The term photocopying machines, which all too often depend on him, is true. Since the reform and opening up of these machines, the technology has become more advanced and the role of the people has become even more important. Many of the materials, documents have always required photocopying to continue their preservation, and the position of photocopying machines has become increasingly important, whether in schools, at home or in companies where people come from. However, what should be done about the photocopying machine failure。
Canon np270 image failure processing
Longitudinal black belt failure in photocopies of the canon np270:
During the photocopying, the photocopy suddenly turned black, but there were words in the black。
Analysis and overhaul:
A test adjustment of the concentration pole on the operating panel continued. According to the working power of the copier, the main reasons for the breakdown were: (1) damage to the controller; (2) three sets of ill-assembly components; (3) abnormality of the mechanical system; and (4) failure of the electrical circuits for spot detection。
None of the first three sets of electroshock components and direct flow (dc) controllers found abnormalities. Re-opening for photocopying and observation of the photocopying machine mechanical system is generally normal. And then we're going to test the level of the circuit board for the output voltage pot, and we're going to find that the voltage is abnormal. Checking the electrical spot detection circuits and finding damage to the effects transistor (k186d)。
Treatment:
Replaced with a test machine after the same model field effect transistor (k186d), failure resolution。
Lightness (ii) failure in photocopying of the np270:
Analysis and overhaul:
Photocopied, and observed that both of the light lights on the high-pressure generator were lighted as the sensor drums were running. Checking for reprinting steering boards with paper transmitters without abnormality, reprinting electrons high pressure cables good. Based on the above test results, the malfunctions were judged in the light control circuit。
As the scan moves forward, the switch adjusters, while measuring the exposure light adjuster-driven voltage with a universal meter, are found to be abnormal and should normally vary between 10 and 16 v. A careful examination of the relevant metaware found that the direct flow controller had been damaged。
Treatment:
Replaced with same-type straight-flow controller test, troubleshooting。
The complete white failure of photocopying of the npa2z photocopying machine:
The copies are all white and without any images。
Analysis and overhaul:
Photocopies were opened and it was observed that the blank exposure light was not on during the advance of the manuscript. Checks of the interplugs on each printed circuit board and the interplugging of high-pressure cable lines between the electrons were conducted with good contact。
Try to place the address of the service i/o display in ea, and find that the epocher was at high level during the previous rotation to the later period, thus determining that the high voltage transformer or the visual bias control circuit was malfunctioning. After careful examination, hvt was found to be damaged。
Treatment:
Replaced with the same type of hvt test, troubleshooting。
The complete black failure of photocopying of the npa2z photocopying machine:
Whether the original table contains white paper or images, the photocopy is all black and without any characters。
Analysis and overhaul:
The reasons for the total blackness of photocopies are mainly: 1) the exposure light is not on; 2) the electrons are poor; 3) anomalous operation of the optical system; 4) damage to or deterioration of the sensor drum。
The power was added to allow photocopying to take place and it was observed that the original scanned exposure light was not on. The power source plug-in, j17, was removed from the off-line to block the electrical resistance between the feet of j171 and 2, using table rx1, which is about one time. (b) switching to j17, which determines that the dc controller is poor, by turning on the power and measuring approximately 0. 3v during the advance of the original table, by connecting to j17, the secondary j2024 foot on the form ac 6v against the com tablex pen to the three feet on j302. After careful examination, the dc controller was found to have been damaged。
Treatment:
Replaced with the same type of dc controller post-testing, malfunctioning。
The complete black failure of photocopying of the npa2z photocopying machine:
Whether the original table contains white paper or images, the photocopy is all black and without any characters。
Analysis and overhaul:
The reasons for the total blackness of photocopies are mainly: 1) the exposure light is not on; 2) the electrons are poor; 3) anomalous operation of the optical system; 4) damage to or deterioration of the sensor drum。
The power was added to allow photocopying to take place and it was observed that the original scanned exposure light was not on. The power supply plug-in j17 for the exposure light was removed from the off-line and the electrical resistance between the feet of j171 and 2 was stopped approximately once using table rx1. (b) switching to j17, which determines that the dc controller is poor, by turning on the power and measuring approximately 0. 3v during the advance of the original table, by connecting to j17, the secondary j2024 foot on the form ac 6v against the com tablex pen to the three feet on j302. After careful examination, the dc controller was found to have been damaged。
Treatment:
Replaced with the same type of dc controller post-testing, malfunctioning。
With so many methods, the editor hopes to help you solve the problem of photocopying machines more quickly. The status of photocopying machines is getting higher in our society, which is no longer relevant, and his technology is constantly being updated, perfected and the writer dares to say how busy it is and how important it is that it cannot always be kept well. Now that the photocopying machine has helped you so much, it must be used in harmony。
