User Guide
Image moves while 
adjusting focus 
Slide is shifting on the 
stage 
Reposition slide more 
securely in the clips 
Light is too dim 
Disc diaphragm hole 
selection is too small 
Rotate the disc diaphragm 
to a larger hole 
Lamp setting is too low 
Increase intensity on the 
control knob 
Voltage is too low 
Use the supplied power 
adapter 
Objective lens collides with 
the slide when switching 
from a lower to a higher 
power objective 
Slide is upside down or too 
thick 
Use a lab-quality slide or 
flip the slide over so the 
cover slip is facing up 
Stage is set too close to 
the objectives 
Lower the stage with the 
coarse focus knob 
Safety rack stop needs 
adjustment 
Adjust the safety rack stop 
to stop the stage farther 
from the objectives 
Image won't come into 
focus when using a 
high-powered objective 
Slide is upside down 
Flip the slide over so the 
cover slip is facing up 
Lamp does not turn on 
No power source 
Check that the adapter is 
fully connected or that 
batteries are installed 
Bulb has burned out 
Replace the bulb 
Lamp flickers while on 
Bulb is not inserted into the 
socket correctly 
Check to make sure the 
bulb is fully screwed into 
the socket 
Power adapter is not fully 
plugged in 
Check to make sure that 
the adapter is fully 
connected to wall socket 
and to the microscope 
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