Dummy load impedance diagnosis card for CPU test
By designing a false load impedance diagnostic card and using LED lights to indicate CPU pin abnormalities, the problem of difficult troubleshooting of false soldering or open circuits on CPU pins in traditional methods is solved, fast and accurate detection and positioning are achieved, and detection efficiency is improved.
Patent Information
- Application Number
- CN202422811809.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Traditional methods are difficult and inefficient in troubleshooting false soldering or open circuits on CPU pins, and are unable to accurately determine the specific abnormal problem points.
A dummy load impedance diagnostic card is designed. The card is equipped with contacts connected to the CPU pins and an LED light. A loop is formed through a battery and a resistor. The LED light turns on and off to indicate abnormalities, and the abnormal signal point can be quickly located.
It can quickly and accurately detect CPU pin open and short circuit, improve work efficiency, and is highly intuitive, replacing the method of measuring one by one with a multimeter.
Smart Images
Figure CN223450126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mainboards, in particular to a dummy load impedance diagnostic card for CPU testing. Background Art
[0002] When repairing a computer motherboard, a false solder joint or open circuit on any CPU pin can cause the motherboard to not boot. Traditional troubleshooting and measurement methods require significant time to identify the source of the anomaly. Specifically, driven by market demand, traditional motherboard repair and testing methods typically rely on power-on measurements of voltage, clock, and reset, followed by running code with a debug card to roughly pinpoint the cause. These methods are unable to accurately identify the specific CPU pin impedance anomaly. Furthermore, once an open circuit is identified, the CPU pins must be individually measured with a multimeter, resulting in significant inefficiency. Utility Model Content
[0003] In view of the above technical problems, the utility model provides a dummy load impedance diagnostic card for CPU testing to solve the problem of difficulty in troubleshooting false soldering or open circuit of CPU pins in the prior art.
[0004] Other features and advantages of the present invention will become apparent from the following detailed description, or may be learned in part from the practice of the present invention.
[0005] A dummy load impedance diagnostic card for CPU testing comprises a card body, the card having a plurality of contacts connected to respective pins of the CPU and a plurality of LED lights corresponding to the respective pins of the CPU, the card further comprising a battery and a resistor, one end of the battery being grounded and the other end being connected to one end of the resistor, the other end of the resistor being respectively connected to one end of each of the LED lights, the other end of the LED lights being grounded, and the plurality of contacts being respectively arranged between the corresponding LED lights and the resistors.
[0006] Furthermore, the battery is a button battery.
[0007] The technical solution of the utility model has the following beneficial effects:
[0008] The dummy load board for CPU testing of the utility model can quickly and accurately detect open circuits and short circuits of BGA and CPU sockets, and use the on and off of LED lights to indicate each bus and control signal, replacing the method of measuring one by one with a multimeter. It is easy to use, intuitive, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of a dummy load impedance diagnostic card for CPU testing according to an embodiment of this specification. DETAILED DESCRIPTION
[0010] Example implementations are now described in greater detail with reference to the figures. Like reference numerals can be used to refer to like elements throughout. The example implementations can be implemented in numerous ways, and are not limited to the examples described herein; instead, examples are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example implementations to those skilled in the art. The described features, structures, or characteristics can be combined in one or more implementations. In the following description, numerous specific details are provided to give a thorough understanding of implementations of the disclosure. One skilled in the relevant art will recognize, however, that the implementations of the disclosure can be practiced without one or more of the specific details, or
[0011] As Figure 1 As shown in the figure, a false load impedance diagnostic card for CPU test is provided, including a card body, a plurality of contacts 101 connected with each pin of the CPU and a plurality of LED lamps 102 corresponding to each pin of the CPU are arranged on the card 100, the card further includes a battery 104 and a resistor 103, one end of the battery 104 is grounded, the other end of the battery 104 is connected with one end of the resistor 103, the other end of the resistor 103 is connected with one end of each LED lamp 102 respectively, the other end of the LED lamp 102 is grounded, and the plurality of contacts 101 are arranged between the corresponding LED lamp 102 and the resistor 103.
[0012] The battery 104 is a button cell.
[0013] Wherein, the impedance of the CPU pin to the DDR data line, address line and signal control line to ground is basically consistent, the card 100 adopts external power supply series resistor 103 and LED lamp 102, in the test, the pin of the CPU is in corresponding contact with the contact of the card, in normal working, the voltage is limited by the resistor 103, and a loop is formed with the LED lamp 102, and the LED lamp 102 emits light. If one of the signals is open, one end of the LED lamp 102 has no loop, so that the LED lamp 102 cannot be lighted, and the abnormal problem point can be found according to the corresponding abnormal filament printing, and the abnormal signal point is quickly positioned.
[0014] The technical scheme of the utility model has the following beneficial effects:
[0015] The false load card for CPU test of the utility model can quickly and accurately detect the open circuit and short circuit of the BGA and CPU seat, uses the light and extinction of the LED lamp to indicate each bus and control signal, replaces the method of measuring one by one by the multimeter, is convenient to use, is intuitive, and improves the work efficiency.
[0016] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application. In addition, those skilled in the art can understand that although some embodiments described herein include certain features rather than other features included in other embodiments, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the above claims, any one of the claimed embodiments can be used in any combination. The information disclosed in the background section is only intended to deepen the understanding of the overall background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art.
Claims
1. A dummy load impedance diagnostic card for CPU testing, characterized in that: The board includes a card body, which has a plurality of contacts connected to the respective pins of the CPU and a plurality of LED lights corresponding to the respective pins of the CPU. The board also includes a battery and a resistor. One end of the battery is grounded, and the other end is connected to one end of the resistor. The other end of the resistor is respectively connected to one end of each of the LED lights, and the other end of the LED lights is grounded. The plurality of contacts are respectively arranged between the corresponding LED lights and the resistors.
2. The dummy load impedance diagnostic card for CPU testing according to claim 1, wherein: The battery is a button battery.