket for the CPU of the board to be checked 21, press the key 10 of the keyboard 9.
, and start the check program of the computer control unit 8 to read the data of each part of the board 21 to be checked, the data of the non-defective board 2o stored in the boxes A and M in the memory cartridge 4. The control section 8c will now be compared.

As a result of the comparison, if there is no abnormality, that fact is displayed on the character display section 5, and the green TJD on the pass/fail display section 6 is lit. If there is an abnormality, the content is displayed on the character display section 51 (!: Recorded on the recording paper ζ from the printer 7ζζ. By attaching this, repairs etc. can be made to the child nick board 21 in a later process.

Next, various checks will be explained.

(1) “f-I” or @ on a specific bus line on the bus thousand nick board
(L" level will be output, and the level output by only other lines will be the same.) Passage or failure is determined based on the power 11. If it is defective, the voltage value is checked and the cause of the defect is analyzed.

The buses to be checked include a control bus, data bus, address bus, etc.

(2) After writing a specific pattern to the AM check board (AM), pass or fail is determined based on whether the pattern read out is the same as the one written.

! 31 j (, 0M Check R, For each certain range of OM, pop out a hood that specifies that part and compare it with that of a non-defective board to determine whether it is good or bad.

14) Check by Probe 3 The probe 3 is brought into contact with each check point of the board to be checked 21 one after another, and pass/fail is determined based on whether a signal of the same pattern as the non-defective board 20 is detected.

In the above description, keys have been expressed as 10, but next) 1. ff The individual keys will be explained based on Figure 3.

・As shown in detail in Figure 'g3, there is an all-in-one key 10-01 for professional engineers. Bus key 10-02゜Gift key 10-03. R and 0M keys 10-04 are provided, and good product data is recorded by operating these keys.

and nl, all child strike keys 10-05° bus keys 10-06. R, A, M keys 10-07. R
OM keys 1o-os are provided, and general workers operate these keys to perform the above-mentioned bus check, RAM 1,000-nicks check, and RfiM check.

10-09 is a command for professional engineers.When you first press this key 10-09 and then press the two keys 10-10, a character will be displayed on the character display section 5p, and the message ``Memory or Ilo?'' will be displayed. ?'', press memory key 10-26 and it will ask ``Light No) Riichido?'', so select one.

4 Now press the light key 10-27. ``Address?
J and 1+'l will come up, so enter the address.Next, it will ask "Data?", so enter the data.

After continuing such operations, press the end key 10-11 to finish. A general worker presses the command trace key 10-12, then the start key 10-16.
When you press , the check is automatically performed in the order in which the data was collected by a professional engineer on the non-defective boards, and the time for each display is, for example, 1 second, and the check is executed until the end, and the message ``End'' is displayed. On the way, press the stop key 10-14'f-
If you press it, it will be interrupted and the display will go into standby mode.If you press the two keys 10-13, r ICN00? J
(!: You will be prompted to enter the IC number. If you enter the wrong number, press the ζ clear key 10-57 to return to the previous state.

Next, enter the pin number of the IC. A flashing ``10-'' will be displayed, so if the negative active is active, press the minus key 10-16, and if the -j voltage is active, press the plus key 10-17 to enter the issue. "Probe start button!" will be displayed, so press the probe start key 10-15 after touching the probe to the check point. Repeat the same steps five times and end the process when the end key 10-20 is pressed. In this way, the combination controller 8 sequentially takes in the data of each check point of the non-defective board 20.
Let me tell you about the FCAM inside.

When a general worker performs a check using a probe, he or she first presses the probe trace key 10-21. In this way, the check points will be displayed on the controller display section 5 in the order in which the data was taken in by the operation of the specialized engineer, so the operator can place the probe 3 at the indicated check points and set the probe. By pressing the key 10-22, the data on the check board 21 can be obtained and the check points can be automatically checked. Repeat these operations until "End" is displayed. If the stop key 10-23 is pressed during the process, the process is interrupted and enters a standby state.

Note that FIG. 4 shows a flowchart in this case.

In FIG. 3, 10-30 is a data increment key for increasing data, 10-31 is an address increment key for increasing address, and 10-3
2 is a data decrement key to decrease data,
1o-33 is an address decrete key for decrementing the address.

The /1li-do checker employs a direct configuration in which the check program, multiple keys, display sections, etc. are dedicated to board checks, so writing data on good boards 20 can be done professionally. If this is done by an engineer, later operations will be easier.Even an unskilled worker with little technical knowledge can check the board appropriately and efficiently.

What's more, since this checker is equipped with a printer, it can automatically record the defective parts on a recording paper, and by attaching this to the corresponding board, you can be sure that the board will be repaired or taken other appropriate action. can be applied.

Moreover, since this board 1000 is condensed into a direct structure exclusively for board checking, it is significantly simplified and can significantly reduce costs.

(This invention is not limited to the above-described embodiments, and can be implemented with various modifications without changing the gist.

For example, in the above embodiment, each display section is configured to be visually confirmed, but instead, it may be configured to generate a sound and confirmed by hearing, or both may be used in combination. It is.

As described above, according to the present invention, by configuring the check program and a plurality of keys, etc. exclusively for board checking, even an unskilled worker with low technical knowledge can easily operate the system, and can easily locate defective parts. It is possible to provide a board with accurate and efficient display that can improve productivity.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a schematic configuration of an embodiment of the present invention, Fig. 2 is an electrical block diagram of the embodiment, and Fig. 3 is a block diagram showing the top surface of the case body of the embodiment. , Fig. 4 explains the operation of the same embodiment 3... Probe 4...
Memory cartridge 5...Character display section 6.
...Pass/fail display section 7...Printer 8...Computer control section 9...Keyboard 1.0...Key 11.
... Power switch 12 ... Power plug 20 ... Good board 21 ... Board to be checked 1st drawing 1 Fig. 2

Claims (1)

[Scope of Claims] m. A coupling board for coupling to a non-defective board or a board to be checked, a probe for contacting a point to be checked on the board, and a pump controller control unit containing a 1,000-nick program. a keyboard having a plurality of keys for driving the control unit; a memory cartridge having an internal memory for storing data of the non-defective board; A character display section that compares board data and displays the results in characters; a pass/fail display section that compares the data of the non-defective board and the data of the board being checked and displays the quality; 1. A board checker comprising: a printer for recording data at each location; and wherein the program and the plurality of keys are configured exclusively for board checking. (2) A patent claim characterized in that the above-mentioned keys are composed of a key for specialized engineers to record data on non-defective boards and a test key for general workers to perform checks, and have a learning function. The range of the first term is Hi-Ya's board. (3) Claims 1 or 2 characterized in that the computer control unit has a configuration that can support multiple types of CPU elements by combining a check program, a latch circuit, and a tri-state element. Board checker as described in section. (4) The pass/fail indicator has a green LED and a red LED, and if the check result is good, the green LED is
The board checker according to any one of claims 1 to 3, characterized in that a red LED is turned on in the event of a failure.