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Some problems will happen in the using of the microscope, you could solve them according the following 

list 

PROBLEMS   

REASON FOR PROBLEM 

SOLUTION   

I

Optical Part:   

The poor contact exists in the lamp 
house and the illumination system. 

Ensure the contact pin and the lamp 

holder pin work well 

The lamp bulb spoils 

change a new bulb 

The brightness adjustment knob is 

set too dark   

Adjust the knob in a proper position 

1

 Illumination is 

opening, but the field 

of view is dark. 

No use the appointed lamp bulb 

use the specified halogen Lamp 
6V30W 

The nosepiece is not in the located 

position   

Adjust it into the located position 

The  surface  of  the  lamp  become 
black 

Change a new lamp bulb 

2

 The edge of the field 

of view has shadow 

or the brightness is 

asymmetry 

The surface of the lens is moldy or 
has contaminant   

Clean the lens 

There are stains on the specimen 

Change the specimen 

3

 Find dust and stain in 

the field of view 

There are stains on the eyepiece 

Clean the eyepiece 

 
 
 

 

 

The objective damage 

Mend and correct the objective (send 

to factory for overhauling) 

 

The lens of the objective and 
eyepiece is moldy or have 
contaminant 

Do cleaning 

The opening of Aperture diaphragm 
and field diaphragm is not proper, 
and too much astigmatism. 

Change the opening of the aperture 

diaphragm and field diaphragm 

Fine focus system is broken 

Examine and repair the fine focus 

system(send to factory for 

overhauling) 

 

4

 The image is 

defocus\low-resolutio

n     

The objective is not in the center of 

the light path 

Turn the nosepiece to the located 

position 

The illumination light incline serious 

Adjust  the  filament  position  ,let  the 
light  distributing  of  the  field  of  view 
become symmetrical and bright   

5

 The image focus 

surface incline(one 

side is clear and the 

other side is faint) 

The specimen don’t correctly place    Put the specimen on the right position 

Содержание BM-800

Страница 1: ...This manual is written for lab biological microscope BM 800 For safety exerting best performance of the instrument and making you familiar with the instrument entirely we strongly recommended that yo...

Страница 2: ...Contents BM 800 Use Notices 1 Name of Components 1 2 Installation 2 2 1 Installation Diagram 2 2 2 Installation Steps 3 3 Adjustment 7 4 Operation 9 5 Technical Specifications 13 6 Trouble Shooting 14...

Страница 3: ...tage or it will bring a serious damage to the instrument 9 Use the factory supplied power cord please II Maintenance 1 All the lenses have been well checked and adjusted It is forbidden to disassemble...

Страница 4: ...1 Name of Components BM 800 Nosepiece Trinoclular Viewing Unit Objective Mechanical Stage Lamp House Video Port optional Eyepiece Ocular Microscope Body...

Страница 5: ...nstallation sequence of the components The number in the figure show the installation steps Before installing be sure every components is clean do not score any parts or glass surface Keep well with t...

Страница 6: ...Microscope Body Lamp House Mechanical Stage Support Device 10 Wide Field Eyepiece Infinite Plan Objective Trinocular Viewing Unit Video Port optional...

Страница 7: ...2 2 2 Installation Steps BM 800 Guide Board 3 1 Locking Block and Bolt...

Страница 8: ...l stage support device figure 2 place it from the top of the guide board figure 1 let the device figure2 falling free until it reach the limit position Use the hexagon wrench screw down the locking bl...

Страница 9: ...amp holder 2 Replacing Lamp when using or soon after When using or soon after it is turned off the lamp the lamp house and nearby parts will be very hot and will cause serious burns Please turn the ma...

Страница 10: ...epiece from the left or the right side figure 9 then push the nosepiece clockwise then place other objectives by the sequence of low to high magnification figure 10 Installing objective this way will...

Страница 11: ...into the eyepiece tube until they are against each other The result is showing in the figure 14 2 2 7Installing the Video Port optional Insert the video port figure 12 into the trinocular unit figure...

Страница 12: ...3 Adjustment BM 800 Diopter Ring Left Fine Focus Knob Left Coarse Focus Knob Clocking Set Condenser Focus Knob Video Port optional...

Страница 13: ...o Port optional Interpupillar Distance Indicator Right Fine Focus Knob Tension Adjustment Collar Right Coarse Focus Knob Brightness Adjustment Knob Main Switch Field Diaphragm Swing out Condenser with...

Страница 14: ...irection the voltage decline and the brightness weaken Using the lamp in a low voltage condition will prolong the use life 4 3 Adjust the Tension Adjustment Collar figure 17 The tightness of the tensi...

Страница 15: ...ng the objective touch the specimen 4 5 Adjusting the Interpupillar Distance Figure 19 The interpupillar distance range 48mm 75mm When observing with two eyes hold on the left and right prism holder t...

Страница 16: ...estroying the specimen 2 When using the video set Pull out the light path selector lever see figure25 observe with both eyes when the image is sharp you can see the pictures directly on the video scre...

Страница 17: ...ture Diaphragm The aperture diaphragm is designed for the adjustment of the numerical aperture not for the brightness Generally reducing the diaphragm opening to 70 80 of the N A value of the respecti...

Страница 18: ...he observed image of the field of view is sharp then open the field diaphragm let the image full of the field of view reduce the mixed light improving the quality of the image 4 10 Switching the Light...

Страница 19: ...n lamp 6V30W Condenser Swing out condenser NA0 9 0 25 Configuration Table Viewing Head Compensation Free Trinocular Head Eyepiece Extra Wide Field Eyepiece Infinite plan objective 4 10 40 100 Objectiv...

Страница 20: ...lens There are stains on the specimen Change the specimen 3 Find dust and stain in the field of view There are stains on the eyepiece Clean the eyepiece The objective damage Mend and correct the objec...

Страница 21: ...he tension adjustment collar is too tight Loose properly 2 The image can t stay on the focal plane in the process of the observation The tension adjustment collar is too loose Tighten properly III Ele...

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