JP3558841B2 - Maintenance system - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a maintenance system that performs a maintenance operation according to the state of a maintenance target device such as a copying machine that requires the maintenance operation.
[0002]
[Prior art]
In a maintenance target device such as a copying machine that requires a maintenance operation, a maintenance system is configured to detect an operation state and the like from the maintenance target device and execute the maintenance operation according to the detected operation state and the like. For example, in a maintenance system in which a copying machine is connected to a center via a network such as a public telephone line, when the occurrence of a trouble in the copying machine is detected, the occurrence of the trouble is reported to the center.
[0003]
When a trouble occurs in the copier that constitutes such a maintenance system, first, the operator of the center that has been notified of the trouble has identified a service person and notified of the trouble, and has received the service. The man went to the copier to perform necessary maintenance work.
[0004]
[Problems to be solved by the invention]
However, in the conventional maintenance system, the operator of the center who has been notified of the occurrence of the trouble searches for a service person who is closest to the installation location of the maintenance target device in which the trouble occurred, and notifies the service person of the occurrence of the trouble. Because of the communication, it takes a long time before the maintenance work is performed, and there is a problem that the operation efficiency of the maintenance target device is reduced.
[0005]
Also, in conventional maintenance work, it is difficult to detect the cause of the trouble and notify the service person in advance, so the service man who went to the maintenance target device where the trouble occurred identifies the cause of the trouble and The maintenance work required for the solution is determined, but not all service personnel have all the parts required for the maintenance work, and the maintenance work for the maintenance target device that has caused the trouble When a participant needs to replace parts, the serviceman who went to the maintenance target equipment where the trouble occurred may not have the parts necessary for maintenance work. There is a problem that execution of work is further delayed.
[0006]
In particular, in a maintenance system including a conventional copying machine, whether the occurred trouble is a relatively minor trouble that can be dealt with by the user or a relatively serious trouble that requires service person's work. There is no means for determining whether the trouble has occurred, and in the event of a trouble, a service person always goes to the copying machine to check the contents of the trouble. For this reason, the service person is frequently located at the place where another copier is installed, and the number of service people who can go to the copier where a new trouble has occurred decreases, or from the time of occurrence of the trouble until the service man goes to There is also a problem that the service is deteriorated, for example, it takes a long time.
[0007]
An object of the present invention is to selectively contact one of a plurality of service personnel according to the content of a trouble that has occurred in a maintenance target device or a trouble occurrence situation such as an installation location of the maintenance target device that has caused the trouble. Another object of the present invention is to provide a maintenance system that can shorten the time required from the occurrence of a trouble to the execution of a maintenance operation to improve the operation efficiency of the maintenance target device and improve the service for the user.
[0008]
[Means for Solving the Problems]
The invention described in claim 1 requires maintenance work by a serviceman when a trouble occurs.CopierAnd a portable terminal carried by a serviceman, and a maintenance system connected to a center device via a network,
CopierA trouble detection unit that detects the occurrence of trouble in the
CopierAn installation location storage unit that stores the installation locations of the
A serviceman management unit that manages the current location of the serviceman,
The trouble detection unit has detected the occurrence of a trouble based on the storage contents of the installation location storage unit and the management contents of the serviceman management unit.CopierA serviceman search unit that searches for the serviceman closest to
To the serviceman's mobile terminal searched by the serviceman search sectionCopierA transmission unit for transmitting a maintenance instruction of
A possessed parts management unit that manages the possession status of parts by service personnel;
Including a trouble diagnosis unit that diagnoses the content of the trouble detected by the trouble detection unit,
The serviceman search unit is configured to execute the trouble of the copier based on the diagnosis result of the trouble diagnosis unit, the storage contents of the installation location storage unit, the management contents of the serviceman management unit, and the management contents of the possessed parts management unit. Search for the service technician who is closest to the copier in which the trouble occurred among the service technicians who have parts corresponding to the contents ofIt is characterized by the following.
[0009]
In the invention described in claim 1,CopierWhen a trouble occurs, the serviceman search departmentCopierIs searched for a serviceman who is closest to the serviceman, and a maintenance command is transmitted from the transmission unit to the portable terminal carried by the searched serviceman. Therefore, when trouble occursCopierThe maintenance order is automatically issued to the service person who takes the shortest time to go to the service person, and the time required for searching for the service person is reduced.
Further, the serviceman carrying the portable terminal to which the maintenance command is to be transmitted is searched from the installation location of the copier where the trouble occurred, the content of the trouble occurred, the current position of the serviceman, and the parts owned by the serviceman. . Therefore, when a trouble occurs in the copying machine, the service technician who is closest to the service technician among the service technicians who carry parts corresponding to the content of the trouble that has occurred goes to the copying machine. Maintenance work is performed more reliably.
[0010]
The invention described in claim 2 is characterized in that the serviceman management unit manages the current position of the serviceman based on a predetermined moving schedule. According to the second aspect of the present invention, the service located closest to the maintenance target device in which the trouble has occurred is determined based on the installation location of the maintenance target device in which the trouble has occurred and the predetermined moving schedule of the serviceman. Man is searched. Therefore, when a trouble occurs in the maintenance target device, a service person located closest to the maintenance target device on the transfer schedule is easily and quickly searched.
[0011]
The invention described in claim 3 is characterized in that the serviceman management unit manages the current position of the serviceman based on a signal transmitted from the mobile terminal to the network.
[0012]
According to the third aspect of the present invention, a serviceman located closest to the maintenance target device in which the trouble has occurred can be determined based on the installation location of the maintenance target device in which the trouble has occurred and the signal transmitted from the mobile terminal. Searched. Therefore, when a trouble occurs in the maintenance target device, the serviceman located closest to the maintenance target device is more accurately searched.
[0015]
Claim4The invention described in (1) includes a trouble determination unit in which the trouble detection unit determines the necessity of maintenance work by a serviceman based on the diagnosis result of the trouble diagnosis unit, and the trouble detection unit A serviceman search unit and a transmission selection unit for selectively enabling the transmission unit.
[0016]
Claim4In the invention described in (1), the search for the serviceman and the transmission of the maintenance instruction are selectively performed based on the result of the determination on the necessity of the maintenance work by the serviceman in the trouble determination unit. Therefore, a minor trouble occurredCopierThere is no service person to go to.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a copier will be described as an example of a maintenance target device. FIG. 1 is a diagram showing a basic configuration of a maintenance system according to an embodiment of the present invention. The maintenance system 10 of the present invention is configured by connecting a copier 1, a portable tool 2, and a center server 3 to a network 4 via modems 5a to 5c. The network 4 is, for example, a public telephone line network. In particular, the network 4 is wirelessly connected to the portable tool 2 via a portable telephone line or a PHS line.
[0018]
As shown in FIG. 2, the copying machine 1 includes an operation panel unit 14, an ADF load device 15, an optical system load device 16, a process unit load device 17, a paper transport unit load device 18, and a CPU 11 having a ROM 12 and a RAM 13. It is configured by connecting the sensor 19 and the modem 5a. The operation panel unit 14 includes a display and key switches arranged on the upper surface of the main body of the copying machine 1, displays display data output from the CPU 11 on the display, and inputs operation data of the key switches to the CPU 11.
[0019]
The ADF load device 15 is a transport belt for transporting the documents placed on the document tray to the upper surface of the document table one by one in an ADF (automatic document feeder) mounted on the upper surface of the document table of the copying machine 1. And a motor, a clutch, a switch, and the like for selectively supplying rotation to the feeding roller. The optical system load device 16 reciprocates a lamp for exposing the image surface of the document conveyed to the upper surface of the document table, and a mirror for distributing reflected light from the lamp and the document to the photoreceptor to the lower surface of the document table. It is composed of a motor, a clutch and the like.
[0020]
The process unit load device 17 includes a charger for forming an electrostatic latent image based on the light distribution of the original reflected light on the surface of the photoconductor, and a developer image in which the electrostatic latent image is visualized on the surface of the paper. It is composed of a high-voltage power supply for applying a high voltage to a charger for transfer, a motor for rotating a photoconductor, and the like. The paper transport unit load device 18 includes a clutch for selectively supplying rotation to a paper feed roller, a transport roller, and a transport belt for transporting the paper from the paper feed unit to the paper discharge unit via the process unit and the fixing unit. It is composed of a solenoid.
[0021]
The sensor 19 detects the transport state of the document in the ADF and the transport state of the paper in the paper transport unit, and operates the ADF load device 15, the optical system load device 16, the process unit load device 17, and the paper transport unit load device 18. Is detected, and a detection signal is input to the CPU 11. The modem 5a connects the CPU 11 to the public telephone network 4 as described above.
[0022]
The CPU 11 controls the above input / output devices according to a program written in the ROM 12 in advance. Data input / output in this control is temporarily stored in a predetermined memory area of the RAM 13. The ROM 12 includes a program for controlling each input / output device, a program for determining the occurrence of a trouble based on the detection signal input from the sensor 19, and the content of the trouble, and a modem 5a when the trouble occurs. And a program for automatically calling the center server 3 to the public telephone line network 4 via the Internet. That is, the CPU 11 corresponds to the trouble detection unit and the trouble diagnosis unit of the present invention. The self-diagnosis processing and the automatic call processing to the public telephone network 4 relating to the determination of the occurrence of the trouble and the determination of the content of the trouble are conventionally known techniques.
[0023]
When the CPU 11 determines that a trouble has occurred in the copying machine 1 based on the detection signal input from the sensor 19, the CPU 11 creates trouble data including at least a copying machine ID for specifying the copying machine 1 and sends the trouble data to the modem 5a. Output. The modem 5a transmits the trouble data input from the CPU 11 to the center server 3 via the public telephone network 4.
[0024]
As shown in FIG. 3, the portable tool 2 is configured by connecting a display 24, a keyboard 25, and a modem 5b to a CPU 21 having a ROM 22 and a RAM 23. The display 24 includes, for example, an LCD, and displays display data input from the CPU 21 via the interface 26. The keyboard 25 inputs operation data based on the key operation of the serviceman to the CPU 21 via the interface 27. As the keyboard 25, a touch switch arranged on the upper surface of the display 24 can be used. The modem 5b wirelessly connects the CPU 21 to the public telephone network 4 as described above.
[0025]
The CPU 21 controls the display 24 and the keyboard 25 according to a program written in the ROM 22 in advance. Data input / output in this control is temporarily stored in a predetermined memory area of the RAM 23. The modem 5b receives the center transmission data transmitted from the center server 2 and inputs the data to the CPU 21. The CPU 21 creates display data based on the center transmission data input from the modem 5b. The CPU 21 creates terminal transmission data based on the operation data input from the keyboard 25, and outputs the data to the modem 5b. When the terminal transmission data is input from the CPU 21, the modem 5b calls the center server 3 to the public telephone line network 4 and transmits the terminal transmission data.
[0026]
As shown in FIG. 4, the center server 3 is configured by connecting a copying machine installation location memory 34, a movement schedule memory 35, and a modem 5c to a CPU 31 having a ROM 32 and a RAM 33. As shown in FIG. 5A, the copier installation location memory 34 stores the address of the installation location for each of the plurality of copiers 1-1, 1-2,... I remember. As shown in FIG. 5B, the movement schedule memory 34 carries each of the service personnel S1, S2,..., Sn carrying each of the plurality of portable tools 2 constituting the maintenance system 10. The telephone number of the portable tool 2 and the daily travel schedule, that is, the change of the location in time series are stored. The modem 5c connects the center server 3 to the public telephone network 4 as described above.
[0027]
The CPU 31 searches the copier installation location memory 34 and the movement schedule memory 35 according to a program stored in the ROM 32 in advance, reads out necessary data, creates maintenance instruction data, and outputs it to the modem 5c. That is, the CPU 31 corresponds to the serviceman search unit and the transmission unit of the present invention. When the maintenance command data is input from the CPU 31, the modem 5c calls one of the portable tools 2 to the public telephone line network 4 and transmits the maintenance command data.
[0028]
FIGS. 6A to 6C are flowcharts showing processing procedures when a trouble occurs in the copier, the center server, and the portable tool constituting the maintenance system according to the second embodiment of the present invention. The CPU 11 of the copying machine 1 reads the detection signal of the sensor 19 at a predetermined self-diagnosis processing timing or when the copying operation is interrupted (s1), and determines whether or not a trouble has occurred (s2). When determining that a trouble has occurred, the CPU 11 creates trouble data including a copying machine ID for identifying itself (s3), and transmits the trouble data to the center server 3 via the modem 5a and the public telephone network 4. (S4) Waiting for the serviceman to execute the maintenance work (s5).
[0029]
When the CPU 31 of the center server 3 receives the trouble data transmitted from the CPU 11 of the copying machine 1 via the modem 5c (s11), the CPU 31 stores the trouble data from the copying machine installation location memory 34 based on the copying machine ID included in the trouble data. Then, the installation location of the copying machine 1 which is the transmission source is read out (s12). Next, the CPU 31 searches the movement schedule memory 35 for a service person who is closest to the read installation location in the movement schedule memory 35 with reference to the current time (s13), and performs a maintenance instruction including the address of the installation location of the copier where the trouble has occurred. Data is created (s14). The CPU 31 transmits the created maintenance command data to the portable tool 2 carried by the service person involved in the search via the modem 5c and the public telephone network 4 (s15).
[0030]
When receiving the maintenance command data transmitted from the CPU 31 of the center server 3 (s21), the CPU 21 of the portable tool 2 displays the received maintenance command data on the display 24 (s22).
[0031]
According to the above-described processing, according to the maintenance system according to the embodiment of the present invention, when any one of the copiers 1 constituting the maintenance system 10 has a trouble, the copier in the center server 3 The search for the service technician closest to the installation location 1 and the transmission of the maintenance command data to the portable tool 2 carried by the searched service technician are automatically executed. Therefore, the time from the occurrence of a trouble to the start of the maintenance work can be reduced.
[0032]
FIG. 7 is a block diagram showing a configuration of a center server included in the maintenance system according to the embodiment of the present invention. The center server 40 according to this embodiment includes a serviceman position memory 45 instead of the movement schedule memory 35 shown in FIG. The serviceman location memory 45 stores PHS current location data periodically supplied from the PHS communication company via the modem 5c. The PHS communication company always knows the current position of each PHS at the communication range level of each antenna based on the installation position of the antenna that has received the position signal periodically transmitted from the non-communicating PHS. By contract with a telecommunications company, information on the current location of a specific PHS can be supplied.
[0033]
Therefore, the center server 40 receives a periodic supply of the current position information on the PHS carried by each serviceman in accordance with the contract with the PHS communication company, and updates the supplied current position information to the serviceman position memory 45 in an updated manner. At the time of occurrence of a trouble in the copying machine 1, it is possible to more accurately search for the service person who is closest to the copying machine 1 in which the trouble has occurred, based on the contents stored in the service person position memory 45. .
[0034]
That is, the serviceman's predetermined moving schedule is highly likely to fluctuate according to the work content of each serviceman's turnover, and the position defined in the moving schedule does not match the serviceman's current position. In some cases, the service technician searched based on the travel schedule may not be the service technician located closest to the copier in which the trouble occurred. On the other hand, in the maintenance system according to the present embodiment, since the service person is searched by the current position information supplied from the PHS communication company, based on the position signal periodically transmitted from the PHS carried by each service person. Thus, the position of each serviceman is accurately specified, and the search for the serviceman located closest to the copying machine 1 in which the trouble has occurred can be performed very accurately.
[0035]
In addition, the process of transmitting the current position data from the portable tool 2 carried by each serviceman to the center server 40 is periodically executed, and the center server 40 performs the service based on the current position data transmitted from the portable tool 2. The contents of the man position memory 45 may be updated.
[0036]
FIG.BookIt is a figure showing composition of a center server contained in a maintenance system concerning an embodiment of the invention. The center server 50 according to the present embodiment is obtained by connecting a possessed component memory 51 to the CPU 31 in addition to the configuration shown in FIG. The possessed parts memory 51 stores the parts of the copying machine 1 carried by the service person in an updated manner for each service person.
[0037]
FIGS. 9 (A) and 9 (B)BookFIG. 4 is a diagram showing a processing procedure when a trouble occurs in a copier and a center server constituting the maintenance system according to the embodiment of the present invention. The CPU 11 of the copying machine 1 included in the maintenance system according to the present embodiment executes the trouble content diagnosis processing between the processing of s2 and the processing of s3 shown in FIG. 6A (s31). This trouble content diagnosis process is a process of specifying the content of the trouble that has occurred based on the detection signal of the sensor. The CPU 11 creates trouble data including a diagnosis result of the trouble content together with the copier ID specifying itself, and transmits the trouble data to the center server 3 (s3, s4).
[0038]
The CPU 31 of the center server 3 included in the maintenance system according to this embodiment performs maintenance work between the processing of s12 and the processing of s13 shown in FIG. 6B based on the trouble content of the received trouble data. A process for determining a necessary part is performed (s32). The CPU 31 searches for the nearest service technician in the movement schedule memory 35 based on the installation location of the copier 1 in which the trouble has occurred (s13), and determines whether the searched service technician has necessary parts. It is determined by referring to the stored contents of the possessed parts memory 51 (s33). If the retrieved serviceman does not possess the necessary parts, the copier in which the trouble has occurred is referred to the moving schedule memory 35. Is searched for a serviceman located next to the service person (s34).
[0039]
The CPU 31 repeats the processes of s33 and s34 to search for a service technician who is located closest to the copying machine 1 in which the trouble has occurred among the service technicians having the necessary parts, and carries the service technician. The maintenance command data is transmitted to the tool 2 (s14, s15).
[0040]
According to the above processing, in the maintenance system according to this embodiment, when a part needs to be replaced in the maintenance work of the copying machine 1 in which the trouble has occurred, a serviceman is required after going to the copying machine 1 in which the trouble occurred. The maintenance person can surely execute the maintenance work by the serviceman who has arrived at the copier 1 without noticing that the user does not have the necessary parts.
[0041]
FIG.49 is a flowchart showing a processing procedure of a center server included in the maintenance system according to the embodiment of the invention described in FIG. When the trouble data transmitted from the CPU 11 of the copying machine 1 includes the contents of the trouble, the CPU 31 of the center server 3 receiving the trouble data first reads the contents of the trouble from the trouble data, and Is determined to be a relatively minor trouble that can be dealt with by the operator on the user side, or a relatively serious trouble that requires maintenance work by a serviceman (s41). That is, the CPU 31 of the center server 3 according to this embodiment corresponds to the trouble determination unit of the present invention.
[0042]
The CPU 31 executes the processes in s12 to s15 only when it is determined that the trouble is a relatively serious trouble requiring maintenance work by a serviceman, and determines that the trouble is a relatively minor trouble such as a paper jam or running out of toner. In this case, the copier 1 is instructed such as an operation for clearing the trouble (s42).
[0043]
According to the above-described processing, in the maintenance system according to this embodiment, the service technician is sent to the copier 1 only when maintenance work by the service technician is necessary, according to the content of the trouble that has occurred in the copier 1, and In the case of a minor trouble, make the maintenance work performed by the operator on the user side, reduce the frequency of the service person at the place where another copier is installed, and go to the copier where the trouble has newly occurred. It is possible to increase the number of service personnel who can perform the operation, and shorten the time from the occurrence of a trouble to the time when the service person goes.
[0044]
In the center server 3, the business hours or the desired visit time of the installation location of each copying machine 1 are stored together with the installation location address in the copying machine installation location memory 34 or in a single memory. From the trouble content and the current time, it may be determined whether the processing should be performed on the current day or the next day.
[0045]
In the above embodiment, the copier has been described as an example of the maintenance target device. However, the present invention can be similarly applied to other maintenance target devices connected to a center device via a network and used by a user. can do.
[0046]
【The invention's effect】
According to the invention described in claim 1,CopierWhen trouble occurs,CopierBy automatically performing the process of searching for the serviceman who is closest to the serviceman and the process of transmitting the maintenance command from the transmission unit to the portable terminal carried by the searched serviceman, from the time of occurrence of troubleCopierA maintenance order can be automatically issued to a service person who takes the shortest time to go to the service person, and the time required for searching for a service person can be reduced.
Also, based on the location of the copier where the trouble occurred, the nature of the trouble, the current location of the service man, and the parts owned by the service man, the service man carrying the mobile terminal to which the maintenance command should be sent is automatically determined. By performing a search, when a trouble occurs in a copier, it is possible to send the nearest service technician to the copier among the service technicians who carry parts corresponding to the type of trouble that has occurred. Thus, maintenance work can be more reliably performed on the copying machine.
[0047]
According to the second aspect of the present invention, based on the installation location of the maintenance target device in which the trouble has occurred and the predetermined moving schedule of the serviceman, the maintenance target device is located closest to the maintenance target device in which the trouble has occurred. By automatically searching for a service technician, when a trouble occurs in a maintenance target device, it is possible to easily and quickly search for a service technician located closest to the maintenance target device on a transfer schedule.
[0048]
According to the third aspect of the present invention, the serviceman located at the position closest to the maintenance target device in which the trouble occurred based on the installation location of the maintenance target device in which the trouble occurred and the signal transmitted from the mobile terminal. Is automatically searched, a serviceman located closest to the maintenance target device can be more accurately searched when a trouble occurs in the maintenance target device.
[0050]
Claim4According to the invention described in (1), the search for the service technician and the transmission of the maintenance command are selectively performed based on the result of the determination on the necessity of the maintenance technician by the service technician in the trouble determination unit, so that the Trouble occurredCopierWithout a service person going toCopierWhen trouble occurs in theCopierOccurred at a new location, causing new troubleCopierIt is possible to increase the number of service technicians who can go to the office, and to shorten the time from the occurrence of a trouble to the service technician.
[Brief description of the drawings]
FIG. 1 is a diagram showing a basic configuration of a maintenance system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a copying machine included in the maintenance system.
FIG. 3 is a block diagram showing a configuration of a portable tool included in the maintenance system.
FIG. 4 is a block diagram showing a configuration of a center server included in the maintenance system.
FIG. 5 is a diagram showing storage contents of a copier installation location memory and a movement schedule memory provided in the center server.
FIG. 6 is a flowchart showing a processing procedure of a copier, a center server, and a portable tool included in the maintenance system according to the embodiment of the present invention.
FIG. 7 is a block diagram showing a configuration of a center server included in a maintenance system according to an embodiment of the present invention.
FIG. 8 is a block diagram showing a configuration of a center server included in a maintenance system according to an embodiment of the present invention.
FIG. 9 is a flowchart showing a processing procedure of a copier and a center server included in the maintenance system according to the embodiment of the present invention.
FIG. 10 is a flowchart showing a processing procedure of a center server included in the maintenance system according to the embodiment of the present invention.
[Explanation of symbols]
1-Copier (maintenance target device)
2-Portable tool (portable terminal)
3-Center server (center device)
4-Public telephone network (network)
10-Maintenance system
11-CPU (of copying machine) (trouble detecting unit, trouble diagnosing unit)
21-CPU (of portable tool)
31-CPU (of center server) (serviceman search unit, trouble determination unit)
34—Copier Installation Location Memory
35-Move schedule memory
45-Serviceman location memory
51-Owned parts memory

Claims (4)

A maintenance system in which a copier requiring maintenance work by a serviceman when a trouble occurs and a portable terminal carried by the serviceman are connected to a center device via a network,
A trouble detection unit for detecting occurrence of trouble in the copying machine ;
An installation location storage unit that stores the installation location of the copying machine ;
A serviceman management unit that manages the current location of the serviceman,
A serviceman search unit that searches for the serviceman closest to the copying machine in which the trouble detection unit has detected the occurrence of the trouble based on the storage contents of the installation location storage unit and the management contents of the serviceman management unit;
A transmission unit for transmitting a copier maintenance instruction to the serviceman's mobile terminal searched by the serviceman search unit;
A possessed parts management unit that manages the possession status of parts by service personnel;
Including a trouble diagnosis unit that diagnoses the content of the trouble detected by the trouble detection unit,
The serviceman search unit is configured to perform a trouble in the copier based on the diagnosis result of the trouble diagnosis unit, the storage contents of the installation location storage unit, the management contents of the serviceman management unit, and the management contents of the possessed parts management unit. A maintenance system which searches for a service person who is closest to the copying machine in which a trouble has occurred among service persons who have parts corresponding to the contents of the above . The maintenance system according to claim 1, wherein the serviceman management unit manages a current position of the serviceman based on a predetermined moving schedule. The maintenance system according to claim 1, wherein the serviceman management unit manages a current position of the serviceman based on a signal transmitted from the mobile terminal to the network. The trouble detection unit includes a trouble determination unit that determines the necessity of maintenance work by a serviceman based on the diagnosis result of the trouble diagnosis unit, and the serviceman search unit and the The maintenance system according to any one of claims 1 to 3, further comprising: a transmission selection unit that selectively enables the transmission unit.

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