Rebuild management system

Abstract

Provided is a rebuild management system 1 capable of planning the replacement of components in consideration of variation in residual values of a plurality of components constituting an apparatus. The rebuild management system 1 comprises: a residual value calculation unit 11 that calculates a residual value for each component constituting an apparatus; a surplus value calculation unit 12 that calculates a surplus value of the apparatus on the basis of the difference between the maximum value and the minimum value of the residual value; and a rebuild planning unit 13 that plans the replacement of the components constituting the apparatus so that the surplus value is less than or equal to a prescribed threshold value, or a total sum of surplus values of a plurality of apparatuses is minimized.

Description

Rebuild Management System

[0001] The present invention relates to a rebuild management system.

[0002] For example, Patent Document 1 discloses a technology for refurbishing and utilizing used equipment.

[0003] The abstract of Patent Document 1 states that "the image forming device comprises a management unit that manages the usage status of each part of the image forming device as a counter; a replacement determination unit that determines whether or not a part among multiple parts needs to be replaced based on whether or not the part's counter exceeds a predetermined threshold; a checklist generation unit that identifies and displays parts that have been determined to need replacement by the replacement determination unit and generates a checklist that includes a list of the multiple parts; and a checklist output unit that outputs the checklist generated by the checklist generation unit to be used when reproducing the image forming device."

[0004] JP 2015-41060 A

[0005] However, in Patent Document 1, whether a part needs to be replaced is determined based on whether the part's counter exceeds a predetermined threshold, so parts that do not exceed the predetermined threshold are not replaced, and parts that are in a somewhat deteriorated state are used as is.

[0006] Here, the value of a used device is determined by the most deteriorated part among the multiple parts that make up the device.

[0007] Therefore, even if the residual values ​​of the multiple parts that make up the equipment vary and some of the parts have high residual values, the residual value of the equipment is determined by the most deteriorated part, i.e., the part with the lowest residual value, which poses a problem in that the selling price of the equipment will be set low.

[0008] The problem to be solved by the present invention is to provide a rebuild management system that is capable of planning the replacement of parts taking into consideration the variations in the residual values ​​of the parts that make up a device.

[0009] In order to solve the above-mentioned problems, the rebuild management system of the present invention is characterized by having a residual value calculation unit that calculates the residual value for each part that makes up a piece of equipment, a surplus value calculation unit that calculates the surplus value of the equipment based on the difference between the maximum and minimum residual values, and a rebuild planning unit that plans the replacement of the parts that make up the equipment so that the surplus value is below a predetermined threshold or so that the sum of the surplus values ​​of multiple pieces of equipment is minimized.

[0010] According to the present invention, it is possible to realize a rebuild management system that is capable of planning the replacement of parts taking into consideration the variations in the residual values ​​of the parts that make up a device.

[0011] Problems, configurations, and effects other than those described above will become apparent from the following description of the preferred embodiments of the invention.

[0012] 1 is a functional block diagram of a rebuild management system according to an embodiment. 2 is a diagram illustrating an example of a device DB according to an embodiment. 3 is a diagram illustrating an example of a parts DB according to an embodiment. 4 is a diagram illustrating an example of a coefficient DB according to an embodiment. 5 is a diagram illustrating an example of a parts replacement DB according to an embodiment. 6 is a diagram illustrating an example of the operation of a rebuild management system according to an embodiment. 7 is a diagram illustrating an example of a display screen of a rebuild management system according to an embodiment.

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing and embodiment, the same or similar components are designated by the same reference numerals, and redundant explanations will be omitted.

[0014] The examples are illustrative of the present invention, and have been omitted or simplified as appropriate for clarity of explanation. The present invention can be implemented in various other forms. Unless otherwise specified, each component may be singular or plural.

[0015] In order to facilitate understanding of the invention, the position, size, shape, range, etc. of each component shown in the drawings may not represent the actual position, size, shape, range, etc. Therefore, the present invention is not necessarily limited to the position, size, shape, range, etc. disclosed in the drawings.

[0016] Although various types of information may be described using expressions such as "table," "list," and "queue" as examples, the various types of information may also be expressed using data structures other than these. For example, various types of information such as "XX table," "XX list," and "XX queue" may also be expressed as "XX information." When describing identification information, expressions such as "identification information," "identifier," "name," "ID," and "number" are used, but these are interchangeable.

[0017] When there are multiple components with the same or similar functions, they may be described using the same reference numeral with different subscripts. When there is no need to distinguish between these multiple components, the subscripts may be omitted.

[0018] In the embodiments, processing performed by executing a program may be described. Here, a computer executes the program using a processor (e.g., a CPU or a GPU) and performs processing defined by the program using storage resources (e.g., memory) and interface devices (e.g., communication ports). Therefore, the entity performing the processing by executing the program may be the processor. Similarly, the entity performing the processing by executing the program may be a controller, device, system, computer, or node having a processor. The entity performing the processing by executing the program may be any computing unit, and may include a dedicated circuit that performs specific processing. Here, the dedicated circuit may be, for example, an FPGA (Field Programmable Gate Array), an ASIC (Application Specific Integrated Circuit), or a CPLD (Complex Programmable Logic Device).

[0019] A program may be installed on a computer from a program source. The program source may be, for example, a program distribution server or a computer-readable storage medium. When the program source is a program distribution server, the program distribution server may include a processor and storage resources for storing the program to be distributed, and the processor of the program distribution server may distribute the program to be distributed to other computers. In addition, in the embodiments, two or more programs may be realized as one program, or one program may be realized as two or more programs.

[0020] FIG. 1 is a functional block diagram of a rebuild management system according to an embodiment of the present invention.

[0021] The rebuilding management system 1 of this embodiment has, as functional blocks, a control unit 10, a storage unit 20, an input unit 30, and an output unit 40. The control unit 10 has, as functional blocks, a residual value calculation unit 11, a surplus value calculation unit 12, a rebuilding planning unit 13, and a rebuilding execution unit 14. The storage unit 20 stores a device DB 21, a parts DB 22, a coefficient DB 23, and a parts replacement DB 24. Note that DB is an abbreviation for database.

[0022] Each functional block of the control unit 10 can be realized by executing a program on a processing system including, for example, a processing device such as a CPU (Central Processing Unit), a memory, an auxiliary storage device, an input / output interface, etc. The storage unit 20 can be realized, for example, by the auxiliary storage device or memory of the processing system. The input unit 30 can be realized, for example, by an input interface such as a keyboard, a mouse, or a touch panel. The output unit 40 can be realized, for example, by an output interface such as a display device.

[0023] The residual value calculation unit 11 calculates the residual value of each part that constitutes the equipment.

[0024] The surplus value calculation unit 12 calculates the surplus value of the equipment based on the difference between the maximum and minimum residual values.

[0025] The rebuilding planning unit 13 plans the replacement of parts that make up the equipment so that the surplus value satisfies a predetermined condition. For example, the rebuilding planning unit 13 plans the replacement of parts that make up the equipment so that the surplus value is equal to or less than a predetermined threshold value, or so that the sum of the surplus values ​​of multiple equipment is minimized.

[0026] The rebuilding execution unit 14 executes the part replacement plan planned by the rebuilding planning unit 13.

[0027] FIG. 2 is a diagram illustrating an example of a device DB according to the embodiment.

[0028] The device DB 21 is a table that associates, for example, a device ID, a device name, a customer, and a component part. In this embodiment, a scanning electron microscope (SEM) is used as an example of the device, but the device is not limited to this and may be any other device that is composed of multiple parts.

[0029] 2, the device with device ID D1 (hereinafter sometimes referred to as device D1 or simply as D1) has the device name SEM, is for customer C1, and has component part IDs P11, P12, P13, etc. Devices with device IDs D2 and D3 are defined according to similar rules.

[0030] FIG. 3 is a diagram illustrating an example of a part DB according to the embodiment.

[0031] The part DB 22 is a table that associates, for example, part IDs, part names, and evaluation values. In the example of FIG. 3 , the part with part ID P11 (hereinafter, sometimes referred to as the part with part ID P11 or simply P11) has the part name of a vacuum chamber. Similarly, P12 indicates a motor, and P13 indicates a light-emitting element. An evaluation value is stored for each part. While FIG. 3 illustrates an example in which two evaluation values, R1 and R2, are used, this is not a limitation, and the evaluation value may be one, or three or more. Furthermore, the part DB 22 may also include parts not included in the component parts of the equipment DB 21, i.e., parts not installed in equipment, such as spare parts for replacement.

[0032] In this embodiment, the equipment is assumed to be second-hand, and therefore the components are deteriorated. Therefore, it is necessary to know the residual value of the components.

[0033] The evaluation value is a parameter used to calculate the residual value of a part, which will be described later. For example, as the evaluation value of a light-emitting element, R1 is the light emission amount and R2 is the response time. The evaluation value of a part may be determined by measurements using the part, or by reading and using information stored in the device, such as the usage time, or by calculating the evaluation value using a predetermined relational expression based on multiple pieces of information, or by referring to a lookup table.

[0034] FIG. 4 is a diagram illustrating an example of the coefficient DB according to the embodiment.

[0035] The coefficient DB 23 is a table that associates, for example, part names, weighting coefficients for evaluation values, and customers. In the example of FIG. 4, when the part name is a vacuum chamber, the weighting coefficient for R1 for customer C1 is 0.9, and the weighting coefficient for R2 is 0.1. Similarly, weighting coefficients are defined for motors and light-emitting elements. Note that for light-emitting elements, a higher light emission intensity for the R1 evaluation value is better, and a faster response time (smaller value) for the R2 evaluation value is better, so the weighting coefficient for R2 is set to a negative value of -0.1.

[0036] FIG. 5 is a diagram illustrating an example of a part replacement DB according to the embodiment.

[0037] The part replacement DB 24 is a database that records part replacement plans, and is a table that associates, for example, equipment IDs, work names, part IDs, and man-hours. In the example of Figure 5, it is specified that part P11 is to be removed from equipment D1, part P21 is to be removed from equipment D2, and part P21 is to be installed on equipment D1. It also shows that the man-hours required for each are 1 minute, 1 minute, and 2 minutes. Note that the man-hours column is not required and may be omitted.

[0038] FIG. 6 is a diagram illustrating an example of the operation of the rebuild management system according to the embodiment.

[0039] In Figure 6, the left side shows the residual values ​​of the D1 and D2 devices before rebuilding, and the right side shows the residual values ​​of the D1 and D2 devices after rebuilding. The vertical axis is the residual value, expressed as a score S. The horizontal axis is the part ID.

[0040] First, the operation of the residual value calculation unit 11 will be described.

[0041] The residual value calculation unit 11 refers to the equipment DB 21, the parts DB 22, and the coefficient DB 23 to calculate the residual value of each part that constitutes the equipment.

[0042] Taking an example of a device with a device ID of D1, the residual value calculation unit 11 refers to the device DB 21 and reads out that the customer of the device D1 is C1 and the components are P11, P12, P13, . . .

[0043] Next, the residual value calculation unit 11 refers to the parts DB 22 for the component part P11 and reads out that the part name is a vacuum chamber, and the evaluation values ​​R1 and R2 are 0.4 and 0.8, respectively.

[0044] Next, the residual value calculation unit 11 refers to the coefficient DB 23 and reads out that the weighting coefficient of R1 for the vacuum chamber for customer C1 is 0.9 and the weighting coefficient of R2 is 0.1.

[0045] Next, the residual value calculation unit 11 calculates the residual value of the part by the weighted sum of the multiple evaluation values. Specifically, the residual value of part P11 is calculated as score S = 0.9 x R1 + 0.1 x R2. Residual values ​​are calculated for the other components in a similar manner. Note that the values ​​in the parts DB 22 and coefficient DB 23 shown in FIGS. 3 and 4 are merely examples for explaining the structure of the databases. Similarly, the residual values ​​shown in FIG. 6 are also shown using an example that clearly illustrates the operation and effects of the rebuild management system 1 of the embodiment. Therefore, the residual values ​​shown in FIG. 6 are not identical to the values ​​calculated using the values ​​in the parts DB 22 and coefficient DB 23 shown in FIGS. 3 and 4, but please forgive this. In reality, the two operate in agreement.

[0046] In this embodiment, the weighted average is calculated so that the sum of the multiple weighting coefficients is 1, but this is not limited to this. Also, without using weighting coefficients, it is possible to simply use R1+R2, which is the sum of the evaluation values, as the residual value. This makes it easier to calculate the residual value. In this case, the coefficient DB 23 may be eliminated. Also, if there is only one type of evaluation value, a weighting coefficient is not necessary, so the coefficient DB 23 may be eliminated.

[0047] In this embodiment, the residual value of a part is calculated by the weighted sum of multiple evaluation values ​​using a different weighting coefficient for each customer. This is because different customers may require different specifications for their equipment. For example, one customer may prioritize resolution and be willing to accept a long imaging time, while another customer may prioritize throughput (short imaging time) and be willing to sacrifice resolution. However, this is not limited to this, and it is also possible not to use different weighting coefficients for each customer. In this case, the customer columns in the equipment DB 21 and coefficient DB 23 may be omitted.

[0048] The residual value calculation unit 11 may also calculate the residual value of the part for which the residual value is to be calculated, assuming that parts other than the part for which the residual value is to be calculated are new or have predetermined performance. For example, to calculate the residual value of a certain part, the evaluation value of another part or a numerical value corresponding to the performance of another part may be required. In such cases, the actual evaluation value may be used by referencing the parts DB 22, but the evaluation value may not include the numerical value required for calculation, making it impossible to obtain the evaluation value. Furthermore, when a part is replaced, it becomes necessary to recalculate the residual value. Therefore, as mentioned above, the residual value of the part for which the residual value is to be calculated can be calculated by assuming that parts other than the part for which the residual value is to be calculated are new or have predetermined performance and using predetermined numerical values. The relational equations and predetermined numerical values ​​used to calculate the residual value may be stored in the storage unit 20 or may be previously stored in the residual value calculation unit 11.

[0049] In addition, when calculating the evaluation value of a part, a similar idea can be used to calculate the evaluation value of the part for which the evaluation value is to be calculated, assuming that parts other than the part for which the evaluation value is to be calculated are new or have a predetermined performance.

[0050] Next, a description will be given of the operation of the surplus value calculation unit 12. The surplus value calculation unit 12 calculates the surplus value of the equipment based on the difference between the maximum and minimum residual values ​​calculated by the residual value calculation unit 11.

[0051] The value of used equipment is determined by the most deteriorated part among the multiple parts that make up the equipment, that is, by the minimum residual value of the multiple parts. Therefore, the residual value of the other parts can be considered as surplus residual value. Therefore, the surplus value of the equipment can be determined by calculating the difference between the maximum and minimum residual values.

[0052] As shown in Figure 6, for equipment D1, the residual value of part P11 is small, while the residual values ​​of parts P12 and P13 are large. Therefore, the grade of the equipment corresponding to the minimum residual value is C (low grade), while the surplus value ΔS1 is large.

[0053] For equipment D2, the residual value of part P21 is large, the residual value of part P22 is small, and the residual value of part P23 is medium. Therefore, the grade of the equipment corresponding to the minimum residual value is C (low grade), while the surplus value ΔS2 is large, although not as large as ΔS1.

[0054] Therefore, the rebuild planning unit 13 plans the replacement of parts that make up the equipment so that the surplus value satisfies a predetermined condition. This makes it possible to plan the replacement of parts taking into account the variations in the residual values ​​of the multiple parts that make up the equipment.

[0055] As an example of satisfying a predetermined condition, the rebuild planning unit 13 plans the replacement of components that make up the equipment so that the surplus value is equal to or less than a predetermined threshold. This makes it possible to reduce the surplus value below the predetermined threshold and perform efficient rebuilding with a small surplus value.

[0056] As another example of satisfying a predetermined condition, the rebuilding planning unit 13 plans the replacement of components that make up equipment so that the total sum of the surplus value of multiple pieces of equipment is minimized. For example, in the example of Figure 6, the plan is to minimize the sum of the surplus value after rebuilding, ΔS1' + ΔS2'. This minimizes surplus value and enables efficient rebuilding.

[0057] As yet another example of a case where a predetermined condition is satisfied, the rebuild planning unit 13 plans the replacement of parts between multiple devices. This enables efficient rebuilding between multiple devices, reduces the amount of surplus parts discarded, and improves profitability. It also makes rebuilding possible even when there are no spare parts available for replacement. When planning the replacement of parts between multiple devices, it is desirable for the rebuild planning unit 13 to plan the replacement of parts that make up the devices so that the total surplus value of the multiple devices is minimized.

[0058] For example, in the example of Figure 6, parts are exchanged between equipment D1 and equipment D2, with parts P11 being exchanged for parts P21. As a result, the surplus value ΔS1' of equipment D1 decreases, and the equipment's grade increases to A (high grade), allowing for an increase in the selling price and guaranteed performance of the equipment. The grade of equipment D2 remains C, but the surplus value ΔS2' has decreased. Therefore, the total surplus value ΔS1 + ΔS2 has decreased to ΔS1' + ΔS2', which can be said to have contributed to the upgrade of equipment D1.

[0059] The rebuild planning unit 13 is not limited to planning the replacement of parts between multiple devices, but may also plan replacement with parts that are not installed in the device, such as spare parts for replacement.

[0060] As another example of satisfying a predetermined condition, the rebuild planning unit 13 plans the replacement of a part under the constraint that the man-hours required for replacing the part must be equal to or less than a predetermined value. This enables efficient rebuilding that takes man-hours into consideration. Note that, for example, a man-hours DB (not shown) that associates part names, work names, and man-hours may be stored in the storage unit 20, and different man-hours may be assigned for each work such as attaching and removing parts, as explained in FIG. 5, or a uniform man-hour may be assigned.

[0061] The rebuild planning unit 13 may display on the screen at least one of the residual value, surplus value, the grade of the part corresponding to the residual value, and the grade of the equipment corresponding to the minimum residual value.

[0062] The rebuild planning unit 13 outputs a parts replacement plan. This output includes, for example, storing the parts replacement DB 24 described in FIG. 5 in the storage unit 20. This output may also include displaying the contents of the parts replacement DB 24 on a screen or printing it out. This allows the rebuild plan to be confirmed, and also enables workers to perform the part replacement work using this as a work instruction list.

[0063] Furthermore, instead of having a worker replace parts, the replacement may be performed by a robot. In this embodiment, the rebuild execution unit 14 executes the plan for part replacement planned by the rebuild planning unit 13 by outputting an instruction to the robot. Note that the rebuild execution unit 14 is not essential and may be omitted.

[0064] The rebuild planning unit 13 may plan part replacement automatically or manually. When planning part replacement automatically, an existing constrained optimization algorithm or the like can be used. When planning part replacement manually, the process will be described with reference to FIG. 7.

[0065] FIG. 7 is a diagram illustrating an example of a display screen of the rebuild management system according to the embodiment.

[0066] The rebuild planning unit 13 receives an instruction to replace a part and displays on the screen at least one of the residual value, surplus value, part grade corresponding to the residual value, and equipment grade corresponding to the minimum residual value after the part has been replaced. This allows the user to manually plan part replacement while viewing the results after the part has been replaced.

[0067] Furthermore, the rebuilding planning unit 13 displays on the screen at least one of the grade of the equipment corresponding to the minimum residual value after the parts have been replaced, the selling price of the equipment, and the guaranteed performance of the equipment, thereby making it possible to confirm the value of the equipment after rebuilding.

[0068] The rebuild planning unit 13 displays, for example, a display screen 100 as shown in Fig. 7, and receives instructions for replacing parts. The upper part of the display screen 100 displays information about the D1 device before and after rebuilding.

[0069] The difference from the diagram explained in Figure 6 is that after rebuilding, the selling price of the equipment is displayed as "Sales price: XX" and the guaranteed performance of the equipment is displayed as "Guaranteed performance: Resolution XX, ...".

[0070] Furthermore, in this embodiment, as an example of satisfying a predetermined condition, the rebuilding planning unit 13 displays "Target surplus value xx or less not achieved" before rebuilding and displays "Target surplus value xx or less achieved" after rebuilding in order to plan the replacement of parts that make up the equipment so that the surplus value is equal to or less than a predetermined threshold. This allows for manual planning of part replacement so that the surplus value is equal to or less than a predetermined threshold.

[0071] By inputting a device ID in the device ID input field 101, a target device can be selected.

[0072] The part ID list 102 displays the part ID, part name, pre-rebuilt grade (grade of the part before rebuilding), replacement part ID, and post-rebuilt grade (grade of the part after rebuilding) of the component parts of the selected D1 device.

[0073] When the row P11 in the part ID list 102 is selected, the color of the selected row changes, and a list of parts that can be replaced with the selected part is displayed in the replacement part ID list 103. The replacement part ID list 103 displays the replacement part ID and grade (part grade).

[0074] When the row for P21 in replacement part ID list 103 is selected, the color of the selected row changes, and when the Replace button 104 is pressed in this state, the selected P21 is entered in the replacement part ID field in part ID list 102, and the post-rebuild grade is changed to the grade of the replacement part ID. In addition, the information on the equipment before and after rebuilding at the top of display screen 100 is also updated.

[0075] When any line in the part ID list 102 is selected, pressing the Cancel Replacement button 105 cancels the information entered in the replacement part ID field and returns it to "-", indicating that the part will not be replaced. The information on the pre-rebuilt and post-rebuilt equipment at the top of the display screen 100 is also updated. For parts that will not be replaced, the post-rebuilt grade will be the same as the pre-rebuilt grade.

[0076] Finally, when the decision button 106 is pressed, the part replacement plan is decided and output. As an example of the output, for example, the part replacement DB 24 is stored in the storage unit 20.

[0077] Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations described in the embodiments, and various modifications are possible within the scope of the technical concept of the present invention. In addition, some or all of the configurations described in the embodiments may be combined and applied.

[0078] 1: Rebuilding management system 10: Control unit 11: Residual value calculation unit 12: Surplus value calculation unit 13: Rebuilding planning unit 14: Rebuilding execution unit 20: Memory unit 21: Equipment DB 22: Parts DB 23: Coefficient DB 24: Parts replacement DB 30: Input unit 40: Output unit 100: Display screen 101: Equipment ID input field 102: Parts ID list 103: Replacement part ID list 104: Replacement button 105: Replacement cancellation button 106: Confirmation button

Claims

1. A rebuild management system comprising: a residual value calculation unit that calculates the residual value for each part that constitutes equipment; a surplus value calculation unit that calculates the surplus value of the equipment based on the difference between the maximum and minimum residual values; and a rebuild planning unit that plans the replacement of the parts that constitute the equipment so that the surplus value is equal to or less than a predetermined threshold value or so that the sum of the surplus values ​​of multiple equipment is minimized.

2. A rebuild management system according to claim 1, wherein the rebuild planning unit plans the replacement of the parts that make up the equipment so that the surplus value is below a predetermined threshold.

3. A rebuild management system according to claim 1, wherein the rebuild planning unit plans the replacement of the parts that make up the equipment so that the total sum of the surplus value of a plurality of equipment is minimized.

4. A rebuild management system according to claim 3, wherein the rebuild planning section plans replacement of the parts among the plurality of devices.

5. A rebuild management system according to claim 3, wherein the rebuild planning unit plans the replacement of the part under the constraint that the man-hours required for replacing the part must be equal to or less than a predetermined value.

6. A rebuild management system as claimed in claim 1, characterized in that the residual value calculation unit calculates the residual value of the part for which the residual value is to be calculated, assuming that parts other than the part for which the residual value is to be calculated are new or have a predetermined specified performance.

7. A rebuild management system according to claim 1, wherein the residual value calculation unit calculates the residual value of the part by adding up a plurality of evaluation values.

8. A rebuild management system according to claim 1, wherein the residual value calculation unit calculates the residual value of the part by a weighted sum of a plurality of evaluation values.

9. A rebuild management system according to claim 1, wherein the residual value calculation unit calculates the residual value of the part by a weighted sum of a plurality of evaluation values ​​using a weighting coefficient that differs for each customer.

10. A rebuild management system according to claim 1, characterized in that the rebuild planning unit displays on a screen at least one of the residual value, the surplus value, the grade of the part corresponding to the residual value, and the grade of the equipment corresponding to the minimum value of the residual value.

11. A rebuild management system as set forth in claim 2, characterized in that the rebuild planning unit receives an instruction to replace the part and displays on a screen at least one of the residual value, the surplus value, the grade of the part corresponding to the residual value, and the grade of the equipment corresponding to the minimum value of the residual value after the part has been replaced.

12. A rebuild management system as claimed in claim 1, characterized in that the rebuild planning unit displays on a screen at least one of the grade of the equipment corresponding to the minimum value of the residual value after the part has been replaced, the selling price of the equipment, and the guaranteed performance of the equipment.

13. A rebuild management system according to claim 1, wherein the rebuild planning section outputs a plan for replacing the parts.

Images