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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 people.

Because the cockpit was small enough to accommodate so many people, the operator and a maintenance crew had to stand on the circular walkway outside.

They already knew Peng Huading's intention, and several people's eyes were surprised: Can such a young man do it?

The most surprising thing is, of course, Li Yuxin, an engineer, because he knows Peng Huading's details very well, and he is naturally the most disdainful in his heart: grass! These leaders were really crazy and sent a salesman who sold batteries to come up and repair high-end equipment. Don't you know that he doesn't even do a good job of making his own company's product statements? Besides, how can a salesman have the ability to repair circuit boards? It is estimated that I was dumbfounded when I saw the dense printed circuits and integrated circuit chips on the circuit board.

However, this was arranged by the superior leader, and he couldn't fix them for a while, so of course it was good for him to stand up to the thunder. Therefore, he suppressed the disdain in his heart, tried to pretend to be polite, invited Peng Huading to the control platform, and smiled and pointed out the two faulty control boards to him.

After that, he talked a little bit about the phenomenon of raw, but did not do much technical introduction.

In Li Yuxin's view, even if he makes an introduction, he is talking about chickens and ducks, which is purely a waste of energy and time, and it is estimated that Peng Huading himself is not willing to listen.

Peng Huading did not rush to analyze the fault, but stood in front of the console and looked at the container slightly below the cockpit and asked, "Li Gong." Can the claws of this container lock themselves? ......, I mean to say. If we do repairs here, will we unlock its grippers and let the container fall off when we test the machine? ”

Li Yuxin was very confident that he could lock himself, but when he thought that the control board was likely to come out of the control signal that everyone did not know, he unlocked the claw by mistake. If the claw is suddenly unlocked in the air, the container is likely to fall from the air, damaging not only the ship below. Killing and injuring the seafarers on the ship, and breaking the important equipment in the container, this responsibility is not something that he Li Yuxin can bear, even if there is only a one in 10,000 possibility, he does not dare to pat his chest.

He hesitated for a moment and said, "If you don't test the machine, don't start the control program." It should be self-locking, which is a must for the device. However, if there is an unexpected signal going out, then I don't know. ”

Peng Huading nodded, and said in a command-like tone: "You cut off the power supply of the gripper for me to ensure that the gripper is always locked." ”

Li Yuxin felt that he was enough to keep his voice down. I feel that I have completely abandoned the lofty posture I had when I was bidding, and I tried to cooperate with Peng Huading, but now Peng Huading actually regarded himself as his top boss, used chicken feathers as an arrow, and pointed fingers at me. That's too much, isn't it? 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 the two parties, Li Yuxin really couldn't think about it for a while, and he said a little unhappily with a pimple: "Xiao Peng, you are responsible for selling batteries." You don't know that it is not easy to cut off the power of a small part alone for such a large device, and it will be troublesome......"

Unexpectedly, another maintenance worker immediately said, "Okay." We only need to cut off the power supply of the aZB-3 gear hydraulic pump, and if we don't let this hydraulic pump work, the gripper will always be locked. ”

Li Yuxin was just complaining, but when this maintenance worker said it, it seemed that he was deliberately uncooperative because of jealousy, and he was very dissatisfied with this colleague in his heart, glared at the other party, and muttered in a low voice: "Hmph, is your surname Liu capable?" ”

The maintenance man was stunned for a moment, and his face couldn't help but change.

The other maintenance personnel also looked at Li Yuxin in puzzlement, feeling that Li Yuxin was wrong today, taking gunpowder? Others are doing you a favor, how do you treat others like this?

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

The maintenance worker surnamed Liu did not do it immediately, but looked at Li Yuxin embarrassedly: after all, Li Yuxin is his leader, Peng Huading is just an outsider, and when 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 personnel surnamed Liu were even more embarrassed, and their eyes still fell on Li Yuxin's face.

Li Yuxin saw that everyone's eyes fell on him, and he couldn't help but be annoyed, and scolded: "Liu Yangjun, you're really fucking stupid, right? What Xiao Peng wants you to do, you can do it, what are you watching me do? You're all the same, listen to him! ”

He didn't dare to bear the charge of not cooperating, and he couldn't afford to be responsible for failing to repair it in time.

The maintenance man named Liu Yangjun was obviously relieved, and quickly stood up straight, stretched out his hands, pulled open the top cover on the side of the cockpit, pulled out a safety from it, and said softly: "Cut off." ”

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

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

Liu Yangjun immediately said: "It must be broken, these pins have scorched traces, it should be that the crane suffered a lightning strike, and the lightning current reached here for some reason." As for whether there is a problem with the circuit behind it, we haven't judged it yet......"

Liu Yangjun is very good at technical things, Peng Huading did not ask, he continued: "This kind of circuit board is multi-layer printing, and we don't have enough equipment to carry out relevant inspections. We don't have this kind of power management chip here, and we can't replace it. ......, according to our judgment, there is no possibility of repairing this faulty control board, and the safest way is to replace it as a whole. ”

Obviously, what he said is reasonable, with the exhibition of modern technology, not only the integrated circuit is becoming more and more sophisticated, the internal structure is becoming more and more complex, that is, the pcB printed circuit board is also more and more advanced, more and more delicate, far from the kind of two-sided single-layer printing that people have understood and seen in the past, but double-sided multi-layer, one layer covers one layer, and the printed line is also very thin and fine, and the size of it cannot be described by the thickness of the hair.

Just like integrated circuit chips, if they are broken and cannot be repaired, the best, safest and most economical way is to replace them in their entirety. Whoever wants to say that he repairs integrated circuit chips or pcB circuit boards by himself, others either think that he is a liar or a real fool.

However, there are no absolutes, as in the current situation, in the extreme case of time urgency and waiting for new replaceable parts to arrive, maintenance personnel have to think of other ways and have to do things that would not normally be done.

Peng Huading smiled bitterly: "I know." But can your leaders wait for the spare parts to arrive? If we can't fix it, we have to try to fix it. ”

Li Yuxin was much calmer, but after listening to Peng Huading's words, he couldn't help but say: "It's difficult for a good woman to cook without rice, right?" We don't have this kind of power management chip at hand, and even if we do, we can't guarantee that the back circuit is fine, once the inside of the printed circuit board is burned out, or other chips are broken, everything is in vain. ”

Peng Huading said to Li Yuxin: "You reported the situation to the leader just now, but the leader didn't agree with you to wait passively, didn't you?" Now all that's left is to repair the road. There is little hope, but we have to do it. As long as we haven't verified that the circuit behind or the board is broken, we should try hard. ”

I have to say that Peng Huading is now standing at the high point of "morality", and there are leaders behind him to support him, Li Yuxin can't oppose it at all, even if he knows that Peng Huading is doing useless work, he must support it.

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

Although his technology is not good at electronic circuits, because there are also fewer circuit boards in electromechanical equipment, he has a lot of circuit boards, and his level is far higher than that of these maintenance personnel in front of him. It's just that he used to come into contact with higher-level circuit boards, and these low-level circuit boards are rarely encountered, but he believes that as long as he hears what they say, as long as he ponders for a while, the principle of the circuit board in front of him will be very clear.

What makes him speechless is that although there are four maintenance personnel here, none of them are really proficient in the working principle of the circuit board, that is, Liu Yangjun, who knows a lot about the crane and is very skilled in the structure of the crane, is only very familiar with the main mechanical mechanism of the crane, but he is confused about this control circuit board.

None of the people could explain the principle.

Peng Huading was very strange at the beginning, but after a little thought, he understood:

This is a shipping company, and the main work of the company's mechanical and electrical maintenance personnel is in the maintenance of the ship's mechanical and electrical equipment. Cranes and other terminal port machinery equipment are only the company's auxiliary equipment, and the maintenance of these equipment is only the "amateur" work of maintenance personnel, and no one pays attention to it at all.

Who will spend the time and effort on such a branch device?

If the company's maintenance personnel are proficient in the maintenance of small branch equipment of these auxiliary equipment, how much more maintenance team must be raised? Looking all over the world, there is absolutely no company that will maintain so many maintenance personnel, and they will only use their main strength to maintain the main equipment.

No one thought that today's crane would suddenly be struck by lightning, and it happened that the military equipment was being hoisted, and the unfortunate things really came together.

(The second update, I really want to shout out: give me a monthly pass)