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故障7 复印品图像淡机型佳能NP-155检修方法1.首先调节曝光灯亮度(VR602)。2.检查转印电晕器,如果电晕丝太脏,太松或距感光鼓太远则需更换或调整电晕丝。检查高压发生器和高压输送线。3.检查转印导向板和供纸导向板1、2。用三用表的“KΩ”档测量供纸导向板与地之间电阻是否为0。如果是,则表明短路,需要更换其偏压电阻器。4.检查显影辊的着粉情况。若着粉不好,可先用干布将显影辊上的色粉擦净,然后再用不脱纤维的湿布把显影辊上的污垢擦净,待显影辊上的水份完全蒸发后再投入使用。这样就能使显影辊正常着粉。5.检查色粉传感器的同时检查色粉盒内的色粉是否因传感器失灵而严重缺粉,则应加粉和进一步检修色粉传感器。6.检查显影器的安装位置是否正确。7.检查高压发生器与其供电线路是否正常。若无高压输出,则需更换高压发生器,
Fault 7 Copy Product Image Light Model Canon NP-155 Maintenance Method 1. Adjust the exposure lamp brightness (VR602) first. 2. Check the transfer corona. If the corona wire is too dirty, too loose or too far away from the photoreceptor, replace or adjust the corona wire. Check high pressure generator and high pressure conveyor line. 3. Check the transfer guide and feed guide 1, 2. Measure the resistance between the paper feed guide and ground using the “KΩ ” gauge of the triple meter. If yes, it indicates a short circuit and needs to be replaced with a bias resistor. 4. Check the developer roller powder situation. If the powder is not good, you can first use a dry cloth to wipe the toner on the developing roller, and then with a non-fiberized damp cloth to clean the dirt on the developing roller until the water on the developing roller is completely evaporated before putting it use. This will make the developer roll properly. 5. While inspecting the toner sensor, check that the toner inside the toner cartridge is seriously lacking in powder due to malfunction of the sensor. You should add powder and inspect the toner sensor. 6. Check if the developer’s installation location is correct. 7. Check the high voltage generator and its power supply line is normal. If no high-pressure output, you need to replace the high voltage generator,