The bumpy experience of Samsung SM321 repair
From: Author:Mark Hardy Publish time:2021-09-08 11:58 Clicks:5
Today, we are repairing an SM321 machine that has not been started for 5 years. The company intends to use the four unused SM321 and one SM421 placement machines. The reason is that the company has been relatively busy recently. Let alone introduce the situation of these five machines. I heard from previous colleagues that these machines are all viruses, and the system is not universal with machines above SM421, and the production process is troublesome, so I put them aside and don't use them. What kind of virus is specific, let’s try it first. First prepare a formatted USB flash drive, then copy the SM321 program into the USB flash drive, insert the USB flash drive into the machine, and find that all the files in the USB flash drive become automatically A shortcut and a file that I can’t understand is attached. The technician next to you told me that you must not insert this USB flash drive into the computer and then open the file on the USB flash drive, otherwise the files in the computer will appear like this, only directly in Formatting in the computer is a bit too far-fetched to be nonsense, should we go back to these machines first?
If you want to remove the virus in the machine, you cannot install anti-virus software. I have tried it before, such as 360, Computer Manager, Rising, Kingsoft Internet Security, etc. I have tried it. The virus can be removed, but there are some important files in the machine. It will also be cleared up, resulting in failure to boot. The most direct way is to directly replace the new hard disk. As I said before, I have the experience of replacing the hard disk. First back up the file SYSTEM. When I turn on an SM321, the machine shows that it cannot be found. Hard disk, under what circumstances, I can’t even read a broken hard disk, so I kicked it hard, SM321 machine, opened the main box, and I can’t even find the shadow of a hard disk. Go back to the problem of this SM321. Come on, since this device does not have a backup hard disk, there is naturally no file SYSTEM. Let’s replace it with a new hard disk. Use the DiskGenius software in the U disk to partition and prepare a copy of the original factory. XP system of SM321, ready to install XP system on the machine.
After installing the XP system on the machine, what files are missing from the alarm, I wonder? Soon, the Lenovo machine should be similar to the computer. Should it be installed on the computer? If you have an idea, act immediately and find a computer with a CD-ROM drive to install. The result is that the alarm is still missing files, and I am depressed! Thinking of the previous experience of installing SM421, should I use the SM421 machine to install it, just do it, use the SM421 machine to install, the result is still a tragedy, and the original alarm is the same, what is the situation, then use the previous installation by myself The machine of the successful SM421 then reinstalled the SM321 system. The result was successfully installed, but I couldn’t figure it out. Finally, I heard from a friend on the Internet that I knew that there are still settings in the BOSS. Now I directly announce the following:
1. Standard CMOS Feature
Drive A:none
Halt on:ALL Errors
2. Advanced BIOS Feature
First Boot Device: CDROM
Second Boot Device: HDD-O
Third Boot Device:Disable
Boot Up Floppy seek:Disable
3. Interated peripherials
Onboard I/O chip setup:PWRON
After PWR Fail:on
4. Power management Setup
ACPI Fanction: Disable
Finally installed the long-lost XP system, and replaced it with a solid-state hard drive. The operation speed here is fast. Give yourself a thumbs up. The next step is to install the machine’s operating system, which is Mark5 V2090. The installation is OK, and a normal one Copy the SYSTEM file from the SM321 system to this machine, shut it down, and then start it, waiting anxiously...
I finally saw the long-lost but familiar picture, ready to go back to the origin. When back to the origin, what alarm occurred on the R axis, there is no record, and I forgot it. First check whether the R axis is stuck. After inspection, there is no stuck condition. This is depressing. First, short-circuit the safety door, and then load the voltage. I think it is actually the IDLE mode. In this mode, measure R. After measuring the voltage of the shaft, it is found that the R shaft has no voltage, and it can be rotated by hand in the normal IDLE mode. It should be in this case that the motor cannot be rotated when it is powered on! After observing the circuit diagram, it is found that all 3 R-axes are controlled by a 7043A-AXIS#4 board in the main box. After disassembling the main box, it is found that there is no light on the 7043A-AXIS main board, and there are just 2 wires next to it. The wiring head is CN10 from the circuit diagram. Normally, it is with 24V voltage. Quickly measure it, and there is no voltage. From the circuit diagram, CN10 is connected to the CN23 interface on the safety control Board lnterface. Only open the back cover to check After opening the cover of the safety control Board lnterface, it is found that the safety control Board lnterface does not have any live conditions. Even the LED on the board does not light up. The power supply to the board is CN1, which is 24V. Back to the front of the machine, there are two black rectangular parallelepipeds that supply the machine with 24V voltage. (We call it ACG) is a 220V voltage to 24V voltage. After measurement, there is no 24V voltage or 220V voltage. (The problem is changed. It's very simple) It should be the problem caused by the lack of phase voltage of the machine. Directly check the input voltage of the machine, 3 and live wire, both of them have 380V voltage, and no phase is found. It seems that the internal phase of the machine is missing. From the circuit diagram, you can see that there are two black rectangular 24V AC adapters. Connect the 220V power supply to the RST, and then directly check whether the RST is live or not. There is no problem. Then check the output terminal, and find that there is no voltage. There is a fuse between the input and the output. It should be that the fuse is hanging. Directly measure the fuse. , It was found that an 8A 220V ceramic fuse was burned out, replaced the fuse directly, and then restarted, the machine finally turned on, there is no problem returning to the origin, and then go directly to the machine to automatically find the origin position of XY, the parallel phase difference data of Y1 and Y2 , Everything is normal, and there is no problem after warming up for 2 hours. At this point, the replacement of the hard disk has completely come to an end, and I will write a summary of the repair process for the machine.
I thought that the repair is complete, just need to do the following head camera calibration. When the flight camera No. 2 head was just completed, the No. 2 head could not show images, and the problem appeared again. Looking at the circuit diagram, the flight camera was directly connected to the camera IO. BD and this board is directly connected to the vision I/F board in the main box, is there a problem with the vision I/F, not much nonsense, replace it directly, remove it from a healthy SM321 machine and replace it directly , I turned on with confidence, but found that the fault persists. It does not seem to be a problem with the vision I/F board. If you want to fly the camera’s data cable, you need to go through the XY tank chain. It may be a problem with the data cable. After all, this old machine also has The life expectancy is over 10 years old. Go to the back of the flight camera and remove the data cable of the No. 2 head. It is convenient to use a multimeter to judge directly. When the No. 2 flight data cable is pulled out, it is obvious that the data is very short. Then look at the online wiring. The code above is No. 3, I am happy, it is obvious that the 2nd data line is exchanged with the No. 3 data line, the data line is restored, the image appears on the 2nd and the 3rd, all the flying camera images Like inspection, there is no problem, and the problem is solved in this way.
Let’s continue with head camera correction. Here I want to explain. The correction methods can be divided into manual and automatic (brothers should understand). Today I chose automatic adjustment. When the adjustment is carried out on the 5th item, the head offset is No. 1 head. NOZZLE can’t be replaced automatically. It’s still the fault if you manually go to ANC to exchange NOZZLE internally. The alarm message means that the signal response is not timely or the red alarm is off 24V. After analyzing and reviewing the data, it is the reason why the automatic replacement of NOZZLE occurs. The fixture NOZZLE used is CNT20 and needs to be replaced with an angle. The following problems will occur: 1. R axis deviation 2. Z axis deviation 3. NOZZLE detection includes (1. Detection of NOZZLE Z axis data 2. Detection of NOZZLE Mirror S-axis data 3. Detect the position of NOZZLE, take the position of NOZZLE and put down the position of NOZZLE 4. Detect the recognition error of NOZZLE 5. Detect the light source used by NOZZLE) Through these inspections and adjustments, you can finally replace NOZZLE with ease , I am happy for myself first.
Let’s continue head camera calibration. The 5th item head offset is finally adjusted, and the 6th item is adjusted. The camera is flying and the machine alarms again. The MARK point image on the CNT20 NOZZLE fixture. However, no matter how I adjust the light source , The MARK of the fixture is either black or white. There is no black and white data at all. What is said is that the MARK on the fixture is black and white. There is a problem with the light source. First use a black paint pen to indicate the LED on the light source. Directly black, hehe, it is really passable, but after repeated attempts, it is dangerous to pass, so the machine throwing material is still high, so give up, you must do it again, first analyze the light source: 1. Side Light source 2. Internal light source 3. Side light source and internal light source control card 4. Mirror. First use the elimination method, first remove the hand from the simple, the side light source and the good machine directly exchange, first paint me with a black paint pen After the exchange, the problem remains the same. The following is the exchange mirror, because it is easy to remove the mirror, but the angle of the mirror needs to be adjusted. I will not introduce how to adjust the angle of the mirror here. After the exchange, a miraculous effect appeared. The MARK of the fixture Nozzle is very clear. It is easy to identify the MARK with a machine. It seems that it should be a mirror problem. I went to study the removed mirror and observe that the mirror surface is very beautiful. There are less than a few flaws, maybe you have bought the legendary fakes, right? I didn’t care about him, and I installed the broken mirror on a normal machine. The result was still the problem. It was 100% confirmed that there was a problem with the mirror. I suddenly remembered that there was a quick-replaceable mirror in the office drawer, but the surface was a little worn. I often used him as a mirror before. Direct replacement, the normal machine is already normal, and the repaired machine calibration has been completed.
Now adjust the following items:
1. The PCB stop position (main baffle) is the origin position of the machine
2. FEEDER reclaiming position, the front is the 121 station position behind the 21 station position
3. Throwing location and waste location
The adjustment of the machine is over, and the materials are loaded for production.
Today, there is a problem in production, and the machine has alarmed images before it has started, but a simple C0402 capacitor can't be imaged. Analyze the image on the monitor map carefully. The difference between the actual image and the actual image is exactly 90 degrees. There is no problem with manually retrieving the image. What's the matter? Called and asked friends in the same industry. They said that there might be a problem with the board behind the flying camera or the vision board, and it was another divine operation (exchange method). After refilling, the sound of the waves is still the same. In the end, there is no way. I remembered the light source adjustment of the flying camera in an accidental operation, but because there was no light source calibration NOZZLE on hand, there was no way to spend money to buy one. The middle producer asked if the machine was It can be produced, but there is no way. I have to bite the bullet and say that it can be produced. All materials are changed to a fixed camera to identify the image. Let the machine run first. It is also an explanation to the boss. Write an application to purchase the light source calibration NOZZLE.
The light source calibration NOZZLE is back today. First find the light source calibration NOZZLE data, and then learn how to adjust the flying light source. It’s a bit of embracing the Buddha before the adjustment. The light source adjustment is also going smoothly. The material production is reinstalled, and the long-lost problem is found. All resolved, and the machine started to produce smoothly. Since the hard disk has been replaced and the mechanical hard disk has been replaced with a solid state hard disk, the operation speed of the machine is much faster, and the response is also leveraged. Put away the tools and leave.