Aging test machine, modification method and aging test method

Abstract

The invention discloses an aging test machine, a modification method and an aging test method, comprising a machine base, wherein the machine base is provided with a PCB connecting plate and an MCC driving plate, the PCB connecting plate is connected to the MCC driving plate, the PCB connecting plate is provided with a first slot, the top of the machine base is provided with side panels along two opposite edges of the machine base, the two side panels are provided with first slide rails with openings opposite to each other, the first slot faces the area between the two side panels, the setting height of the first slide rail is the same as the setting height of the first slot; a PCB reverse connection plate is provided on the machine base, the PCB reverse connection plate is provided with a second slot and a reverse connection plate gold finger, the reverse connection plate gold finger is connected to the first slot, the first slot is parallel to the second slot, and the arrangement order of ports in the first slot and the second slot is opposite.

Description

Technical Field

[0001] The present invention relates to the field of electronic component testing, and more specifically, to an aging test machine, a modification method and a testing method. Background Art

[0002] Before the circuit board leaves the factory, it is generally subjected to an aging test. This process includes aging of the circuit board and testing of the aged circuit board. The circuit board after aging treatment is called an aging board, and the aging board test is performed on an aging test machine.

[0003] The aging test machine model MCC LC2 produced by MCC (Micro Control Compary) includes a machine base and a PCB connecting board. When testing the aging board, first insert the gold fingers on the aging board into the slots of the PCB connecting board in the specified direction to put the aging board in a working state. At this time, the side of the aging board away from the aging board test machine that can be tested is the front side, and the side facing the aging board test machine that is waiting to be tested is the back side. The existing aging test machines have requirements on the connection direction of the aging board and the PCB connecting board, resulting in the existing aging test machines can only measure the signal on the front side of the aging board. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide an aging test machine, two aging test machine modification methods, and an aging test method for performing an aging test on a aging board using an aging test machine.

[0005] The first aspect of the present invention provides an aging test machine, including a machine base, the machine base is provided with a PCB connecting plate and an MCC driving plate, the PCB connecting plate is connected to the MCC driving plate, the PCB connecting plate is provided with a first slot, the top of the machine base is provided with side panels along two opposite edges of the machine base, the two side panels are provided with first slide rails with openings facing each other, the first slot faces the area between the two side panels, and the setting height of the first slide rail is the same as the setting height of the first slot;

[0006] A PCB reverse board is arranged on the base, and the PCB reverse board is provided with a second slot and a reverse board gold finger, the reverse board gold finger is connected to the first slot, the first slot and the second slot are parallel, and the arrangement order of the ports in the first slot and the second slot is opposite.

[0007] A second aspect of the present invention provides a modification method for an aging test machine. Before the modification, the aging test machine includes a machine base, the machine base is provided with a PCB connecting board and an MCC driving board, the PCB connecting board is connected to the MCC driving board, and the PCB connecting board is provided with a first slot. The modification method includes:

[0008] Side panels are respectively arranged at the top of the base along two opposite edges of the base, the two side panels are provided with first slide rails with openings facing each other, the first slot faces the area between the two side panels, and the setting height of the first slide rail is the same as the setting height of the first slot;

[0009] A PCB reverse board is arranged on the base, and the PCB reverse board is provided with a second slot and a reverse board gold finger, the reverse board gold finger is connected to the first slot, the first slot is parallel to the second slot, and the arrangement order of ports in the first slot and the second slot is opposite.

[0010] The third aspect of the present invention provides a modification method for an aging test machine. Before the modification, the aging test machine includes a machine base, the machine base is provided with a PCB connecting plate and an MCC driving plate, the PCB connecting plate is connected to the MCC driving plate, the PCB connecting plate is provided with a first slot, side panels are respectively provided at the top of the machine base along two opposite edges of the machine base, the two side panels are provided with first slide rails with openings facing each other, the first slot faces the area between the two side panels, the setting height of the first slide rail is the same as the setting height of the first slot, and the modification method includes:

[0011] A PCB reverse board is arranged on the base, and the PCB reverse board is provided with a second slot and a reverse board gold finger, the reverse board gold finger is connected to the first slot, the first slot is parallel to the second slot, and the arrangement order of ports in the first slot and the second slot is opposite.

[0012] In the aging test machine and the modification method, the first slot and the second slot are parallel, and the arrangement order of the ports in the first slot and the second slot is opposite. When the gold finger of the aging board is connected to the second slot, the aging board is connected to the PCB connecting board through the PCB reverse board. At this time, the state of the aging board is compared with the state when the aging board is directly connected to the PCB connecting board. The aging board is flipped 180°, that is, the back of the aging board is in a state away from the aging test machine. At this time, the aging test machine can test the back of the aging board.

[0013] In the above content of the present invention, preferably, the PCB connecting board is perpendicular to the PCB reverse board, and the setting height of the second slot is higher than that of the first slot; the retreat distance between the aging board and the PCB connecting board in the horizontal direction is limited, and it is not easy to set the PCB reverse board between the aging board and the PCB connecting board. The PCB reverse board is designed to be perpendicular to the PCB connecting board when connected, and the PCB reverse board is set by utilizing the height difference between the aging board and the PCB connecting board.

[0014] Preferably, a support frame that slides with the aging board is provided on the machine base, and the support frame includes a base plate and a sliding plate. There are two sliding plates, which are relatively fixed on the same side of the base plate. Second slide rails that slide with the aging board are opened on the two sliding plates, and the setting height of the second slide rail is the same as the setting height of the second slot; when one end of the aging board is connected to the PCB reverse board, the other end is in a suspended state, which can easily cause damage to the aging board. Through the setting of the support frame, when one end of the aging board is connected to the PCB reverse board, the other end is located in the second slide rail, and the overall force of the aging board is more uniform. At the same time, the setting of the second slide rail is also conducive to the connection and separation between the aging board and the PCB reverse board.

[0015] Preferably, a slide bar is provided on the base plate, and the slide bar is slidably matched with the first slide rail; when the support frame and the machine base are fixed by means such as bolts, it is inconvenient to disassemble. In the modification method, the slide bar is provided to make the support frame and the machine base slidably matched, making disassembly more convenient.

[0016] Preferably, the support frame also includes a support plate, there are two support plates, the support plates are perpendicular to the base plate, the two support plates are arranged opposite to each other, the support plates are parallel to the sliding bar, the spacing between the two support plates away from each other is equal to the spacing between the two sides of the base plate where the sliding bar is arranged, and the sliding plate is arranged on the opposite side of the support plate.

[0017] Preferably, the support frame also includes a mounting plate, the setting height of the top surface of the base plate is not lower than the setting height of the top surface of the side plate, the mounting plate is fixedly arranged between the base plate and the sliding plate, there are two mounting plates, which are relatively arranged at the two ends of the top surface of the base plate, the mounting plate and the base plate are fixedly connected by bolts, the mounting plate is parallel to the sliding bar, and the distance between the two opposite sides of the two mounting plates is greater than the distance between the two opposite sides of the two sliding bars; the aging plate is likely to separate and fall off from the first slide rail when the sliding plate slides and cooperates. In the transformation method, the distance between the two opposite sides of the two mounting plates is greater than the distance between the two opposite sides of the two sliding bars. When the sliding bar on the base plate slides on the first slide rail and accidentally falls off, the mounting plate can play a role in preventing it from falling.

[0018] Preferably, the sliding plate includes a sliding part and a push-pull part, the sliding part and the push-pull part are fixedly connected, the sliding part is fixedly connected to the support plate, the second slide rail is arranged on the sliding part, the push-pull part is located on the side of the sliding part facing away from the second slide rail, and one end of the sliding part is connected to the PCB reverse plate; when the support frame needs to be moved, the support frame can be driven to move by moving the push-pull part, so that the movement of the support frame is more convenient.

[0019] Preferably, the sliding portion is located on a side of the PCB reverse connection plate away from the PCB connection plate.

[0020] Preferably, the push-pull portion is located at an end of the sliding portion away from the PCB reverse connection plate.

[0021] Preferably, the substrate is provided with a through hole, which may be one or more through holes.

[0022] Preferably, the support plate is provided with a through hole, which may be one or more through holes.

[0023] Preferably, the connection methods between the base plate and the mounting plate, the mounting plate and the support plate, the support plate and the sliding plate, and the sliding part and the push-pull part include but are not limited to bolt fixing, welding fixing, and integral molding.

[0024] Preferably, the distance between the first slide rail and the second slide rail is 10-200 mm, preferably 50-150 mm, such as 80 mm, 110 mm, etc.

[0025] A fourth aspect of the present invention provides an aging test method for performing an aging test on an aging board using an aging test machine, comprising the following steps:

[0026] S01: Place the front side of the aging board toward a side away from the base;

[0027] S02: The gold finger of the aging board faces the first slot, the aging board is inserted into the first slide rail, and slides along the first slide rail toward the first slot until the gold finger of the aging board is inserted into the first slot and connected with the PCB connecting board;

[0028] S03: Test the front side of the aged board;

[0029] S04: After the test is completed, the aging board is moved in the reverse direction and separated from the PCB connecting board;

[0030] S05: The back side of the aging board is directed toward a side away from the base;

[0031] S06: Connect the gold finger of the reverse connection board to the first slot;

[0032] S07: Connecting the gold finger of the aging board to the second slot;

[0033] S08: Test the back of the aged board;

[0034] S09: After the test is completed, the gold finger of the aging board is separated from the second slot;

[0035] S10: Separate the PCB reverse connection board from the PCB connection board.

[0036] Preferably, the machine base is provided with a support frame that is slidably matched with the aging board, and the support frame includes a base plate and a sliding plate. There are two sliding plates, which are relatively fixedly arranged on the same side of the base plate. The two sliding plates are provided with second slide rails that are slidably matched with the aging board, and the setting height of the second slide rail is the same as the setting height of the second slot; the base plate is provided with a slide bar, and the slide bar is slidably matched with the first slide rail;

[0037] The test method also includes:

[0038] Step S11: inserting the slide bar on the substrate into the first slide rail, and sliding the slide bar along the first slide rail toward the PCB connecting board;

[0039] Step S12: direct the gold finger of the aging board toward the second slot, insert the aging board into the second slide rail, and slide along the second slide rail toward the second slot.

[0040] The step S11 and step S12 are located between step S06 and step S07 in sequence.

[0041] Preferably, the machine base is provided with a support frame that slides with the aging board, the support frame includes a base plate and a sliding plate, there are two sliding plates, and the sliding plates are relatively fixedly arranged on the same side of the base plate, and the two sliding plates are provided with second slide rails that slide with the aging board, and the setting height of the second slide rail is the same as the setting height of the second slot, and the base plate is provided with a slide bar, and the slide bar slides with the first slide rail, and the two ends of the PCB reverse plate are fixedly connected to one end of the slide plate close to the PCB connecting plate, and the testing method also includes:

[0042] Step S13: inserting the slide bar on the substrate into the first slide rail, and sliding the slide bar along the first slide rail toward the PCB connecting plate;

[0043] Step S14: direct the gold finger of the aging board toward the second slot, insert the aging board into the second slide rail, and slide along the second slide rail toward the second slot.

[0044] The step S13 is located between step S05 and step S06, and the step S14 is located between step S06 and step S07.

[0045] In summary, the present invention crosses the connection signals between the PCB connecting board and the aging board through the PCB reverse board, and enables the aging board to work when the back side faces upward under the support of the support frame, so that the aging test machine can test the back side of the aging board. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a structural schematic diagram of an aging test machine before transformation in an embodiment of the present invention;

[0047] Figure 2 is a schematic diagram of the structure of the aging test machine after modification in an embodiment of the present invention;

[0048] Figure 3 is a schematic cross-sectional view of a substrate in an embodiment of the present invention;

[0049] Figure 4 Schematic diagram of the structure of the PCB reverse connection board in an embodiment of the present invention;

[0050] Figure 5 It is a wiring diagram of a port on the gold finger of the reverse connection board and a corresponding port on the second slot in an embodiment of the present invention.

[0051] Figure 6 It is a schematic diagram of the process of the aging board testing method in an embodiment of the present invention.

[0052] Figure numerals: 1. base; 2. side panel; 3. PCB connecting plate; 4. MCC driving board; 5. first slot; 6. first slide rail; 7. PCB reverse board; 8. second slot; 9. reverse board gold finger; 10. support frame; 11. base plate; 12. mounting plate; 13. support plate; 14. sliding plate; 15. sliding part; 16. push-pull part; 17. second slide rail; 18. slide bar; 19. first through hole; 20. second through hole. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0054] refer to Figure 1 , Figure 1 The structure of the aging test machine before the transformation in this embodiment is shown. Before the transformation, the aging test machine includes a base 1, a PCB connecting plate 3 and an MCC driving plate 4, wherein side panels 2 are respectively arranged along two opposite edges of the top of the base 1, the two side panels 2 are parallel, and first slide rails 6 with openings opposite to each other are arranged on the opposite surfaces, and the first slide rails 6 are parallel to the side panels 2; the PCB connecting plate 3 is arranged on the base 1, the PCB connecting plate 3 is located at one end of the side panel 2 along the length direction, and a first slot 5 for installing the aging board is arranged on the PCB connecting plate 3, the first slot 5 faces the area between the two side panels 2, and the first slot 5 and the first slide rail 6 are arranged at the same height; the MCC driving plate 4 is arranged on the base 1, the MCC driving plate 4 is connected to the PCB connecting plate 3 and is located on the side of the PCB connecting plate 3 away from the side panel 2.

[0055] refer to Figures 2 to 5 The aging test machine modified by the present invention mainly includes adding the following two parts:

[0056] (1) A PCB reverse connection board 7 for providing a reverse interface for the aging board;

[0057] (2) A support frame 10 for mounting the aging board and the PCB reverse board 7.

[0058] Considering that when the aging board is tested in the MCC LC model aging test machine, the horizontal retreat distance between the aging board and the PCB connecting board 3 is limited, it is not easy to set the PCB reverse board 7 between the aging board and the PCB connecting board 3. Therefore, in this embodiment, the PCB reverse board 7 is designed to be perpendicular to the PCB connecting board 3 when connected, the aging board is lifted by the support frame 10, and the PCB reverse board 7 is set by utilizing the height difference between the aging board PCB connecting boards 3.

[0059] Based on this idea, the support frame 10 includes a base plate 11, a mounting plate 12, a support plate 13 and a sliding plate 14. The overall external shape of the base plate 11 is a rectangular parallelepiped. Slide bars 18 are respectively arranged on both sides of the base plate 11. The slide bars 18 are parallel to the sliding plates 14 and slide with the first slide rail 6. The base plate 11 uses the two slide bars 18 to slide along the direction of the first slide rail 6 to move the support frame 10. When the base plate 11 is installed on the first slide rail 6, the setting height of the top surface of the base plate 11 is higher than the setting height of the top surface of the side plate 2 of the machine base 1. A first through hole 19 is arranged on the base plate 11. The setting of the first through hole 19 saves panel materials and makes the support frame 10 lighter and facilitates the movement of the support frame 10.

[0060] The overall shape of the mounting plate 12 is a rectangular parallelepiped. There are two mounting plates 12, which are relatively arranged on both sides of the top surface of the base plate 11. The mounting plates 12 are fixedly connected to the base plate 11 by bolts. The mounting plates 12 are parallel to the slide bar 18. The distance between the two opposite side surfaces of the two mounting plates 12 is greater than the distance between the two side surfaces of the two side plates 2. When the slide bar 18 slides on the first slide rail 6 and accidentally falls off, the mounting plates 12 can play a role in preventing it from falling.

[0061] The overall external shape of the support plate 13 is a rectangular parallelepiped. There are two support plates 13. The support plates 13 are welded and fixed to the side surface of the mounting plate 12 away from the substrate 11. The support plate 13 is parallel to the mounting plate 12. The two support plates 13 are arranged opposite to each other. The support plates 13 are parallel to the sliding bar 18. The spacing between the opposite sides of the two support plates 13 is equal to the spacing between the opposite sides of the two side plates 2; second through holes 20 are arranged on the side of the support plate 13, and there are multiple second through holes 20. The second through holes 20 on the two support plates 13 are arranged opposite to each other. The setting of the second through holes 20 saves panel materials and makes the support frame 10 lighter and facilitates the movement of the support frame 10. The support plate 13 plays a role in lifting the aging board in the support frame 10.

[0062] There are two sliding plates 14, which are relatively arranged on the sides of the two supporting plates 13 that are away from each other. The sliding plates 14 include an integrally formed sliding portion 15 and a push-pull portion 16. The overall shape of the sliding portion 15 is a rectangular parallelepiped, and the sliding portion 15 is fixed to the supporting plate 13 by bolts. The sliding portion 15 is parallel to the slide bar 18, and the setting height of the top surface of the sliding portion 15 is higher than the setting height of the top surface of the supporting plate 13. Second slide rails 17 with openings facing each other and slidingly cooperating with the aging plate are arranged on the opposite sides of the two sliding plates 14. The two second slide rails 17 are parallel to the slide bar 18, and the setting height of the second slide rails 17 is higher than the setting height of the top plate of the supporting plate 13. The distance between the two second slide rails 17 is equal to the spacing between the two opposite sides of the two side plates 2; the two push-pull portions 16 are arranged on the side of the two sliding portions 15 that is away from the second slide rail 17, and the push-pull portion 16 is located at the end of the sliding portion 15. The staff uses the push-pull portion 16 to move the support frame 10 on the machine base 1.

[0063] The PCB reverse board 7 is a rectangular plate structure. The PCB reverse board 7 is provided with a second slot 8 for connecting to the aging board and a reverse board gold finger 9 for connecting to the PCB. The ports on the reverse board gold finger 9 are matched one by one with the ports on the second slot 8 through signal lines. The arrangement order of the ports on the reverse board gold finger 9 is opposite to the arrangement order of the matching ports on the second slot 8. The second slot 8 and the reverse board gold finger 9 are parallel to the length direction of the PCB reverse board 7. When the PCB connecting board 3 is connected to the PCB reverse board 7, the two are perpendicular.

[0064] The two ends of the PCB reverse board 7 along the length direction are respectively connected to the two support plates 13, the PCB reverse board 7 is located at one end of the support plate 13 away from the push-pull part 16, the PCB reverse board 7 is perpendicular to the support plate 13 and the base plate 11 respectively, the reverse board gold finger 9 is located on the side of the PCB reverse board 7 away from the support plate 13, the setting height of the reverse board gold finger 9 is the same as the setting height of the second slide bar 18, the setting height of the second slot 8 is the same as the setting height of the second slide rail 17, and when the support frame 10 is used to test the back side of the aging board, the position of the aging board is 110mm higher than the position of the aging board when the aging board is tested on the front side on the aging test machine.

[0065] refer to Figure 2 and Figure 6 The embodiment of the present invention provides an aging test method for performing an aging test on an aging board using an aging test machine, comprising the following steps:

[0066] S101: The front side of the aging board is oriented toward the side away from the base 1, and the aging board is slidably installed on the base 1 through the first slide rail 6, and the aging board is connected to the PCB connecting board 3;

[0067] S102: Test the front side of the aged board;

[0068] S103: After the test is completed, the aging board is separated from the PCB connecting board 3, and is separated from the base 1 through the first slide rail 6;

[0069] S104: Slidingly installing the support frame 10 on the base 1 through the first slide rail 6, and connecting the PCB reverse connection plate 7 with the PCB connection plate 3;

[0070] S105: The back of the aging board is slidably mounted on the support frame 10 through the second slide rail 17 with the back of the aging board facing the side away from the base 1, and the aging board is connected to the PCB reverse board 7;

[0071] S106: Test the back of the aged board;

[0072] S107: After the test is completed, the aging board is separated from the PCB reverse board 7, and is separated from the support frame 10 through the second slide rail 17;

[0073] S108: Separate the support frame 10 from the base 1 via the first slide rail 6 .

[0074] At this point, the front and back side tests of the aging board are completed in sequence, and the next round of front and back side tests can be carried out on the new aging board.

[0075] In summary, after the transformation, the aging test machine is increased with a support frame 10 and a PCB reverse board 7. The present invention crosses the connection signals between the PCB connecting board 3 and the aging board through the PCB reverse board 7, and enables the aging board to work when the back side faces upward under the support of the support frame 10, so that the aging test machine can test the back side of the aging board conveniently. The present invention has the characteristics of simple structure and easy use.

[0076] This specific implementation manner is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An aging test machine, characterized in that: The machine base comprises a machine base, wherein the machine base is provided with a PCB connecting plate and an MCC driving plate, wherein the PCB connecting plate is connected to the MCC driving plate, wherein the PCB connecting plate is provided with a first slot, wherein the top of the machine base is provided with side panels along two opposite edges of the machine base, respectively, wherein the two side panels are provided with first slide rails with openings opposite to each other, wherein the first slot faces the area between the two side panels, and wherein the setting height of the first slide rail is the same as the setting height of the first slot; The base is provided with a PCB reverse connection board, the PCB reverse connection board is provided with a second slot and a reverse connection board gold finger, the reverse connection board gold finger is connected to the first slot, the first slot is parallel to the second slot, and the arrangement order of the ports in the first slot and the second slot is opposite; Wherein, the PCB reverse connection plate is arranged in a vertical direction of the PCB connecting plate; and the setting height of the second slot is higher than that of the first slot.

2. The aging test machine according to claim 1, characterized in that: A sliding plate is detachably provided on the machine base, and there are two sliding plates. The two sliding plates are provided with second sliding rails that slide with the aging board. The setting height of the second sliding rail is the same as the setting height of the second slot. The sliding plate is located on the side of the PCB reverse plate away from the PCB connecting plate.

3. The aging test machine according to claim 2, characterized in that: A base plate is arranged on the machine base, and the base plate is detachably connected to the aging machine test platform, and the two sliding plates are relatively fixedly arranged on the same side of the base plate.

4. The aging test machine according to claim 3, characterized in that: Slide bars are respectively arranged on both sides of the base plate. The slide bars are parallel to the sliding plate and slideably cooperate with the first slide rail. The base plate slides along the direction of the first slide rail by using the two slide bars.

5. The aging test machine according to claim 4, characterized in that: The sliding plate comprises a sliding part and a push-pull part, the sliding part and the push-pull part are fixedly connected, the sliding part is fixedly connected to the support plate, the second slide rail is arranged on the sliding part, and the push-pull part is located on a side of the sliding part away from the second slide rail; The support plate is perpendicular to the base plate; the support plate is parallel to the slide bar.

6. A method for modifying an aging test machine, characterized in that: The machine base comprises a machine base, the machine base is provided with a PCB connecting board and an MCC driving board, the PCB connecting board is connected to the MCC driving board, the PCB connecting board is provided with a first slot, and the transformation method comprises: Side panels are respectively arranged at the top of the base along two opposite edges of the base, the two side panels are provided with first slide rails with openings facing each other, the first slot faces the area between the two side panels, and the setting height of the first slide rail is the same as the setting height of the first slot; A PCB reverse connection board is arranged on the base, the PCB reverse connection board is provided with a second slot and a reverse connection board gold finger, the reverse connection board gold finger is connected to the first slot, the first slot is parallel to the second slot, and the arrangement order of ports in the first slot and the second slot is opposite; Wherein, the PCB reverse connection plate is arranged in a vertical direction of the PCB connecting plate; and the setting height of the second slot is higher than that of the first slot.

7. The modification method of an aging test machine according to claim 6, characterized in that: A sliding plate is detachably arranged on the machine base, and there are two sliding plates. The two sliding plates are provided with second sliding rails that slide with the aging board. The setting height of the second sliding rail is the same as the setting height of the second slot. The sliding plate is located on the side of the PCB reverse plate away from the PCB connecting plate.

8. The method for modifying an aging test machine according to claim 7, characterized in that: A base plate is arranged on the machine base, and the base plate is detachably connected to the aging machine test machine platform, and the two sliding plates are relatively fixedly arranged on the same side of the base plate.

9. An aging test method for performing an aging test on an aging board using the aging test machine according to claim 1, characterized in that: The following steps are involved: Place the front side of the aging board toward the side away from the base; The gold finger of the aging board faces the first slot, the aging board is inserted into the first slide rail, and slides along the first slide rail toward the first slot until the gold finger of the aging board is inserted into the first slot and connected with the PCB connecting board; Test the front side of the aged board; After the test is completed, the aging board is moved in the reverse direction and separated from the PCB connecting board; Connect the gold finger of the reverse board to the first slot; Place the back of the aging board toward the side away from the base; Connect the gold finger of the aging board to the second slot; Test the back of the aged board; After the test is completed, the gold finger of the aging board is separated from the second slot; The PCB reverse connection board is separated from the PCB connection board.

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