background image

IRB20 Inverted Microscope Bulb & Fuse Replacement

12

Fein 

TROUBLE

POSSIBLE CAUSE

SOLUTION

Coarse focusing knob 

is too tight.

Tension knob is too loose.

Tighten it a little.

Stage declines itself, 

cannot stay on the 

focal plane when 

observing.

Tension knob is too loose.

Tighten it a little.

Coarse focusing knob 

can’t rise.

The limit stop knob is locked.

Loosen the knob.

Coarse focusing knob 

can’t decline.

The base of the condenser is too low.

Raise the base.

Cannot move the 

slide smoothly.

The slide is not fixed correctly.

Adjust it 

The movable specimen holder is not fixed 

properly.

Adjust it

The image moves 

obviously when 

touching the stage.

The stage is fastened incorrectly.

Fasten the stage correctly.

The LED light does 

not work.

No power supply.

Check the connection of the 

power cable.

The LED bulb is not installed correctly.

Install it correctly.

The LED bulb is burnt out.

Replace it.

The bulb burns out 

frequently.

The wrong bulb is being used.

Replace it with the correct bulb.

The illumination is 

not bright enough.

The wrong bulb is being used. 

Replace it with the correct bulb.

The illumination adjustment is not set in a 

bright position.

Adjust the illumination knob to 

intensify the light.

Troubleshooting

Содержание RB20

Страница 1: ...Fein RB20 Biological Microscope User s Manual info feinoptic com ...

Страница 2: ...Fein Microscope Components Eyepieces Condenser Objective Lens 1 Coarse Adjustment Fine Adjustment Tension Adjustment Microscope Frame Carrying Handle Condenser Adjustment Knob ...

Страница 3: ...sepiece Mechanical Stage Fein Microscope Components 2 Lock Screw Fixed Koehler Illumination Focus Arm Trinocular Head Vertical Adjustment Knob Horizontal Adjustment Knob Power Switch Light Adjustment Knob ...

Страница 4: ...ack 1 and the frame at the front 2 as shown in the image at right Set the power switch to off O before replacing a bulb or fuse and wait until the lamp is cool The power switch is located on the side of the microscope Voltage range of 100 240V 47 63Hz is supported Turn the rheostat control knob 1 to the minimum and turn the power switch to the on I position Rotate the rheostat knob to increase or ...

Страница 5: ...4 Fein Microscope Assembly Follow the numbers below when assembling the microscope Eyepiece Condenser Objectives Power Cord 1 2 3 4 ...

Страница 6: ...til the condenser is aligned with the base and rotate the condenser to make the handle face forward Tighten the condenser lock screw 2 of condenser then raise the condenser with the up down knob to the highest position 2 Assemble the Objective Rotate the coarse focusing knob 1 to lower the state to the lowest position Then install the objectives into the nosepiece 2 from the lowest magnification t...

Страница 7: ...until the eyepiece is flush with the eyepiece tube Tighten the eyepiece with M2 5 inner hexagon lock screw 3 1 3 2 Assemble the Eyepiece Take off the eyepiece tube cover 1 Insert the eyepiece 2 into the eyepiece tube until the eyepiece is flush with the eyepiece tube Tighten the eyepiece with M2 5 inner hexagon lock screw 3 1 3 2 ...

Страница 8: ...owly move the specimen holder lever back into place This will secure the specimen slide Rotate the X and Y axis knobs 3 on the stage until the center of the specimen slide is aligned with the objective Adjust the Focus Rotate the condenser adjustment knob 1 raising it to the highest position Move the 4x objective into the optical path Looking through the eyepieces rotate the coarse focusing knob 2...

Страница 9: ...he eyepieces 2 to fit your personal interpupillary distance The scale between the eyepieces 1 notes the interpupillary distance setting It s a good idea to note this number when working in a setting where multiple people are using the same instrument This allows you to easily reset your interpupillary distance 1 Aperture Diaphragm The aperture diaphragm dictates the numerical aperture NA of the il...

Страница 10: ...er use wipe the lens with a tissue moistened with microscope cleaning solution Using Filters Filters can increase the contrast in microscopy images The filter sits on top of the light as shown at the right The RB20 accepts a 34mm diameter filter C Mount assembly Loosen the trinocular head set screw 1 and remove the trinocular port dust cap 2 Remove any dust cover caps from the c mount 3 Insert the...

Страница 11: ...he microscope is not in use the power cord can be placed in the storage box Press the position 1 of the storage box cover with thumb When you hear a click push up and put the power cord into the storage box Close the back cover by pressing down on the cover 1 ...

Страница 12: ...cover glass The cover glass is not standard Use a standard cover glass with thickness of 0 17mm The slide is upside down Adjust the slide The immersion oil has accumulated on the dry objective Clean the objective thoroughly The immersion oil is not being used for oil objective Use immersion oil Air bubble is in the immersion Get rid of the air bubbles The aperture diaphragm is not opened correctly...

Страница 13: ...ixed correctly Adjust it The movable specimen holder is not fixed properly Adjust it The image moves obviously when touching the stage The stage is fastened incorrectly Fasten the stage correctly The LED light does not work No power supply Check the connection of the power cable The LED bulb is not installed correctly Install it correctly The LED bulb is burnt out Replace it The bulb burns out fre...

Страница 14: ...arrying handle side is down Locate the 4 rubber feet on the underside of the microscope Remove the rubber feet exposing the 4 screws securing the bottom plate of the microscope Gently lay microscope on carrying handle Using an Allen wrench remove the 4 screws securing the bottom plate of the microscope With all 4 screws removed gently remove the bottom plate exposing the internal electrical compon...

Страница 15: ...ith all 4 screws removed carefully remove the bottom plate exposing the internal components of the microscope Locate the 2 screws securing the LED bulb in place Using a screw driver remove the 2 screws Locate the black wire connection Using your thumb and forefinger pinch the sides of the black wire plug connection and gently pull it from the wire housing ...

Страница 16: ...h the LED bulb replaced position the bottom of the microscope plate back onto the microscope frame Using a screw driver secure the bottom plate with the 4 set screws Place the 4 rubber feet over the top of the 4 set screws LED replacement bulb part RB20 001 Return the microscope to its upright position Plug the microscope back in power on and adjust the rheostat control as needed info feinoptic co...

Отзывы: