BestScope BS-4000A User manual

Industry Inspection Microscope
Model Number
BS-4000A/B
Instruction Manual
This manual is written for Industry Inspecting Microscope of BS-4000A/B. For safety and for exerting the best
performance, making you familiar with the instrument entirely, it is strongly recommended that you read this
manual carefully before using the microscope.

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Contents BS-4000A/B
User Notices
3
1
Name of Components
4
2
Installation
5
2-1 Installing steps
5
3
Adjustment & Operation
10
3-1 Adjustment Set Diagram
10
3-2 Operation
11
3-3 Microscope Video
15
3-4 Microscope Photography
16
4
Technical Specifications
17
5
Trouble Shooting
18

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Use Notices BS-4000A/B
I. Safety note
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, dusty and easy shaking
environment. Make sure the stage is smooth, horizontal and firm enough.
3. When moving the instrument, grip two sides of the bottom of the microscope with your two hands.
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 replace 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.(Designated bulb: 6V/20W Halogen Lamp)
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.
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 compact and precise frame, please don’t disassemble
them as possible 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 ether. (Note that the alcohol and the
ether are all burned easily, do not let them near the fire, and use them in a drafty room as possible as
you can.)
5. Don’t use organic solvent to wipe the non-optical elements, when you need to clean, use the soft
detergent, please.
6. When using, if the microscope is splash by liquid, cut off the power at once, and wipe up the moisture.
7. Do not disassemble any parts of the microscope. That will affect the function or decline the
performance of the microscope.
8. Place the instrument in a cool, dry position. After using the microscope, remember to cover it with dust
helmet. Do wait for the lamp house cooling completely before cover.
！Make sure that the input voltage is consistent with the power supply voltage, or it
will bring a serious damage to the instrument.

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1. Name of Components BS-4000A/B
Filter Board
Metallurgical
Illumination System
Eyepiece
Nosepiece
Body
Trinocular Viewing
Head (Fixed)
Stage
Objective

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2．Installation BS-4000A/B
2.1 Installing Steps
Fig.1
Fig.2
①
②
③
2.1.1 Installing the Stage (Fig.1-2)
1. Loosen the setscrew①.
2. Push the stage into the holddown groove
②and make the stage touch the retainer③.
3. Tighten the setscrew① until the stage is
installed firmly.
4. Place glass stage in the center of the
mechanical plain stage.
5. Fig.2 shows the station after Installing the
Stage.

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BS-4000A/B
2.1.2 Installing the Objective (Fig.3-4)
1. Adjust the coarse focus knob①, till the mechanical
stage to the low limited place.
For ensuring the safety of the instrument during
transportation, the nosepiece is located in the
lowest position and the tension adjustment
collar②is adjusted to an appropriate tension
while leaving the factory.
2. Remove the dust cap of the nosepiece.
3. Screw down the objective to nosepiece from left or
right side, low magnification objective first. Install
all the objective form low to high magnification
following the clock hand.
According to this way to install the objective will
make it easier to change magnification in
operation.
Clean the objective frequently.
At first, use the 10X objective to looking for image,
then change another one.
Turn the objective till hear the “Kai. Kai” sound,
make sure the objective enter the objective
center.
2.1.3 Installing the Eyepiece (Fig.5)
1. Remove the cap of the eyepiece tube.
2. Insert the eyepiece into eyepiece tube until they
are against each other.
Fig.3
①
②
Fig.4
Fig.5

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BS-4000A/B
Fig.9
Fig. 10
2.1.4 Mounting the video (photography) adapter
(Fig.6-8)
Insert the video (photography) adapter tube (Fig.6)
into the trinocular viewing head (Fig.7), and screw
down the bolt to fix it, as shown in Fig.8.
2.1.5 Mounting Filters and Polarizer (Fig.9-10)
Insert the filter into the corresponding jack, as shown
in Fig.10.
For polarization observation, insert the polarizer into
the right jack.
★Standard filters include blue, yellow and green filters.
Fig.6
Fig.7
Fig.8

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Fig.13
BS-4000A/B
Fig.12
Fig.14
①
②
⑥
⑦
①
Fig.11
2.1.6 Mounting Analyzer (Fig.11)
Insert the analyzer①into the jack under the
trinocular viewing head if necessary, as shown in
Fig.11.
★Analyzer can be used alone or matched with the
polarizer.
2.1.7 Connecting the Power Cord (Fig.12-14)
★Do not force on the Power Cord. The cable and wire
are easier to be damaged when bended or wrapped.
1. Before connecting the power cord, switch the main
On-Off ① to “O”(off).
2. Plug the power cord into the socket ②on microscope
safely. Make sure be connected.
3. Plug the power cord④ into the power source
socket⑤ safely. Make sure be connected.
★Do use the supplied power cord all the time. If lost
or damaged, select the same standard cord, please.
2.1.8 Replacing the fuse (Fig.12-13)
Do remember to turn the main switch① on the state
of “O” (off) before replacing the fuse, and unplug the
power cord. Rotate the fuse kits ⑥ out of the
holder⑦ by the “--”type screwdriver, replace a new
fuse, then rotate back to the holder again.

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BS-4000A/B
Fig.16
Fig.17
2.1.9 Installing and replacing the lamp (Fig.15-18)
★Please use the specified halogen Lamp 6V20W.
1. Pull out the lamp-house① as the picture show (Fig.15).
2. Hold to the bulb ①after you wrap it with gauze or
other protection materials, then depress the plugs
②fully into the jack ③ on the lamp house as the
picture show. (Fig.16)
3. Replacing the 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 main switch on
“O” (off), pull up power plug, and make sure the bulb,
the lamp house and periphery are all cool. Then, you
can do your replacing.
Please insert the lamp gently, or it will be damaged by
excessive extrusion.
Do not touch the Halogen bulb with your hands. It will
shorten the service life or cause it to burst. If you leave
fingerprints on the surface carelessly, clean it with a dry
soft cloth.
4. Align the socket① and pins ③and align the bolt②
and the jack④. Then push the lamp-house into the
Illumination Set until covered. (Fig.17-18)
Fig.15

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3. Adjustment & Operation BS-4000A/B
3.1 Adjustment Set Diagram (Fig.19)
-+
Coarse
Focus Knob
Fine
Focus Knob
Portrait Adjustment
Knob
Lateral Adjustment
Knob
Interpupillary
Distance
Diopter Ring
Light Switch
View field
Diaphragm
Aperture
Diaphragm
Gather Lens
Adjust Lever
Stage moving Knob
Fig.19