BestScope BS-2020BD(300) User manual

Digital Biological Microscope
Model Number: BS-2020BD(300)
User Manual
This manual is written for digital biological microscope BS-2020BD(300). To ensure the safety, obtain
optimum performance and to familiarize you fully with the use of this microscope, it is recommended
strongly that you study this manual thoroughly before using the microscope and retain this manual in an
easily accessible place near the work desk for future reference.

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CONTENT
TUUser NoticeUT ...........................................................................................2
TU1. ComponentsUT ......................................................................................4
TU2.AssemblyUT ...........................................................................................5
TU2.1 Assembly DiagramUT ....................................................................5
TU2.2 Assembly StepsUT .........................................................................6
TU3.Adjustment & OperationUT .................................................................10
TU3.1 Adjustment SetsUT .......................................................................10
TU3.2 OperationUT ...................................................................................0
TU4. Specification TableUT .........................................................................14
TU4.1 Main specificationsUT .................................................................14
TU4.2 Eyepieces and ObjectivesUT ........................................................14
TU4.3 Total MagnificationUT .................................................................15
TU5．OutfitUT ............................................................................................15
TU6．Troubleshooting GuideUT .................................................................16

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User Notice
For the software manual, please see the attached CD in the carton.
Ⅰ. Safety Notes
1. Carefully open the box, avoid the accessories, like lens, dropping to ground and being damaged.
2. Do keep the instrument out of direct sunlight, high temperature or humidity, dustyand easy
shaking environment. Make sure the stage is smooth, horizontal and firm enough.
3. When moving the instrument, please use two hands to grip with the two sides of the microscope
body.
4. When running, the lamp house and nearby parts will be very hot. Please ensure there is enough
cooling room for them.
5. Make sure the instrument is earthed, to avoid lighting strike.
6. For safety, be sure the main switch is in “O”(off) state before replacing the halogen lamp or the
fuse, then cut off the power, and do the operation after the lamp bulb and the lamp house
completely cool down.( Specified: Halogen Lamp 6V/20W or LED 3W)
7. Check the input voltage: be sure the input voltage which signed in the back of the microscope is
consistent with the power supply voltage, or it will bring a serious damage to the instrument.
8. Use the factory supplied power cord, please.
II. Maintenance
1. All the lenses have been well checked and adjusted. It is forbidden to disassemble them yourself.
2. The nosepiece and coarse/fine focus unit have a compact and precise frame; please don’t
disassemble them as possibly as you can.
3. Keep the instrument clean, wipe dust regularly, and be attention to avoid contaminating the
optical elements especially.
4. The contaminations on the prism, as finger mark and oil, could be gently wiped with a piece of
soft cloth or tissue paper, gauze which has been immersed in pure alcohol or aether. (Note that
the alcohol and ether are highly flammable, do keep them away from the fire or potential
sources of electrical sparks, and use them in a drafty room as possible as you can.)
5. Do not attempt to use organic solvents to clean the microscope components other than the glass
components. To clean them, use a lint-free, soft cloth slightly moistened with a diluted neutral
detergent.
6. When using, if the microscope is splashed by liquid, cut off the power at once, and wipe up the

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moisture.
7. Do not disassemble any parts of the microscope, which will affect the function or decline the
performance of the microscope.
8. Place the instrument in a cool, dry position. When not using the microscope, keep it covered
with a dust cover. Make sure the lamp socket is cool before covering the microscope.

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1. ComponentsTT
BS-2020BD(300) Digital Biological Microscope
Eyepieces Digital viewing head
Nosepiece
Objectives
Main body
Condenser
Collector

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2.Assembly
2.1 Assembly Diagram
The following figure shows the installation sequence of the components. The number in the figure
shows the assembly steps.
Before installing, be sure every components is clean, do not score any parts or glass surface.
Keep well with hexagon wrench provided. When replacing the components, you will need it
again.
③
Main bod
y
Objectives
Digital viewing head
E
y
e
p
ieces
④
①
②
Power cord
USB data wire
⑤

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2.2 Assembly Steps
2.2.1 Installing digital viewing head
（Fig.1、2）
Insert the digital viewing head into the
microscope head, turn into the right position,
then screw down the bolt①to fix it.
2.2.2 Installing the eyepieces（Fig.3、
Fig.4）
Insert the eyepieces into the eyepiece tube
until they are against each other as shown in
Fig.4.
NOTE:
Operation Conditions：
1．Temperature：0℃～40 ℃,Maximum
Relative Humidity：85%.
2．High Temperature：High Temperature
and humidity will result in a mildewing,
dew and even ruinous instrument.
3．Avoid placing the instrument in a dusty
environment. When ending your
microscope operation, please cover it with
the dust cap.
4．Lay the microscope in a plan and stable
position, please.
Fig.1
Fig.3
①
Fig.2
Fig.4

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②
①
Fig.6
Fig.5
2.2.3 Installing objectives (Fig.5& 6）
1. Adjusting the coarse focus knob until the
support device of the mechanical stage
reaches its low limit position.
2. Screw the lowest magnification objective
into the nosepiece from the left or the right
side, then revolve the nosepiece clockwise
and mount other objectives by the sequence
of low to high magnification
Installing objective this way will make the
change of magnification to be easier during
using.
Clean the objectives regularly, for lens is
susceptible to dust.
When operating, use 10×magnification
objective to search and focus specimen
firstly, then replace with higher
magnification objective if necessary.
When replacing the objective, slowly turn
the nosepiece until you hear “clicked”,
which means the objective is in the
required position—center of the light
path.
2.2.4 Installing the color filters (Fig.7)
1. Turn the condenser bracket①out at the
direction of arrow in Fig.7
2．Put the required filters②into the holder on
the bracket, and then turn the bracket back
to the right position.
★Baby blue and green filters are available in
standard outfit.
Fig.7

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③ ②
⑥
④ ⑤
2.2.5 Connecting the power cord
(Fig.8, 9,10)
★The cable and cords are vulnerable
when bent or twisted, never subject the
power cord to excessive force.
1. Turn the main switch①to “O” (off) state
before connecting the power cord.
2. Insert the power plugs②into the power jack
③of the microscope; make sure the
connection is well.
3. Plug the power cord ④into the power supply
receptacle safely. Make sure the connection is
well.
★Do use the supplied power cord all the
time. If it lost or damaged, select the same
standard cord, please.
★ Either 110V or 220V can be selected as
the input voltage of this microscope. (The
input voltage has been preset in the
microscope before leaving factory.
2.2.6 Replacing the Fuse（Fig.8、9、10）
Do remember to set the main switch①to
the state of “O” (OFF) and unplug the power
cord ②before replacing the fuse. Scratch the
fuse holder⑤out from the power socket③
on the microscope, replace with a new fuse in
the holder, then press the fuse holder back
again.
★There is a spare fuse in the fuse holder.
★For 220V input voltage，use fuse of rating
(250V500mA).
★For 110V input voltage, use fuse of rating
(250V1A).
Fig.8
①
Fig.9
Fig.10

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②
①
④
.
⑥
⑤
2.2.7 Installing and replacing the
lamp（Fig.11,12,13）
There are two types of illuminator
available for this microscope, one type is
halogen lamp 6V20W, the other is 3W
LED. During use or just after using, the lamp
house and nearby parts will be very hot.
Please set the main switch to “O” (off) state
before replacing, and make sure the bulb, the
lamp room and periphery are all cool enough
to carry no burn. Then, you can do your
replacing.
1. Loose the bolt①and open the window②
on the bottom of the microscope base
with “一”type screwdriver.
2. Pull out the old bulb③,hold the new
bulb after you wrap it with gauze or
other protection materials and insert its
pin as deeply as possible into the jack in
the lamp holder.
4. Close the window and tighten the bolt①.
Please insert the bulb gently, or it
will be damaged by excessive
extrusion.
Do not touch the halogen bulb with
bare hands. It will shorten the service
life or cause it to burst. If you leave
fingerprints on the surface carelessly,
clean it with a piece of dry soft cloth.
When replacing LED ：
1. Generally, the LED has long service life
and is not easy to damage, if
unfortunately it damaged, purchase a
new one from the supplier.
2. Remove the base plate ⑥from the
bottom side of the microscope base with
screw driver ,loose the bolt⑤to take the
old LED off, replace with a new one .
3. Put the new LED unit back onto the
bracket with the bolt⑤and the base
plate ⑥onto the bottom side of the
microscope.
When you take down the base plate,
please do it gently and slowly, to avoid
damaging internal electrical wires.
Fig.11
③
Fig.13
Fig.12