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Magnus Theia fi Instructions Manual
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Magnus Theia fi Instructions Manual

Biological microscope
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BIOLOGICAL MICROSCOPE
*
This instruction manual is for the Magnus Biological Microscope Model
to ensure the
safety,obtain optimum performance, and familiarize yourself fully with the use of this microscope,
we recommend you study this manual thoroughly before operating the microscope. Retain this
instruction manual in an easily accessible place near the work desk for future reference.
*Theia fi is also known as MLX Plus in certain regions

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Summary of Contents for Magnus Theia fi

  • Page 1 Retain this instruction manual in an easily accessible place near the work desk for future reference. *Theia fi is also known as MLX Plus in certain regions...

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS (Figs. 1 & 2) 1. Before replacing the lamp bulb, be sure to set the main switch to (OFF), unplug the power cord from the Be sure to read and power outlet and wait until the lamp and its observe the caution surroundings have cooled down fully.
  • Page 3 3. Place the microscope on a flat, level surface which does not block the ventilation opening on the bottom. Do not place the microscope on a soft surface into which it may sink, for this will block the ventilation IMPORTANT opening on the bottom and may lead to a fire hazard.
  • Page 4 Be sure to observe the indications. Warning indication position Inside of the base (Warning against high temperature) If the warning label is stained or peeled off, please contact your local Magnus repre- sentative for replacement or other inquiry.
  • Page 5 1. A microscope is a precision instrument. Handle it carefully, taking care not to hit it against an object. Do not disassemble the microscope or drop its lens on the floor, for this makes accurate observation impossible. 2. Avoid using the microscope in places where there is direct sunlight, high temperature, high humidity, dust or vibration.
  • Page 6 Since solvents such as ether, alcohol are highly flammable, they must be handled carefully. Be sure to keep these chemicals away from open flames or potential sources of electrical sparks - for example, electrical equipment that is being switched off. Also remember to always use these chemicals only in a well-ventilated room.
  • Page 7 To carry the microscope, hold around the arm with hand as shown in Fig. 4 and carry carefully. Do not hold the microscope by the stage ‚ or observation tube . Also be careful not to drop the eyepiece and specimen .(Fig.5) If the microscope is used in a way not specified by this Fig.

  • Page 8: Table Of Contents

    COMPONENT UNITS SPECIFICATIONS FUNCTION OF EACH PART TROUBLESHOOTING GUIDE ASSEMBLY OBSERVATION FLOW OPERATION PROCEDURE Turning the Lamp ON......10 Placing Specimen on the Stage..10 Focusing........... 12 Adjusting the Interpupillar Distance. 13 Adjusting the Diopter......14 Adjusting the Condenser Position and Iris Diaphragm......
  • Page 9 Eyepiece lenses Observation tube Observe specimens by looking through the eye- ( A 4 5 d e g r e e t u b e , p i e c e l e n s e s w h i c h trinocular tube or binocular magnify the image formed tube is provided, depending...
  • Page 10 The description on this page uses the binocular tube composition using the Theia-Fi, as an example. Interpupillar distance scale Interpupillar distance ad- justment seat Specimen Diopter adjustment ring Rotate to compensate for observer’s eyesight. Cover glass Specimen holder The specimen glass plate is fixed here.
  • Page 11 Overall Assembly Diagram Refer to following pages for the detailed assembly diagram of each unit. The following figure shows the outline of assembly and the order of assembly steps. Built-in Illumination base Option (1) 6V20W halogen light source coupled with an efficient aspheric lens system & koehler (Optional) to provide optimum brightness along the optical path, Option (2) LED (LED light source high brightness, longlife (30,000hrs) Option (3) LED with battery back-up (LED light source high brightness, longlife (30,000hrs) with battery back-up in-built NiMH rechargeable...
  • Page 12 Power Cord Socket...
  • Page 13 Switch off the power supply and unplug the power cord. Slide the Light case (which is Front open) for easy bulb change . See page (1) Power Cord Switch Socket...
  • Page 14 1. Remove the eyepiece cap . (Fig.10) 2. Insert the eyepiece lens‚ into the observation tube. (Fig. 10) 3. When the observation tube is binocular, attach the other eyepiece lens in the same way as above. Do not tilt the microscope while eyepiece lenses are attached.
  • Page 15 Attach each objective‚ to each lens mount hole of the revolving nosepiece, starting from the lowest- magnification objective and increasing the magnifi- cation in the clockwise direction seen from the bot- tom. Lower By attaching objectives in this way, the objectives Magnification can be switched in ascending order of magnification.
  • Page 16 Connect the power cord correctly and make sure that the earth terminal of the power supply and that of the wall outlet are properly connected. If the equip- ment is not earthed, Magnus can no longer warrant the electrical safety and performance of the equip-ment. Fig. 14...

  • Page 17: Turning The Lamp On

    Turning the Lamp ON Page 10 Placing Specimen on the Stage Page 10 Engaging the 10X Objective in the Light Path Page 12 Once you have under stood the detailed op- eration procedur e on Focusing Page 12 the following pages, you will be able to operate the microscope simply Adjusting the Condenser Position...
  • Page 18 Repeated ON and OFF of the main switch may cause malfunction. 1. Set the main switch to “O” (ON). 2. Adjust the brightness by rotating the brightness adjustment knob . Rotating the knob in the direction of the arrow increases brightness and rotating it in the opposite direction decreases brightness.
  • Page 19 3. Rotating the upper knob which is the vertical feed knob moves the specimen glass plate in the front- rear direction; rotating the lower knob which is the horizontal feed knob …moves it in the lateral direc- tion. While watching the specimen move the speci- men, to the desired position.

  • Page 20: Focus Adjustment Knob

    1. Rotate the revolving nosepiece so that the 10X objective comes above the specimen. Here, we use the 10X objective because it makes focusing easiest. 2. While looking at the microscope from the side, rotate the coarse focus adjustment knob to approach the specimen until it is as close as possible to the objective.
  • Page 21 The interpupillar distance adjustment consists of regulating the distance between your eyes so that they can observe a single microscopic image. This greatly helps to reduce fatigue during observation. 1. While looking through the eyepiece lenses, adjust the interpupillar distance by sliding the interpupillar distance adjustment seat left and right.
  • Page 22 The diopter adjustment consists of compensating for observer’s left and right eye vision. 1. Look into the right eyepiece lens with your right eye and focus the specimen by rotating the coarse focus adjustment knob and/or fine focus adjustment knob. 2.
  • Page 23 2. Remove the eyepiece lenses from the observation tube, look into it and rotate the condenser iris dia- phragm Lever ‚. A good image may be obtained by adjusting the iris diaphragm to about 80% as shown in Fig. 22. This adjustment is required every time after the objective is changed.
  • Page 24 ease of control, the rotation tension of the coarse focus adjustment knob is adjustable. 1. While holding the coarse focus adjustment knob rotate the coarse focus adjustment knob tension adjustment ring ‚. Rotating the adjustment ring in the direction of the arrow increases the tension of rotation, and rotating the ring in the opposite direc- tion decreases the tension.
  • Page 25 1. Illumination system Halogen bulb 6V/20W Option for LED light source high brightness, long life (30,000 hrs.) (with or without battery back-up). 2. Power Supply 110V to 220V / 50 Hz 2. Focusing mechanism Coaxial coarse/fine focus adjustment knobs based on up- down stage movement.
  • Page 26 5. Stage Type With mechanical stage Size 125 (W) x 145 (L) Movement 76 (H) x 50 (V) range Scale Vertical-horizontal feed scale/indicators V scale: 0-50 mm H scale: 100-170 mm Minimum readout: 1mm on main scale Specimen Specimen holder lever fixation 6.
  • Page 27 7. Eye Piece Magnification ± 5 % Field No. 18 ± 5 % 8. Dimensions & weight 355 (L) x 222 (W) x 402 (H) mm. (With a binocular observation Approx. = 5.420 kgs. tube and mechanical stage)
  • Page 28 If a problem occurs, please review the following list and take remedial action as needed. If you cannot solve the problem after checking the entire list, please contact your area Magnus representative for assistance. 1. Uneven brightness in...
  • Page 29 3. Glaring Observation The condenser is too low. Move it up. image The condenser iris Increase the aperture to diaphragm dial is set too about 80% 14&15 narrow. 4. The observed image is Objective is not engaged in Engage the objective in po- whitish-blurred or the light path.
  • Page 30 6. High-magnification objec- Specimen is upside down. Set the specimen correctly tive touches specimen with the cover glass on the 10&11 just before coming into top. focus. 7. The tension of coarse fo- Coarse focus adjustment Loosen the ring to adjust to cus adjustment knob is Knob tension adjustment proper tension...
  • Page 31 11. Objective hits the speci- The specimen is upside Set the specimen correctly men when an objective down. with the cover glass on the 10&11 is switched to a higher top. magnification objective. The cover glass is too thick. Use cover glass with thick- ness of 0.17 mm.
  • Page 32 An immersion oil objective cannot exhibit its perfomance unless immersion oil is applied to the tip of the objective. 1. Attach the objective (100X oil) to the revolving nosepiece (refer to “4 Attaching the Objec- tives” on page 7). 2. Use a high-magnification objective other than the 100X objective and focus the specimen.
  • Page 33 4. Engage the Magnus 100X Objective in the light path by rotating the revolving nosepiece and focusing the specimen with the fine focus adjustment knob. The image view is poor if bubbles are mixed into the oil, so be careful not to mix bubble in the oil.
  • Page 34 NOTES...
  • Page 35 NOTES...
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