Motic SMZ-171 BL, Инструкция по эксплуатации

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3.4.3 For transmitted light, turn the microscope over so that the bottom plate of the stand faces
towards the user. Remove the bottom plate with the supplied Allen key, unplug the lamp
collector piece, remove the old LED circuit board from the socket and carefully plug in the new
LED circuit board. Finally, firmly secure the bottom plate after changing the old one.
3.4.4 Never touch the glass surface of the light bulb with bare hands. Any grease on the light bulb will
affect heat dissipation, greatly shortening the life span of the light bulb. If the surface of the bulb
has been accidentally touched, clean with alcohol and tissue.