Advantech Motherboards – Solve common faults in embedded motherboards

First, check the board

1. Observation: whether there is ignition, ignition, bubbles, surface falling and rust of the hydraulic jack.

2. Watt-hour meter test standard: 9V, GND resistor is very small (less than 50 ohms).

3. Check the switching power supply: for the damaged industrial control automation computer motherboard, the working voltage can be slightly increased by 0.5-1V, and the integrated circuit chip on the pants board of the clothes will be rubbed hard after starting, so that the poor integrated circuit chip is hot and identified.

4. Logical pen inspection: check whether the signal on the input, output and manipulation poles of the important abnormal integrated circuit chip can be used and whether it is high or low.

5. Identify each working area: The embedded industrial computer motherboard generally has established job responsibilities in the area, such as: nature reserve, digital clock area, trend socket area, posture area, noise causing area, etc.

2. Troubleshooting

1. According to the indication of the manual, the abnormal integrated circuit chip will first check whether there is a signal at the input and output ends, and if there is no signal at the input and output ends, then check whether the integrated circuit chip has all the manipulation signals. If so, the probability of the IC chip being broken is very high, and there is no manipulation signal, so it is possible to authenticate the previous vertex until the damaged IC chip is discovered.

2. Do not remove the integrated circuit chip of the same model, specification or operation procedure from the telephone pole, and observe whether the embedded industrial control computer is better after starting, so as to clarify whether the integrated circuit chip is damaged.

3. Find a way to disconnect and leak wires: If you find that there are common faults of short circuit faults in the middle of some communication networks and wire connectors, 9V or many other integrated circuit chips that cannot be connected, you can cut off the route and accurately measure it to distinguish whether it is a problem of integrated circuit chip or a surface wiring problem, or to see if the socket is better than other integrated circuit chips that are welded to the integrated circuit chip with incorrect waveform by signal welding, and to distinguish the advantages and disadvantages of integrated circuit chips.

4. Comparison method: Find a computer motherboard with the same content, compare and accurately measure the pins and waveforms and total number of the relevant integrated circuit chips to determine whether the integrated circuit chips are damaged.

5. ICTEST is used to automatically test integrated circuit chips in the microcomputer universal single-chip microcomputer development board.

3. Disassembly

1. Foot cutting method: do not hurt the computer motherboard, can not be reused many times.

2. Tin drag method: weld all the tin on both sides of the integrated circuit chip pin, drag it back and forth with a high-temperature electric soldering iron, and pull out the integrated circuit chip (the circuit board is very easy to destroy, but the inspection integrated circuit chip can be saved).

3. Barbecue: Put the barbecue on the alcohol lamp, gas stove and heat treatment stove to bake, and the integrated circuit chip will go out after the tin on the computer motherboard melts (not easy to grasp).

4. Tin tea canister method: make a unique tin tea canister in a heat treatment furnace. After the tin is melted, the integrated circuit chip to be unloaded on the computer motherboard can penetrate into the tin tea can, and the integrated circuit chip can be clearly proposed without destroying the computer motherboard, but the industrial equipment is not easy to manufacture.

5. Electrically heated gas welding gun: use a special type of electric heating gas welding torch to remove the integrated IC, scrape off part of the integrated circuit chip pins to be removed, so that the integrated circuit chip after tin melting can be removed.

In addition, one of the difficult problems of the embedded industrial computer is that you must press the F1 key after turning it on. The reason for this problem is that the complementary hydroxide semiconductor material is not set up correctly. When the embedded industrial computer gradually checks itself, it will find that some mechanical equipment is not installed, so it will kindly prompt you to press F1 again. However, if the equipment and machinery are turned on in a complementary hydroxide semiconductor material, the problem may arise. After booting correctly, select the advanced settings option from the basic I/O system configuration of the industrial control system electronic computer, look for floopyseek in Lailan, and set it to disable.

Advantech Motherboards – Solve common faults in embedded motherboards

Advantech Motherboards – Solve common faults in embedded motherboards

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