JP2007320286A - Fault notifying device and fault notifying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fault notifying device capable of discriminating an intermittent fault from a permanent fault occurring in a device to notify a user of a message corresponding to the fault, and a fault notifying method using the same. <P>SOLUTION: A fault detecting section 103 detects an occurrence of a fault and a fault discriminating section 104 discriminates the cause of the detected fault. Based on the results discriminated, when the cause of the fault is discriminated to be the intermittent fault, a message transmitting section 105 transmits a first message, while when the cause of the fault is discriminated to be the permanent fault, the message transmitting section 105 transmits a second message. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a failure notification device and a failure notification method, and more particularly, to a failure notification device and a failure notification method that can notify a user of a message corresponding to a failure by distinguishing between an intermittent failure and a permanent failure.

  Conventionally, when various types of failures occur in an image forming apparatus or a personal computer having a printing function, there is a system that contacts a service center and requests maintenance personnel to handle the failure in order to deal with the failure.

  Among image forming devices, laser printers and other devices that use extremely high voltages cause a significant increase in temperature in the device with continuous use, and the soldered portion deteriorates and cracks due to thermal fatigue. In some cases, the continuity failure of the part occurs and the hardware falls into a failure.

  Such a hardware failure may occur in various hardware in the apparatus, and is positioned as a permanent failure that requires replacement work by maintenance personnel.

  In addition, hardware in the apparatus may cause malfunction due to unnecessary electromagnetic noise and static electricity.

  Such hardware malfunctions are often restored to normal operation by restarting the apparatus, and are positioned as intermittent faults in distinction from permanent faults.

  Conventionally, when an error message is notified to a user, an intermittent failure and a permanent failure are not distinguished from each other. When a failure occurs in a device, a single error is not distinguished between the intermittent failure and the permanent failure. A message was displayed to convey fault information.

  Here, a conventional failure notification method for transmitting failure information to the user will be described with reference to FIG.

  FIG. 5 is a flowchart showing a processing flow of a failure notification method for transmitting failure information to a user.

  First, when a failure is detected in the apparatus (step 501), the following message is transmitted and displayed on the control panel to notify the user of the message (step 502).

  “Call XX has occurred. Call XX is a fatal error. Turn off the power and restart the system. For repair of call XX, please contact the following maintenance diagnosis desk.”

  In many cases, the user who confirmed the message received a serious failure and contacted the maintenance diagnosis window, leading to an increase in maintenance diagnosis costs.

  Even if maintenance personnel are dispatched from the maintenance diagnosis window, there are many cases of intermittent failures, so the response is often “please see again”.

  This is because failure information is transmitted to the user without distinguishing between intermittent failure and permanent failure.

As a method for transmitting failure information in response to a failure of a device, Patent Document 1 discloses that when an abnormal event or abnormal advance information occurs in a copying apparatus, the occurrence information is transmitted to a management device connected via a communication line. The image forming apparatus service system is described in which the management apparatus that has received the message analyzes the occurrence information to predict the occurrence of a failure and the necessity of a serviceman's visit and to contact the terminal device at the service base.
JP 2003-215986 A

  With the technology of this patent document 1, it is possible to determine whether or not it is necessary to dispatch a serviceman by managing abnormality information of the copying apparatus, etc., and by analyzing the pre-abnormal information, it is possible for the serviceman to accurately determine the occurrence of a fatal failure. However, a management system connected to the copying machine via a communication line is required, and a complicated system configuration is required.

  Therefore, the present invention identifies whether a failure occurring in a device is a permanent failure that requires dispatch of a service person or an intermittent failure that does not require dispatch of a service person without requiring a complicated system configuration. It is an object of the present invention to provide a failure notification device and a failure notification method that can notify a user of a message corresponding to a failure that distinguishes a failure from a permanent failure.

  In order to achieve the above object, the invention according to claim 1 is characterized in that a failure occurrence detection means for detecting the occurrence of a failure, an identification means for identifying a cause of the failure detected by the failure occurrence detection means, and an identification means A first notification means for notifying a first message corresponding to the cause of the failure, and a second message when the occurrence of the failure detected by the failure occurrence detection means exceeds a preset threshold. It is set as the failure alerting device characterized by comprising a 2nd alerting means.

  According to a second aspect of the present invention, in the first aspect of the invention, the identification unit identifies an intermittent failure that is recovered by a restart after turning off the power, and the first notification unit includes the first notification unit. A message indicating that the intermittent failure has occurred is generated as a message.

  The invention according to claim 3 is the invention according to claim 1, wherein the second notification means notifies the second message when the number of occurrences of the failure exceeds a preset threshold value. And

  According to a fourth aspect of the present invention, in the first aspect of the invention, the second notification means notifies the second message when the failure occurrence interval exceeds a preset threshold value. And

  According to a fifth aspect of the present invention, a failure occurrence detection means for detecting the occurrence of a failure and a self-diagnosis program corresponding to the detected failure is activated in response to detection of the occurrence of the failure by the failure occurrence detection means. A self-diagnosis program starting unit; a first determination unit that determines whether or not there is an abnormality by the self-diagnosis program; and the failure occurrence detection unit when the first determination unit determines that there is no abnormality. A second determination unit that determines whether or not the occurrence of the failure detected in step 1 exceeds a preset threshold value, and the first determination unit determines that there is no abnormality, and the second determination unit determines the threshold value. If it is determined that the value does not exceed the first determination unit, the first determination unit that notifies the first message and the first determination unit determine that there is an abnormality or the second determination unit. When it is determined that exceeds the threshold value, the fault notification apparatus characterized by comprising a second informing means for informing the second message.

  The invention of claim 6 is characterized in that, in the invention of claim 5, the second determining means determines whether or not the number of occurrences of the failure exceeds a preset threshold value.

  The invention of claim 7 is characterized in that, in the invention of claim 5, the second determining means determines whether or not the occurrence interval of the fault exceeds a preset threshold value.

  In the invention according to claim 8, the occurrence of a failure is detected by the failure occurrence detection means, the cause of the failure detected by the failure occurrence detection means is identified by the identification means, and the failure factor identified by the identification means is determined. Correspondingly, the first message is notified by the first notification means, and the second message is notified by the second notification means when the occurrence of the failure detected by the failure occurrence detection means exceeds a preset threshold value. It is set as the failure notification method characterized by doing.

  According to a ninth aspect of the present invention, the occurrence of a failure is detected by a failure occurrence detection means, and a self-diagnosis program corresponding to the detected failure is self-diagnosed in response to the detection of the occurrence of the failure by the failure occurrence detection means. The failure occurrence detecting means is activated by the program starting means, the first determining means determines whether there is an abnormality by the self-diagnostic program, and the first determining means determines that there is no abnormality. It is determined by the second determining means whether or not the occurrence of the failure detected in the step exceeds a preset threshold value, it is determined that there is no abnormality by the first determining means, and the threshold value is determined by the second determining means. The first message is notified by the first notification means, and the first determination means determines that there is an abnormality or the second determination When it is determined that exceeds the threshold by the step, the fault notification method characterized by a second message informing the second informing means.

  According to this invention, the failure occurrence detection means for detecting the occurrence of the failure, the identification means for identifying the cause of the failure detected by the failure occurrence detection means, and the first cause corresponding to the failure cause identified by the identification means A first notification unit that notifies a message; and a second notification unit that notifies a second message when the occurrence of a failure detected by the failure occurrence detection unit exceeds a preset threshold. As a result, it is possible to notify the user of a message corresponding to the failure by distinguishing between the intermittent failure and the permanent failure, and when the intermittent failure occurs, the useless message prompting the maintenance diagnosis service is not sent, and the user is notified when the intermittent failure occurs. There is an effect that it is possible to reduce extra maintenance diagnosis costs such as using the maintenance diagnosis service.

  Hereinafter, embodiments of a failure notification device and a failure notification method according to the present invention will be described in detail with reference to the accompanying drawings.

  First, an image forming apparatus will be described as an example of an apparatus related to the failure notification apparatus and failure notification method of the present invention.

  FIG. 1 is a schematic diagram illustrating a functional configuration of an image forming apparatus 100 according to a failure notification device and a failure notification method of the present invention.

  The image forming apparatus 100 includes an operation / display unit 101, a control unit 102, a storage unit 106, a printing unit 107, and a communication unit 108.

  The control unit 102 further includes a failure detection unit 103, a failure identification unit 104, and a message transmission unit 105 as its functions.

  The operation / display unit 101 is configured by a liquid crystal control panel, and displays various messages about failure information and various messages from the image forming apparatus 100 to the user, and commands necessary for operating the image forming apparatus 100 from the user. Accept.

  The control unit 102 is configured by hardware such as a processor and software or firmware for operating the hardware, and performs overall control of the image forming apparatus 100.

  The control unit 102 includes a failure detection unit 103, a failure identification unit 104, and a message transmission unit 105 in its functional configuration.

  A failure detection unit 103 provided in the control unit 102 identifies and detects a failure that has occurred in the image forming apparatus 100 for each type.

  The failure identification unit 104 provided in the control unit 102 calculates the occurrence frequency, occurrence frequency, and occurrence interval of the failure that occurred in the image forming apparatus 100, and determines whether or not the calculated value exceeds each threshold value. Identify whether it is intermittent or permanent.

  The message transmission unit 105 provided in the control unit 102 notifies the user of a message for responding to the generated failure by transmitting a message for responding to the generated failure and displaying the message on the operation / display unit 101. .

  In addition, the message to be notified to the user transmits the first message and the second message according to the situation where the failure occurs (the first message and the second message will be described in detail later).

  The storage unit 106 includes an HDD (Hard Disk Drive), various ROMs (Read Only Memory), and various RAMs (Random Access Memory), and stores a self-diagnosis program used in the second embodiment.

  The printing unit 107 is a print engine that executes printing.

  The communication unit 108 is configured with a Centronics specification parallel port, and is connected to a communication line through which the image forming apparatus 100 communicates with the outside.

  Hereinafter, a failure notification method performed in the image forming apparatus 100 will be described.

  First, a processing flow performed in the image forming apparatus 100 will be described with reference to FIG.

  FIG. 2 is a flowchart showing a processing flow of processing performed in the image forming apparatus 100 according to the present invention.

  When a failure occurs in the image forming apparatus 100 (for example, a malfunction of a dynamic random access memory (DRAM)) and is detected by the failure detection unit 103 (step 201), the number of times that the failure has occurred is a preset threshold value. The fault identification unit 104 determines whether or not the threshold is exceeded (step 202).

  For example, if the failure threshold is set to 5, when the failure first occurs, the number of failures that occurred is 1 and has not yet exceeded the threshold, so the number of failures that have occurred still exceeds the threshold. It is determined that the failure has not occurred (NO in step 202), and the failure that has occurred is identified as an intermittent failure, and the process proceeds to step 203.

  Then, in order to notify the user of the occurrence of the failure, the message transmission unit 105 transmits the following first message and displays the first message on the operation / display unit 101 to notify the user of the first message. (Step 203).

  "Intermittent HW failure has occurred. Sorry, please turn off the power and restart."

  Thus, the first message is a message corresponding to the intermittent failure.

  In general, failure of conduction failure due to solder cracks, intermittent failures occur intermittently, the interval of occurrence gradually decreases, cracks in the solder defective part and falls into conduction failure, resulting in permanent failure, A first message corresponding to the intermittent failure is notified at the first time when the failure occurs, and a second message corresponding to the permanent failure is notified when a failure occurs when the number of failures exceeds a threshold. Like that.

  The process of step 202 is a process of checking the number of failures that occurred in step 201 and identifying whether the failure that occurred in step 201 is an intermittent failure or a permanent failure.

  Further, the processing in step 202 is not the number of occurrences of the failure that occurred in step 201 but the occurrence frequency and occurrence interval, and the calculated occurrence frequency exceeds the threshold or the calculated occurrence interval is shorter than the threshold. By determining whether or not the failure has occurred, it may be identified whether the failure generated in step 201 is an intermittent failure or a permanent failure.

  As the occurrence frequency, the number of failures that occurred within a certain period (for example, one day) is calculated and the calculated value is used as the occurrence frequency. However, the occurrence frequency may be calculated by other methods.

  For the occurrence interval, calculate the time from the failure that occurred last time to the failure that occurred this time (failure that occurred in step 201), and use the calculated value as the occurrence interval, but calculate the occurrence interval in other ways. May be.

  As described above, after the first message is transmitted in step 203, the control unit 102 records the type and occurrence time of the failure that occurred in step 201 in the storage unit 106.

  Then, the image forming apparatus 100 is restarted by the user who confirmed the first message, and starts to be used again.

  In step 202, if the number of failures that occurred has exceeded the threshold value 5 at the sixth time, for example, it is determined that the number of failures has exceeded the threshold value (YES in step 202), and an occurrence has occurred. The failure is identified as a permanent failure, and the message sending unit 105 sends the second message as follows to display the second message on the operation / display unit 101 to notify the user of the second message ( Step 204).

  “HW permanent failure has occurred. For repair, please consult with the following maintenance diagnostic window.”

  Thus, the second message is a message corresponding to a permanent failure.

  When the second message corresponding to the permanent failure is displayed on the operation / display unit 101, the user contacts the maintenance diagnosis window and requests the dispatch of maintenance personnel.

  By processing in this way, a message to contact the maintenance diagnosis window is not sent to the maintenance diagnosis window even if it is an intermittent failure, but is identified as a permanent failure based on the number of failures, etc. Since the information is displayed, the user does not receive a serious failure every time an intermittent failure occurs and contacts the maintenance diagnosis window, and the maintenance diagnosis cost can be reduced.

  Note that when identifying whether the failure is intermittent or permanent in step 202, the number of occurrences, occurrence frequency, and occurrence interval of the failure are not identified separately, but the occurrence frequency, occurrence frequency, and occurrence interval of the failure. May be used in combination with the AND condition and the OR condition to identify whether the fault is intermittent or permanent.

  In this embodiment, the image forming apparatus 100 is described as an example of the apparatus related to the failure notification apparatus and the failure notification method. However, the apparatus related to the failure notification apparatus and the failure notification method of the present invention is only the image forming apparatus 100. However, the present invention is applicable to any device (for example, a personal computer) in which intermittent failures and permanent failures occur in hardware.

  Next, in the present embodiment, a failure notification device and a failure notification method will be described, in which a process for diagnosing a device failure by activating a self-diagnosis program when a failure occurs is further described in the first embodiment.

  FIG. 3 is a flowchart showing a processing flow when the self-diagnosis program is started and processing is performed in the image forming apparatus 100 according to the present invention.

  When a failure occurs in the image forming apparatus 100 (for example, malfunction of the DRAM) and is detected by the failure detection unit 103 (step 301), the control unit 102 stores the hardware in the image forming apparatus 100 stored in the storage unit 106. A self-diagnosis program for diagnosing a hardware failure is started (step 302).

  The contents of the self-diagnosis program will be described in detail later with reference to the drawings.

  The control unit 102 determines whether or not a failure is found by the self-diagnostic program (the process in step 303, which corresponds to the process by the first determination unit described in the claims), and in the image forming apparatus 100. If a failure is found in the hardware (NO in step 303), the message sending unit 105 sends a second message corresponding to a permanent failure that prompts the user to contact the maintenance diagnosis window, and the operation / display unit The second message is displayed on 101, and the second message is notified to the user (step 304).

  The second message is the same as that described in the first embodiment, and is “HW permanent failure has occurred. For repair, please consult with the following maintenance diagnostic window”.

  When the second message corresponding to the permanent failure is displayed, the user contacts the maintenance diagnosis window and requests the dispatch of maintenance personnel.

  If no failure is found in the hardware in the image forming apparatus 100 as a result of the diagnosis by the self-diagnosis program started in step 302 (YES in step 303), the number of failures that occurred in step 301 is Whether or not a preset threshold value has been exceeded is identified by the failure identification unit 104 (the process in step 305, which corresponds to the process by the second determination means described in the claims).

  The processing performed in step 305 corresponds to the processing in step 202 described in the first embodiment, and is a processing for identifying whether the failure generated in step 301 is an intermittent failure or a permanent failure.

  Further, the processing in step 305 is to determine whether or not the number of occurrences of the failure that occurred in step 301 has exceeded the set threshold value. Similarly to 1, it may be determined whether or not the occurrence frequency of the failure that occurred in step 301 exceeds a certain threshold value, and the occurrence interval of the failure that occurred in step 301 is constant. It may be determined whether or not it has become shorter than the threshold.

  As the occurrence frequency, the number of failures that occurred within a certain period (for example, one day) is calculated and the calculated value is used as the occurrence frequency. However, the occurrence frequency may be calculated by other methods.

  For the occurrence interval, calculate the time from the failure that occurred last time to the failure that occurred this time (failure that occurred in step 301) and use the calculated value as the occurrence interval, but calculate the occurrence interval in other ways. May be.

  When the number of occurrences of the failure that has occurred does not exceed the set threshold value due to the processing performed in step 305 (NO in step 305), the message transmission unit 105 handles the intermittent failure as described below. The first message is transmitted, the first message is displayed on the operation / display unit 101, and the user is notified of the first message (step 306).

  “Intermittent HW failure has occurred. Sorry, please turn off the power and restart.”

  In this way, by notifying the user of the first message that does not include the content to be communicated to the maintenance diagnosis counter, even if an intermittent failure occurs, it is not necessary to notify the user of a message that prompts the maintenance diagnosis counter to contact the maintenance diagnosis counter. .

  Also, as a result of the determination in step 305, if the number of failures that have occurred in step 301 exceeds the threshold (YES in step 305), the message sending unit 105 should contact the maintenance diagnosis counter. A second message prompting the user is transmitted, the second message is displayed on the operation / display unit 101, and the second message is notified to the user (step 304).

  As described above, when a failure occurs, the self-diagnostic program is activated to diagnose a hardware failure in the image forming apparatus 100. Therefore, the hardware failure state after the failure has occurred as compared with the processing performed in the first embodiment. Can be clearly confirmed, the occurrence of a permanent failure can be confirmed, the second message can be notified to the user, and the maintenance diagnosis window can be contacted.

  Next, the self-diagnosis program started in step 302 will be described with reference to FIG.

  FIG. 4 is a flowchart showing the processing flow of the self-diagnosis program performed in the subroutine of step 302 of the flowchart described with reference to FIG.

  When a failure occurs in the image forming apparatus 100, a self-diagnosis program for diagnosing a hardware failure in the image forming apparatus 100 is started in the subroutine of step 302 as described with reference to FIG.

  When the self-diagnosis program is started, first, the user is prompted to input a password for starting the self-diagnosis program, and the password is input (step 401).

  When a password is input by the user (step 401), a self-diagnosis program is started, and a code ROM (Code Read Only Memory) test is first performed (step 402).

  In the CodeROM test, a checksum is calculated for each CodeROM chip, and a value stored in the CodeROM itself is compared with the calculated value to determine that the CodeROM is normal.

  If the result of the CodeROM test is normal (YES in step 403), then a FontROM (Font Read Only Memory) test is performed (step 404).

  In the font ROM test, a checksum is calculated for each chip of the font ROM, and the value stored in the font ROM itself is compared with the calculated value to determine that the font ROM is normal.

  If the result of the FontROM test is normal (YES in step 405), then an EEPROM (Electrically Erasable and Programmable Read Only Memory) test is performed (step 406).

  In the EEPROM test, diagnostic information is written into the EEPROM diagnostic area and then read to check whether the written information is read correctly.

  If the result of the EEPROM test is normal (YES in step 407), the DRAM test is performed next.

  In the DRAM test, in order to confirm whether the address line of the DRAM is open or short, the diagnostic information is written on the entire surface of the DRAM and then read to check whether the written information is read correctly. Done.

  If the result of the DRAM test is normal (YES in step 409), then a centro test is performed (step 410).

  The centro test is performed by a local loopback test in order to check whether or not the centronics parallel port operates correctly.

  If the result of the centro test is normal (YES in step 411), then a net test is performed (step 412).

  The net test is performed by executing a net loopback test on a device connected to the image forming apparatus 100 via a communication line.

  If the result of the net test is normal (YES in step 413), then an ASIC (Application Specific Integrated Circuit) test is performed (step 414).

  The ASIC test is performed by executing an ASIC check test to determine whether the ASIC operates correctly as designed.

  If the result of the ASIC test is normal (YES in step 415), then an engine test is performed (step 416).

  The engine test is performed by executing a communication test to determine whether the print engine of the image forming apparatus 100 operates correctly.

  If the engine test result is normal (YES in step 417), the HDD test is then performed (step 418).

  The HDD test is performed by executing a hard disk test to determine whether the hard disk in the image forming apparatus 100 operates normally and is not damaged.

  If the result of the HDD test is normal (YES in step 419), the process then proceeds to step 303 of the flowchart described with reference to FIG. 3, and all the test results by the self-diagnostic program are normal. In step 303, which is an option in this case, the process proceeds from step YES to step 305.

  If any test result shows that the result is not normal (NO in any of steps 403, 405, 407, 409, 411, 413, 415, 417, and 419), then refer to FIG. The process proceeds to step 303 of the flowchart described above, and the process proceeds from step NO to step 304 in step 303, which is an option when all the test results by the self-diagnostic program are not normal. The unit 105 transmits the second message, causes the operation / display unit 101 to display the second message, and notifies the user of the second message.

  As described above, in this embodiment, when a failure occurs, a self-diagnosis program for diagnosing a hardware failure in the image forming apparatus 100 is started, and if the hardware failure is confirmed, the first corresponding to the permanent failure is detected. 2 message is notified to the user, and even if the hardware failure cannot be confirmed, the second message is notified to the user if the number of failures that have occurred exceeds the threshold, and the number of failures that have occurred exceeds the threshold. If not, the first message for dealing with the intermittent failure is notified to the user. Therefore, when the hardware is out of order as compared with the failure transmission method according to the first embodiment, the second is surely dealt with the permanent failure. This message can be notified to the user.

  Note that when identifying whether the failure is intermittent or permanent in step 305, the number of occurrences, occurrence frequency, and occurrence interval of the failure are not used for identification, but the occurrence frequency, occurrence frequency, and occurrence interval of the failure. May be used in combination with the AND condition and the OR condition to identify whether the fault is intermittent or permanent.

  Note that the self-diagnostic program executed in the subroutine of step 302 of the flowchart described with reference to FIG. 3 is not limited to that described with reference to FIG. 4, but is tested with the flowchart described with reference to FIG. A self-diagnosis program for diagnosing faults in hardware (for example, hardware related to the power supply system) in the image forming apparatus 100 other than hardware to be performed may be executed.

  In this embodiment, the image forming apparatus 100 is described as an example of the apparatus related to the failure notification apparatus and the failure notification method according to the present invention. However, the apparatus related to the failure notification apparatus and the failure notification method of the present invention is configured to perform image formation. The present invention is applicable not only to the apparatus 100 but also to an apparatus (for example, a personal computer) in which intermittent failures and permanent failures occur in hardware.

  The present invention can be used in an apparatus in which failure occurring in the apparatus is an intermittent failure and a permanent failure, and maintenance personnel are dispatched through a maintenance diagnosis window in response to the failure that has occurred.

  According to the present invention, when a failure occurs in the apparatus, the user is notified of a message that distinguishes between an intermittent failure and a permanent failure, thereby preventing the user from contacting an unnecessary maintenance diagnosis window.

1 is a schematic diagram illustrating a functional configuration of an image forming apparatus 100. FIG. 3 is a flowchart showing a processing flow in the image forming apparatus 100. 4 is a flowchart illustrating a processing flow when a self-diagnosis program is activated and processing is performed in the image forming apparatus 100. The flowchart which shows the processing flow of a self-diagnosis program. The flowchart which shows the processing flow of the conventional failure alerting | reporting method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Image forming apparatus 101 Operation / display part 102 Control part 103 Fault detection part 104 Fault identification part 105 Message transmission part 106 Storage part 107 Printing part 108 Communication part

Claims (9)

A failure detection means for detecting the occurrence of a failure;
Identifying means for identifying the cause of the failure detected by the failure occurrence detecting means;
First informing means for informing the first message corresponding to the cause of the failure identified by the identifying means;
A failure notification device comprising: a second notification unit that notifies a second message when the occurrence of a failure detected by the failure occurrence detection unit exceeds a preset threshold value. The identification means includes
Identify intermittent failures that recover from a restart after turning off the power,
The first notification means includes
The failure notification device according to claim 1, wherein a message indicating that the intermittent failure has occurred is generated as the first message. The second notification means includes:
The failure notification device according to claim 1, wherein the second message is notified when the number of occurrences of the failure exceeds a preset threshold. The second notification means includes:
The failure notification device according to claim 1, wherein the second message is notified when the occurrence interval of the failure exceeds a preset threshold. A failure detection means for detecting the occurrence of a failure;
Self-diagnosis program starting means for starting a self-diagnosis program corresponding to the detected failure in response to detection of the occurrence of the failure by the failure occurrence detecting means;
First determination means for determining whether there is an abnormality by the self-diagnosis program;
A second determination unit that determines whether or not the occurrence of a failure detected by the failure occurrence detection unit exceeds a preset threshold when it is determined by the first determination unit that there is no abnormality;
A first notifying means for notifying the first message when the first determining means determines that there is no abnormality and the second determining means determines that the threshold is not exceeded;
A second notifying means for notifying a second message when the first determining means determines that there is an abnormality or when the second determining means determines that the threshold is exceeded; A failure notification device provided. The second determining means includes
The failure notification device according to claim 5, wherein it is determined whether or not the number of occurrences of the failure exceeds a preset threshold value. The second determining means includes
The failure notification device according to claim 5, wherein it is determined whether or not the failure occurrence interval exceeds a preset threshold value. While detecting the occurrence of failure by means of failure occurrence detection means,
Identify the cause of the failure detected by the failure occurrence detection means by the identification means,
In response to the cause of the failure identified by the identification means, a first message is notified by the first notification means,
A failure notification method in which the second notification unit notifies the second message when the occurrence of a failure detected by the failure occurrence detection unit exceeds a preset threshold. The occurrence of a failure is detected by the failure occurrence detection means,
In response to detection of the occurrence of the failure by the failure occurrence detection means, a self-diagnosis program corresponding to the detected failure is started by the self-diagnosis program start means,
It is determined by the first determination means whether there is an abnormality by the self-diagnosis program,
When it is determined by the first determination means that there is no abnormality, the second determination means determines whether or not the occurrence of the failure detected by the failure occurrence detection means exceeds a preset threshold value,
When it is determined that there is no abnormality by the first determination unit and it is determined that the threshold value is not exceeded by the second determination unit, a first message is notified by the first notification unit,
When the first determination unit determines that there is an abnormality or when the second determination unit determines that the threshold value is exceeded, the second notification unit notifies the second message. Method.

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