text: **Model AY11230**
  
  1. Remove components from package. 
   identify all parts before assembling. 
  2. Tighten the knob on the stand to 
   prevent the elevator from sliding 
   down. 
  3. Fix the binocular body on the stand 
   with the tightening screw. 
  4. Check the input voltage to ensure that 
   it conforms to the microscopes 
   requirement. 
  
  1. Depending on microscope use, select 
   oblique or transmitted illumination. 
  2. The Brightness Adjustment Knobs 
   change the oblique or transmitted light 
   independently. The transmitted 
   illuminator fluorescent lamp cannot be 
   adjusted. 
  3. The angle of the oblique lamp can be 
   adjusted to ensure optimum lighting of 
   the sample. 
  
  1. Depending on microscope use, select 
   oblique or transmitted illumination. 
  2. The Brightness Adjustment knobs 
   change the oblique or transmitted 
   light independently. The transmitted 
   illuminator fluorescent lamp cannot 
   be adjusted. 
  3. The angle of the oblique lamp can be 
   adjusted to ensure optimum lighting 
   of the sample. 
  
  **CHANGING THE INTERPUPILLARY**
  **DISTANCE**
  1. The distance between the observer's 
   pupils is the interpupillary distance. 
  2. To adjust the interpupillary distance 
   rotate the prism caps until both eyes 
   coincide with the image in the 
   eyepiece. 