Following the vertical metal ladder, Peng Huading quickly climbed up.

There are three maintenance personnel in the cockpit of the tower crane, plus Li Yuxin and the operator, a total of five.

Because the cockpit is not large and cannot accommodate so many people, the operator and a maintenance worker who have nothing to do has to stand on the ring walkway outside.

They already knew what Peng Huading came from, and the eyes of several people were surprised: Can such a young man be okay?

The most surprising thing was of course the engineer Li Yuxin, because he knew Peng Huading's background very well, so he naturally disdained the most: Grass! These leaders were so crazy that they sent a salesperson selling batteries to repair advanced equipment. Don't you know that he was not even doing a good job in his own company's product statement? Besides, how could a salesman have the ability to repair circuit boards? I guess he was stunned when he saw the dense printed circuits and integrated circuit chips on the circuit boards.

However, this was arranged by the superior leader, and he was unable to repair them for a while. It would be good for him to fight against the thunder. Therefore, he suppressed his inner contempt and tried to act politely and invited Peng Huading to the console, and smiled and pointed the two faulty control boards to him.

Afterwards, he briefly talked about what happened, but did not give much technical introduction.

In Li Yuxin's opinion, even if he introduces it, he will talk to each other. It is a waste of energy and time. I guess Peng Huading himself is unwilling to listen.

Peng Huading did not rush to analyze the fault, but stood in front of the operating table and looked at the container slightly lower than the cockpit, asking: "Mr. Li. Can the grippers of this container be locked by themselves?..., I mean. If we do repairs here, will we unlock its grippers and let the container fall down during the test machine?"

Li Yuxin was very confident that he could lock himself, but he thought that the control board was likely to send out control signals that everyone didn't know during the test, which led to mis-unlocking of the grippers. Once the grippers suddenly unlocked in the air, the container may fall from the air, which will not only smash the ship below. Kill and injured the seafarers on the ship, but also smash the important equipment in the container. This responsibility is not something that Li Yuxin can bear. Even if it is only one in ten thousand, he dare not pat his chest.

He hesitated for a moment and said, "If you don't try the machine and don't start the control program, you should be able to lock it yourself, which is what the device must do. However, if there is an unexpected signal, I don't know."

Peng Huading nodded and said in an orderly tone: "Disconnect the power supply of the grippers to make sure the grippers remain deadlocked."

Li Yuxin felt that he was humble enough. He felt that he had completely abandoned the arrogant attitude he had during the bidding and tried hard to cooperate with Peng Huading. But now Peng Huading actually regarded himself as his boss, using chicken feathers as a command arrow, and pointed at me. This is too much, right? I don't ask you to be respectful to me, but at least you have to respect me. Isn't it?

Faced with the sudden reversal of the identities of both parties, Li Yuxin was really unable to think about it. He was a little unhappy and said unhappy: "Xiao Peng, you are responsible for selling batteries. You don't know that it is not easy to cut off the power supply of a small component for such a large device, and there will be troubles..."

Unexpectedly, another maintenance worker immediately said: "Okay. We just need to cut off the power supply of the AZB-3 gear hydraulic pump. If this hydraulic pump is not allowed to work, the gripper will be locked all the time."

Li Yuxin was just complaining, but when the maintenance staff said that he seemed to be uncooperating because of jealousy, and he was very dissatisfied with this colleague. He glared at the other party and muttered in a low voice: "Hmph, is it your capable person in your surname Liu?"

The maintenance worker was stunned and his face changed.

The other maintenance personnel looked at Li Yuxin in confusion, feeling that what happened to Li Yuxin today? He took gun medicine? Others are helping you, why are you treating others like this?

Peng Huading looked down at the control board and said, "Then you can cut off the power supply of this hydraulic pump."

The maintenance worker named Liu did not take action immediately, but looked at Li Yuxin awkwardly: After all, Li Yuxin is his leader, and Peng Huading is just an outsider. Once he leaves, he still has to work under Li Yuxin.

Peng Huading, who was about to unplug the circuit board, saw that the maintenance worker did not move and urged: "Is it difficult to cut off the power supply? Hurry up!"

The maintenance staff named Liu was even more embarrassed, and their eyes were still on Li Yuxin's face.

Seeing that everyone's eyes were all on him, Li Yuxin couldn't help but feel angry and cursed: "Liu Yangjun, are you so fucking stupid? Xiao Peng wants you to do whatever you want, what are you watching me? You are all the same, listen to him!"

He dared not bear the charge of not cooperating, nor could he bear the responsibility of failures not being repaired in a timely manner.

The maintenance worker named Liu Yangjun was obviously relieved, and soon stood up straight, stretched out his hands, pulled a lid on the top of the side of the cockpit, pulled out a security from the inside, and said softly: "Search."

Seeing Liu Yangjun's extremely skillful appearance, Peng Huading had a good impression of the maintenance staff, but he didn't say anything, but carefully pulled out the main control circuit board and held it in his hand and looked at it carefully.

After looking for a while, he asked Liu Yangjun: "Is this power management chip broken by high current?"

Liu Yangjun immediately said: "It must be broken. These pins have traces of burning. It should be that the crane was hit by lightning. The lightning current reached here for some reason. As for whether there is a problem with the circuit behind it, we have not yet judged..."

Liu Yangjun is very good at technical matters. Peng Huading did not ask, but continued: "This kind of circuit board is multi-layer printing, and we do not have enough equipment to conduct relevant inspections. We do not have this power management chip here and cannot be replaced... According to our judgment, there is no possibility of repairing this faulty control board. The safest way is to replace it as a whole."

Obviously what he said makes sense. With the development of modern technology, not only integrated circuits have become more and more sophisticated, but also PCB printed circuit boards have become more and more advanced and more delicate. They are far from the two-sided single-layer printing that people have seen in the past, but are double-sided multi-layer, covering one layer with another, and the printing circuits are also very thin, and the thickness of the hair cannot be used to describe its size.

Just like integrated circuit chips, if they are broken, they cannot be repaired at all. The best, safest and most economical way is to replace them as a whole. Anyone who wants to say that they are repairing integrated circuit chips or PCB circuit boards is either a fool or a real fool.

However, things are not absolute. Just like in this situation, in the extreme situation where time is urgent and new replacement parts cannot be arrived, the maintenance personnel have to think of other ways and have to do things that they would not do under normal circumstances.

Peng Huading smiled bitterly and said, "I know. But can your leaders wait for the arrival of spare parts? We must try to repair them even if we can't."

Li Yuxin has become much calmer, but after hearing Peng Huading's words, he couldn't help but say: "It's hard to cook without rice, right? We don't have this kind of power management chip on hand. Even if we have one, we can't guarantee that the circuit behind the circuit is fine. Once the inside of the printed circuit board is burned or other chips are broken, everything will be in vain."

Peng Huading said to Li Yuxin: "You just reported the situation to the leader, but the leader disagrees with you waiting passively, right? Now all that is left is to repair this path. Although the hope is slim, we still have to do it. As long as we do not confirm that the circuit or circuit board behind is broken, we should try it."

It has to be said that Peng Huading is now at the height of "morality" and has a leader behind him to support him. Li Yuxin cannot object at all. Even if he knows that Peng Huading is doing useless work, he must support him.

Peng Huading directly began to ask about the working principle of the circuit board.

Although his technology is not good at electronic circuits, because there are few control circuit boards in electromechanical equipment, he has contacted many circuit boards, and his level is far higher than that of the repair personnel in front of him. However, he used to have contact with more advanced circuit boards, and these low-level circuit boards rarely encountered. But he believed that as long as he heard their statement and thought about it for a while, the principle of the circuit board in front of him would be very clear.

What made him speechless was that although there were four maintenance personnel here, none of them were truly proficient in the working principle of circuit boards. It was the one who knew a lot about cranes and was very skilled in the construction of cranes. It was only familiar with the main mechanical mechanisms of the cranes, but was confused about this control circuit board.

None of the few people can explain the principle clearly.

At the beginning, Peng Huading was very strange, but he understood after thinking about it a little:

This is a shipping company. The main job of the electromechanical maintenance personnel in the company is to repair the mechanical and electrical equipment of ships. Cranes and other terminal port equipment are only the company's auxiliary equipment. The maintenance of these equipment is only the "amateur" work of the maintenance personnel, and no one pays attention to it. Moreover, when repairing the circuit control part of cranes and other equipment, people often take overall replacement, or simply ask equipment manufacturers to repair it.

Who would spend time and energy on this branch device?

If the company's maintenance personnel are allowed to be proficient in the maintenance of small branch equipment of these auxiliary equipment, how big is a huge maintenance team? Looking around the world, there is absolutely no company that can maintain so many maintenance personnel, and they will only use their main strength to maintain the main business equipment.

No one expected that today's lifting opportunity was suddenly hit by lightning, and happened to be lifting military equipment again. The unlucky things really got together.
Chapter completed!