The following are some common faults and maintenance methods for Canon ink-jet printer: ** 1. Power supply failure ** 1. ** Failure symptoms and analysis ** - If the indicator light on the panel did not show up after turning it on, the fault might be in the power supply part of the printer. First, he understood the working principle of the power supply. The 220V alternating current was filtered, rectified, and smoothed to obtain about 300V direct current. After a series of circuit components, the power supply formed an oscillation. The sample voltage of the power supply was 28V. When the main voltage rose, it would be stabilized through the internal circuit. When the panel indicator light did not show after the power was turned on, it might be that the work process was not carried out. 2. ** Repair Case ** - For example, if the casing was opened and there was no +28V or +5V output, the fuse F1(2A/250) would be blown. In this case, it is necessary to further measure whether the filter capacity, the thermometer R1, and the bridge stack (RC1) are normal. If these components are normal, it may be that Q1 (the crystal) is damaged. If it is found that the c-e pole has been broken down and short-circuited, and if R6 is over-current and burned, ZD2 is broken down and short-circuited, the printer may return to normal by replacing F1, Q1, R6, and ZD2. ** 2. Print head related faults ** 1. ** Failure symptoms and analysis ** - Canon Canon BJ - 330 ink-jet printer's print head moved during self-test, but it couldn't print any characters. This situation might be related to the delivery tube connecting the ink box and the print head. If the casing was dismantled, the ink in the plastic delivery pipe connecting the ink box and the print head was intermittent. Normally, it should be filled with ink. During the power-on self-test, the ink in the pipe moved slightly but did not move for a while, which may be the negative pressure generated by the print head. 2. ** Repair Case ** - In response to the above situation, you can use tweezers to lift up the tube. If the ink movement in the tube is significantly faster, when the ink reaches the head of the printer, the character will be printed, which means that the transmission tube is not connected properly. At this time, after connecting the transmission pipeline, the printer could resume normal operation. ** 3. The indicator light is not on, and there is a fault ** 1. ** Failure symptoms and analysis ** - Canon Canon BJ - 330 ink-jet printer did not light up after it was turned on, and the printer did not respond. This meant that the power supply of the printer was faulty. The power supply of the ink-jet printer was a separate circuit board, which was used to convert the city power into the +5V and +28V voltage required by the printer. There were a total of six wires for the power supply output. Different color lines corresponded to different voltage. If the voltage of these circuits was abnormal during the measurement, it was usually the power circuit itself that was faulty. Read more exciting novels for free
The title of the English essay for the 2021 Shanghai High School Entrance Examination was "This time next year". The model was as follows: This time next year I will be enjoying my senior school life which I have expected for a long time. The life then will be as colorful as flowers. I will take an active part in all kinds of activities in high school because the saying goes ”All work and no play makes Jack a dull boy”. In addition, making friends will be on top of the list. This question was more abstract and gave the candidates a certain amount of imagination. It was difficult, but it still continued the characteristics of the previous years. It used "me" as the starting point and talked about the students themselves. It was convenient for the candidates to have something to say and express their feelings. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The following are some of the paper topics on the role of labor education in primary education: 1. " Labor Education: The Cornerstone of Shaping a Sound Character in Primary Education " 2. " The role of labor education in primary school education in promoting students 'all-round development." 3. " The key role of labor education in the primary school moral education system " 4. " The importance of labor education in primary school education to train students 'practical ability." 5. " Labor Education: The Only Way for Primary Education to Fulfill the Education Target " 6. " Exploring the influence of labor education on students 'value orientation in primary education." 7. " The role of labor education in cultivating students 'innovative thinking in primary education." 8. " Labor Education in Primary Education and the Construction of Students 'Sense of Social responsibility." <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
There was a pet photographer in Dongying. Dongying had a professional photography team to provide pet photography services, including pet photos, pet portraits, pet photos, pet identification photos, and pet videos. They also had professional teams, customized services, high-quality equipment, safety assurance, and fast production services. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
There was a way to make the folded school uniform look good: spread the school uniform flat, fold it first, pay attention to the top two corners of the school uniform, and then fold the bottom two corners, and then fold it back as a whole, so that the folded school uniform looked better. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Meng Ying was the eldest daughter of Ying Si, King Huiwen of Qin. People called her the Eldest Princess. She was raised by Madam Yong and her mother died early. She had a straightforward personality. She used to live freely and was friends with Mi Yue. The king of Qin, Ying Si, married her to the Yan Kingdom for the benefit of the country. Although she resisted, she had no choice but to accept it. After experiencing many hardships in the Yan Kingdom, King Kuai of Yan had sent her and her son to Korea as hostages. She also had some connection with the State of Chu. In history, there was a saying that she was the mother of King Zhao of Yan. In the novel "Biography of Meng Ying in the Palace of Chu," it was told that she was the sister of Duke Ai of Qin and married Prince Jian of the State of Chu. She was played by Mao Junjie in the TV series Legend of Mi Yue. In the drama, she was the Empress Dowager and a politician who worked hard to help her son ascend the throne. The original novel of the TV series " The Unique Empress of Generals " was called " The Rebirth of the Poisonous Empress of Generals." The original plot was equally exciting. You can click on the link below to read the original novel.
The novel, Hunting the Bull, provides the full text of " Wear It Quickly: The Scumbag Woman's Ex-Ex-Bathing Plan " for free reading. It also updates the latest chapters in real time. You can follow the novel for more content.
So the story of Loving You was," In this life, you can forget about escaping from my palm!" The female protagonist loved the male protagonist for ten years, but was misunderstood by the male protagonist as the murderer, and thus suffered all kinds of torture. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
From the reference materials, the plot of " Divine Dragon Guard " was top-notch and had a harem plot. The characters in the book were well portrayed and more in line with the arrogant style. The main character in " Arrogant City Blood Witch " accidentally got a mysterious blood bead and walked the path of blood witch. He punched the Nanshan nursing home and kicked Donghai kindergarten. He walked the path of being awesome and slapping people. He was also more arrogant. From the introduction of " My Arrogant Life ", it involved many scenes with many women and had a more arrogant style. However," the most arrogant " was difficult to define. Different readers might have different understandings and feelings about arrogance. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
My Life in Africa I have been living in Africa for a while, and it has been an amazing experience. In Africa, the people are very interesting. Their skin is black, but it's not rough at all. In fact, the skin of young African girls is very tender, just like a baby's. However, they seem to get old quickly and wrinkles come out easily. I also found that many African girls like to wear wigs. When you see them with their hair in many small braids, most likely it's a wig. There are a lot of wig shops around. The life here is quite different from what I expected before. I used to think that Africans all lived like in the primitive forest, but actually, in big cities, you can see modern things everywhere. There are luxury cars like BMW and Benz running on the streets. It's just like any modern city in the world. As for food, there is a big difference between the rich and the poor. Poor people often eat things like cassava flour because it's cheap. But the rich people, they like to eat Western food or Chinese food. Chinese food is becoming more and more popular here, especially fried rice. I also had some interesting language experiences. Sometimes, when people communicate in English here, it has a very special style. It's different from the standard English we learned at school. In conclusion, living in Africa has taught me a lot. It has broadened my view and made me understand that the world is full of diversity. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
theatres could be translated as "theater, theatre". " Choose " was equally exciting. Everyone was welcome to read it!