possible reason elimination method The light bulb does not turn on when the power switch is turned on No bulb installed Install the bulb The plug is not well connected Recheck connection The main power switch is not turned on Turn the main power switch to "I" The bulb is broken Replace the bulb The fuse tube is broken Replace the fuse tube The lamp flickers or the brightness is unstable The lamp foot is not plugged in Reinsert The bulb is almost broken Replace the bulb The light bulb is bright, but the field of view is dim Bulb specifications do not match Worse bulb The lamp brightness is adjusted too low Adjust the brightness adjustment knob to increase the brightness Objective lens is not correctly placed in the optical path Put the objective lens in place The condenser aperture diaphragm is too small Widen the aperture diaphragm There are stolen objects on the surface of the lens (objective lens, eyepiece, condenser, and condenser) Wipe clean Condenser position is too low Properly raise the condenser The center of the condenser is off Adjust the center of the condenser Polarizer and polarizer are in the optical path Remove the analyzer and polarizer Blurred field of view or uneven illumination The height of the condenser does not match the objective Adjust the height of the condenser Field diaphragm center deviation Center field diaphragm The aperture stop size does not match the objective lens Adjust the aperture stop size Objective converter is not installed in place Install the converter in place The color filter is not installed properly Install the color filter in place The image is not clear l Poor contrast l Insufficient resolution l The image is not clear The sample coverslip is not standard (only for transmission observation) Use coverslips of standard thickness (0.17mm) The sample is installed upside down (only for transmission observation) Place the specimen correctly Objective lens surface is dirty Wipe clean Oil immersion objective 100X without oil immersion Use oil immersion There are bubbles in the oil Move the immersion objective back and forth several times Not using the infinity objective lens provided by Aopu Use the infinity objective lens provided by Aopu Inappropriate aperture diaphragm size Adjust to the right size Condenser position is too low Reposition The image moves when the image is dark on one side or when the focus is adjusted Objective lens is not correctly placed in the optical path Put the objective lens in place The sample is not installed The platform should be flat and pressed with a film clamp See smudges or dust in the field of view Smudges or dust on the sample Wipe clean Dirt or dust on the front lens of the condenser Dirt or dust on the eyepiece, objective, condenser, and condenser Dazzling imaging The field diaphragm is too wide Turn down the field diaphragm Specimens encountered when the objective lens changed from low magnification to high magnification Sample loaded upside down (transmitted light observation) Reverse the specimen Binocular and binocular images do not coincide Binocular pupil distance is not adjusted Adjust pupil distance to match eyes Incorrect diopter adjustment Adjust the diopter The left and right eyepieces are not the same Replace with two identical eyepieces The coarse and fine adjustment of the focus handwheel is very laborious The torque adjustment ring is too tight Loose coarse adjustment ring The limit device is locked Readjust the limit device Stage slip The coarse and fine adjustment ring is too loose Tightening coarse adjustment ring The coarse focus handwheel cannot raise the stage to a certain height The limit device is locked Readjust the limit device Eyes are easily fatigued during observation Binocular pupil distance is not adjusted Adjust pupil distance to match eyes Incorrect diopter adjustment Adjust the diopter Inappropriate brightness Adjust brightness Convenient folding for long battery life. fold Jiangsu Anywhere Mobility LTD. , https://www.annelectricscooter.com
Common faults and solutions of optical microscope>