Symptoms: I once had an ECRM1545 laser image-setter in our factory. I sometimes run the film after the boot machine has booted. Sometimes the film still does not stop at the same time, but occasionally it is normal.
Failure analysis; fault phenomenon is not fixed, with a certain degree of randomness, after analysis and will contact the ECRM service center. The initial judgment is the failure of the imager board. However, after the exchange of the main board of the imager with another main board of the same type of imagesetter. It was found that the fault persisted while the other imager was normal. So the motherboard should have no problem. According to further analysis, if the electronic circuit components are damaged, the imagesetter should not work properly. Random faults should not occur, and therefore may be due to mechanical failure or sensor failure.
Check: After the imagesetter is switched on, it is found that the transmission section of the imagesetter works normally and the voltage of each sensor is normal after power-on. This indicates that the mechanical transmission section and the sensor are not faulty. When checking the control panel, it is found that if the reset button is pressed down, the imagesetter is found. Stop the film and no longer cut the film. However, if a photo-taking machine fails to stop the film while cutting the film, the preliminary determination may be that there is a problem in the control panel, and check the connection between the control panel and the image-setter. Everything is normal, so further judgement may be that there is a problem with the control panel itself. It may be that a touch of a key on the panel causes the panel to always send a signal of a cut piece, and thus the imagesetter constantly moves and cuts a piece.
Maintenance; turn off the power, remove the imagesetter control panel, found that the control panel is a layer of light touch buttons stuck to a piece of film, from the external point of view, the control panel in addition to many years of use and make the panel a little worn outside. The other parts are in good condition. It is estimated that the panel may be in poor contact with the touch keys after many years of use, resulting in good or bad control signals. As a result, the imagesetter sometimes malfunctions and everything is normal. Remove the removed control panel gently from the film. Use alcohol to wipe off the original part without glue. Do not touch the button with poor touch. After the alcohol has evaporated. Reattach the control panel to the film. Then the control panel is restored to its original state, the power is turned on, and the imagesetter returns to normal. After many days of use, the imagesetter is normal.
Analysis of the causes of failures; From the point of view of failure phenomena, at first glance it was thought to be a circuit problem. Actually, after many years of use, the imagesetter has been pressed by thousands of times, resulting in poor button contact. Always on, causing the control panel to send patch signals to the imagesetter. Control photosetters keep cutting pieces. If the control panel is disconnected, the gap between the control panel and the lower control part is increased, the failure of the button contact is eliminated, and the imagesetter returns to normal.
Failure analysis; fault phenomenon is not fixed, with a certain degree of randomness, after analysis and will contact the ECRM service center. The initial judgment is the failure of the imager board. However, after the exchange of the main board of the imager with another main board of the same type of imagesetter. It was found that the fault persisted while the other imager was normal. So the motherboard should have no problem. According to further analysis, if the electronic circuit components are damaged, the imagesetter should not work properly. Random faults should not occur, and therefore may be due to mechanical failure or sensor failure.
Check: After the imagesetter is switched on, it is found that the transmission section of the imagesetter works normally and the voltage of each sensor is normal after power-on. This indicates that the mechanical transmission section and the sensor are not faulty. When checking the control panel, it is found that if the reset button is pressed down, the imagesetter is found. Stop the film and no longer cut the film. However, if a photo-taking machine fails to stop the film while cutting the film, the preliminary determination may be that there is a problem in the control panel, and check the connection between the control panel and the image-setter. Everything is normal, so further judgement may be that there is a problem with the control panel itself. It may be that a touch of a key on the panel causes the panel to always send a signal of a cut piece, and thus the imagesetter constantly moves and cuts a piece.
Maintenance; turn off the power, remove the imagesetter control panel, found that the control panel is a layer of light touch buttons stuck to a piece of film, from the external point of view, the control panel in addition to many years of use and make the panel a little worn outside. The other parts are in good condition. It is estimated that the panel may be in poor contact with the touch keys after many years of use, resulting in good or bad control signals. As a result, the imagesetter sometimes malfunctions and everything is normal. Remove the removed control panel gently from the film. Use alcohol to wipe off the original part without glue. Do not touch the button with poor touch. After the alcohol has evaporated. Reattach the control panel to the film. Then the control panel is restored to its original state, the power is turned on, and the imagesetter returns to normal. After many days of use, the imagesetter is normal.
Analysis of the causes of failures; From the point of view of failure phenomena, at first glance it was thought to be a circuit problem. Actually, after many years of use, the imagesetter has been pressed by thousands of times, resulting in poor button contact. Always on, causing the control panel to send patch signals to the imagesetter. Control photosetters keep cutting pieces. If the control panel is disconnected, the gap between the control panel and the lower control part is increased, the failure of the button contact is eliminated, and the imagesetter returns to normal.
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