Olympus BX-2 Service manual

Maintenance Manual

for maintenance engineer

Thank you for purchasing the Olympus microscope BX2. In order to fully utilize its performance and secure optimum condition, please read this manual before maintenance work. Please also keep it at hand during maintenance as well as for future reference.

BX2

BX2 MAINTENANCE MANUAL

INTRODUCTION

The purpose of this manual is to satisfy any requirements for maintenance material that maybe considered as necessary to professionals in the maintenance field, such as Maintenance engineer in Hospitals. It is intended to be used as a tool for performing basic maintenance procedures if needed or when required as per the recommended maintenance schedule.

The sections from this manual only cover procedure pertaining maintenance ’s that are considered to be easily performed. For more involved maintenance ’s or repairs, it is recommended that you contact a qualified service engineer from your local Authorized Olympus dealer.

Maintenance parts, grease, and other items specified in the manual can be ordered from your Authorized Olympus dealer, and subject to change without notice.

The recommended maintenance schedule is shown below as reference. ( * Necessary item)

Portion Cleaning Optical/mechanical check Maintenance schedule

Optical components

1) Outer surface * Once in a year Eyepiece, objective, (If dirt is conspicuous or oil condenser lens, filter, immersion objective is used, photo eyepiece cleaning should be made after

every use.)

2) Inner part * Once in a year Prism, built-in filter, internal lenses, mirror

Appearance * Once in a year Microscope frame, mechanical (If dirt is conspicuous, cleaning part should be made after every use.)

Observation tube * Once in a year

Optical adjustment:

1) Optical axis (standard)

2) Left/right optical axis

3) Revolving axis

4) Parfocality

Mechanical part * Once in two to three years Focusing unit, stage, revolving Mechanical movement: nosepiece, aperture/field Grease replacement iris diaphragm Mechanical adjustment

BX2 MAINTENANCE MANUAL

1) Fundamental handling a. Read the instruction manual thoroughly, handle the microscope correctly. b. Be sure to make a usual cleaning, especially after every use of microscope. c. When handling the microscope, do not expose it to shock, moisture, heat and dust. d. If the problem occurs, do not treat it in self-judgement.

2) Using and storing conditions a.The microscope should be used under no vibration.

If it is placed in such environment as vibration, this causes disturbance and fatigue in observation and affects the photomicrography.

b. It should not be stored in high humidity.

Such condition causes fungus, corrosion on lens and rust on metal part. Therefore, special caution is exercised if stored in a long period of time. c. Intense temperature change should be avoided. Be careful not to place the microscope near window exposed to direct sunlight and air conditioner. When bringing it into warm room from cold storage location in winter, condensation occurs on lens and metal part, it causes fungus and rust.

d. It should be kept clean.

The microscope is required to keep away from dust that causes contamination, fungus on lens and failure of sliding part in the frame. Be careful not to place it in the environment where the corrodent chemicals such as hydrogen sulfide, hydrogen fluoride and acid are handled.

< Reference> fungus: occurrence conditions

Dry blue aspergillus

Temperature

Degree(C)

40

30

Humidity

%

60 70 80

- 1 -

Aspergillus

20

10

90

100

BX2 MAINTENANCE MANUAL MAINTENANCE PROCEDURE

2. Guide to maintenance

2-1 Overview of maintenance

1) 2) 3)

Set your correct interpupillary distance. Note any areas suggesting a need for mechanical and/or optical maintenance by operating it or observing a specimen.

OLYMPUS

BX51

12 11

10

9 8 6 4

P

PRE-SET

OLYMPUS

BX51

12 11 10 9 8 6 4 P

PRE-SET

Sweep off dust on the outer surfaces with the soft brush. If there are stains

Remove the revolving nosepiece, stage

and condenser. on the microscope frame, clean them with neutral detergent.

4) 5) 6)

OLYMPUS

BX51

12 11 10 9 8 6 4 P

PRE-SET

Plastic part

Wipe off any dirt spots on the surface. The plastic parts should be cleaned with neutral detergent.

7)

Polish all plastic components and the frame with silicon cloth.

Tool required:

OLYMPUS

PRE-SET

BX51

12

11

10 9 8 6 4 P

collector lens

Clean all exposed optics such as lenses of eyepieces and objectives. (Only the BX41collector lens should

Mount the removed components to

the microscope frame. be cleaned with neutral detergent

because it is made of plastic.)

8) 9)

Return the interpupillary distance to original condition and prepare for the inspection. (see page 6)

Do a final check following the inspection

sheet in this manual. (See page 7)

OLYMPUS

BX51

12 11 10 9 8 6 4 P

PRE-SET

OLYMPUS

BX51

12

11 10 9 8 6 4 P

PRE-SET

Lens tissue

Neutral detergent (For plastic part or frame)

Cleaning solution (For lens or filter etc.)

- 2 -

Cotton swab Blower Silicon cloth

or tweezers etc.

(For finishing)

BX2 MAINTENANCE MANUAL MAINTENANCE PROCEDURE

2-2 Cleaning method for the optical components

Required tools:

1) Lens tissue

2) Cotton swab or tweezers etc. 3) Blower 4)Magnifier (Eyepiece is possible to be used by turning it upside down. Refer to page 10.)

5) Cleaning solution: e.g. Alcohol

Before cleaning: Lightly brush the lens surface or blow with the blower before wiping with tissue. This removes particles that may scratch the lens surface. (to protect the lens coating)

HOW TO CLEAN THE OBJECTIVE LENS 1 2 3 4

Moisten the tip of cotton swab with cleaning solution.

With a circular motion, wipe the top lens surface with the cotton swab, to thoroughly remove any oil or dirt from the lens.

When the lens size is large and difference in level between the lens and the lens frame is small:

Fold the lens tissue several times and moisten it with cleaning solution. After that, apply the folded line edge to the center of lens, push it with index finger and turn the objective by the other hand to clean the lens while moving it from the center towards the periphery.

Put it on the desk

Dip a new cotton swab in the cleaning solution and shake vigorously to remove any excess cleaning solution.

wipe the objective lens from the center towards the periphery, while rotating the lens.

Cleaning the immersion objective:

Wipe off the immersion oil while absorbing it with lens tissue that is not moistened. After that, clean the lens as the same manner mentioned on the left. When the top surface of lens frame is higher than that of lens and remained dirty potion on the periphery of lens can not be wiped off, clean the lens referring the above figures, 1 to 4.

- 3 -

BX2 MAINTENANCE MANUAL MAINTENANCE PROCEDURE

HOW TO CLEAN THE FILTER

Fold the lens tissue into two or three layers and moisten its shaded part with cleaning solution.

Hold the filter at its edge and fold the lens paper from the lens center to outside as illustrated. Move the lens tissue gradually to outside while turning the filter by left hand.

HOW TO CLEAN THE PRISM

Hold a sheet of lens tissue between your middle and index fingers, then fold and wrap it around your index finger. Hold the tissue down with your thumb and moisten it with sufficient cleaning solution.

1)

2) 3)

4)

5)

6)

Wipe the prism surfaces from front to backward at a stroke, applying even pressure.

- 4 -

BX2 MAINTENANCE MANUAL MAINTENANCE PROCEDURE

HOW TO CLEAN THE EYEPIECE

1 2

Wrap a sheet of lens tissue around a cotton swab as illustrated. If the area to be cleaned is large, wrap the

Dip the wrapped lens tissue in the cleaning solution, and wipe the eyepiece from the center towards

the periphery in a circular motion. lens tissue looser and thicker. Otherwise, make a

thin, tight wrap.

.

Important notes:

1) Never rub the lens surface strongly.

2) Do not use the same lens tissue to clean more than one lens .

3) Do not moisten the lens tissue with an excessive amount of cleaning solution.

4) When cleaning with tweezers, be careful not to protrude its tip from the lens tissue.

- 5 -

BX2 MAINTENANCE MANUAL MAINTENANCE PROCEDURE

3. Preparing for inspection

ADJUSTMENT OF KOEHLER ILLUMINATION

1) Set the main switch “A” to “I” (ON) and adjust the brightness by turning the adjustment knob “B” .

2) Set the light path selector knob “C” to the pushed-in position.

(Pushed-in position: Binocular 100%, Middle position: Binocular 20% Photo/TV 80%, Pulled-out position: Photo/TV 100%)

3) Place a specimen on the stage.

4) Engage the 10X objective in the light path.

5) Turn the condenser height adjustment knob “D” to raise the condenser to its upper limit. ( When using the U-SC3 swing-out condenser, move the top lens into the light path.)

6) Looking through the eyepiece in the right sleeve without the diopter adjustment ring, turn the coarse and fine focus adjustment knobs to bring the specimen into focus.

7) Looking through the eyepiece in the left sleeve with the diopter adjustment ring, turn only the diopter adjustment ring “E” to focus on the specimen.

(At this time, adjust the interpupillary distance so that the binocular visions on the left and

right fields of view coincide completely.)

8) Turn the field iris diaphragm ring “F” in the direction of the arrow so that the iris diaphragm image

comes inside the field of view.

9) Manipulate the condenser height adjustment knob “D” to focus on the iris diaphragm image. (See Fig.1)

10) Turn the two condenser centering screws “G” to move the iris diaphragm image to the center of field of view. (See Fig. 2)

11) Gradually open the field iris diaphragm. The condenser is properly centered if the iris diaphragm

image is centered and inscribed in the field of view. (See Fig.3) (During actual use, open the field iris diaphragm slightly until its image circumscribes the field

of view. See Fig.4)

Reference: Since the contrast of microscope specimens is ordinary low, setting the condenser

aperture iris diaphragm to between 70% and 80% of the N.A. of the objective in use is usually recommended. If necessary, adjust the ratio by removing the eyepiece

and looking into the eyepiece sleeve while adjusting the aperture iris diaphragm ring “H”.

C

E

OL YMPUS

BX51

12 11 10

9

8

H

G

6 4

P

PRE-SET

D

F

B

A

Field iris diaphragm image

Fig.1

Fig.2

Fig.3

Fig.4

- 6 -

BX2 MAINTENANCE MANUAL MAINTENANCE PROCEDURE

4. BX2 inspection sheet

MODEL : CHECK DATE : S/N : CHECKING BY : CHECK POINT

CHECK CONTENTS

RESULT REF. PAGE

1. Electrical unit

1) When the power switch is turned on, the lamp is lit and the brightness can be varied by adjustment knob.

2) When the light preset switch is set ON, the previously set voltage can obtained regardless of brightness adjustment knob position.

3) The voltage of light preset switch can adjusted in a prescribed range.

2. Coarse/fine focus adjustment knob

1) The coarse/fine focus adjustment knob is smoothly moved without tightness or unevenness.

2) The tension of coarse focus adjustment knob can be adjusted by the adjustment ring.

3) The coarse upper limit lock is effective.

3. Stage

1) The stage is fixed by the clamping screw.

2) The stage can be rotated clockwise or

counterclockwise while holding the clamping screw after the screw is loosened.

3) The stage should not fall spontaneously.

4) A specimen is held securely by the specimen holder.

5) The X/Y movement is smooth without unevenness,

backlash or slipping.

4. Observation tube

1) The interpupillary distance adjustment can be

operated smoothly in working range.

2) When changing the interpupillary distance, the displacement of optical axis is not apparent.

3) The diopter adjustment ring is moved smoothly in working range.

4) The optical axis of left side coincides with that of right

side.

5) The light path selector knob is moved smoothly.

6)The tilting angle is easily adjusted and its angle

is stable. (U-TBI / U-ETBI only)

7) When changing the tilting angle, the optical axis displacement is not apparent. (U-TBI / U-ETBI only)

5. Revolving nosepiece

6. Condenser

1) The revolving nosepiece can be rotated smoothly

and stops at the click position.

1) The vertical movement of condenser is smooth.

2) The centering of field iris diaphragm can be adjusted in a movable range with the condenser centering knobs.

7. Illumination 1) The field/aperture iris diaphragm ring is moved normally.

8. Visibility (Observation)

1) Observation image is normal.

Without flares /ghosts / vignetting /uneven illumination

2) When photographed, there is no unevenness or shading on the film surface.

3) Dust and dirt are not noticeable in observation or

photomicrography.

Remarks:

OK / NO OK / NO

OK / NO OK / NO OK / NO OK / NO

OK / NO OK / NO

OK / NO OK / NO OK / NO

OK / NO OK / NO OK / NO OK / NO OK / NO

OK / NO OK / NO OK / NO OK / NO

OK / NO OK / NO

OK / NO OK / NO OK / NO

18, 19, 20

17

14, 15, 16

11, 12, 13

8, 9

- 7 -

BX2 MAINTENANCE MANUAL INSPECTION PROCEDURE

Chapter 2.

INSPECTION PROCEDURE

1. Checking performance of microscope Using the BX2 maintenance sheet (P.7), check the electrical unit, mechanical and

optical performance.

2. Checking dirty portion

2-1 Image influence caused by dirt on each component The following figure shows the influence of image on each optical component if stains or dust is adhered to that portion. In general, the microscope image or photographing is largely affected by dirt adhered on the nearer portion to a specimen and image surfaces. Therefore, the optical components should be kept clean and dust-free.

B

Photo eyepiece

C

Prism

B

Eyepiece

D

objective

A

Specimen

12

B

Condenser lens

C

Collector lens

C

Filter

C

Built-in filters

•E 11

•E 10

9 8 6 4 p

A: Dirt is clearly seen. B: Blurred contours of dirt is seen. C: Dirt is seen when the aperture iris diaphragm is stopped down. D: Dirt is not directly seen, but contrast of image deteriorates.

- 8 -

BX2 MAINTENANCE MANUAL INSPECTION PROCEDURE

2-2 How to find dirty portion through observation

1) Stop down the aperture iris diaphragm. (When the aperture iris diaphragm is stopped down, it facilitates finding the dirt particles because the depth of focus increases and the dirt position bring into focus. However, very small dirt particle may not be found in this method.)

2) Observe a specimen through the eyepiece.

If dirt is seen by observing it, look for the portion where stains or dust is adhered by moving the following components as well as a specimen. For TV camera, check it by method shown below.

OLYMPUS

Photo eyepiece

Check it by rotating the photo eyepiece. (The dust particles will be focused on the film plane.)

NFK5XLD

125

TV camera

Dust particles appearing on the monitor screen: if the particles move only when the specimen or condenser is moved, clean the specimen and/or condenser. If they do not moved when the TV camera is rotated, clean the camera tip.

Eyepiece

Check it by rotating the eyepiece. (Wipe carefully and gently so as not to damage the lens coating.)

Objective

Dirt is not directly seen, but dirt and dust particles affect the microscope image.

Condenser

Check it by loosening the fixing screw and moving the condenser forward or backward.

Filter/Collector lens

Check it by rotating the filter. (Dust and dirt particles here have minimal effect on the image. However, the overall appearance requires frequent cleaning. Wipe evenly since this is a wide surface area.)

OLYMPUS

BX51

PRE-SET

Built-in Filters

Check it by pulling in and out the knob of filter. Difficult to clean. please consult your Authorized Olympus dealer.

12

11

10 9 8 6 4 P

Mirror for Large format attachment

Dust and durt particles here affect pictures. Difficult to clean without damaging the mirror surface. Please contact your Authorized Olympus dealer.

Note: If dirt particles do not move by moving the above components, it is assumed that the lens and filter inside the microscope is contaminated. In this case, please contact your Authorized Olympus dealer.

- 9 -

BX2 MAINTENANCE MANUAL INSPECTION PROCEDURE

2-3 How to check cleaning condition

1) When a large lens is checked, look at the lens while putting it toward bright side or breathe on the lens and observe the condition that the haze on the whole surface of the lens disappears evenly.

light

Dust becomes conspicuous when If there is a dirty part or a remained looking at it with the lens inclination part that is not cleaned completely, changed. the haze of this part will disappear slower than that of the other part.

2) For a small lens such as top lens of objective, check it by magnifier.

An eyepiece can be substituted for magnifier by turning the eyepiece upside down.

- 10 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

Chapter 3.

REPAIR PROCEDURE

1. Optical adjustment

PREPARATION

If the left/right optical axis is remarkably displaced at checking, perform the following adjustment.

CROSS WH10X

Align the specimen center with the cross center of the WH10X eyepiece by turning the control knob of the stage.

Adjusting the left/right optical axis

*Insert the cross eyepiece into the right sleeve.

Objective 4X-10X

specimen whose center is identified (Concentric circles etc.)

*Adjust the interpupillary distance to about 62mm (See the illustration).

70

60

50

position of approx. 62mm

Cross center of cross WH10X

Before adjustment

specimen center

After adjustment

Control knob

- 11 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

ADJUSTMENT THE LEFT/RIGHT OPTICAL AXIS

(1) Moving the cross eyepiece to the left sleeve.

Work Image seen through the cross eyepiece Move the cross eyepiece to the left sleeve. If the optical axis between left and right sleeve

is deviated, the center of the specimen and the cross center of eyepiece are also deviated.

70

60

50

(2) Aligning the cross center of eyepiece with the specimen center.

Work Image seen through the cross eyepiece

1. Loosen the two screws slightly which

Image at first

secure the left sleeve.

70

60

50

2. Align the center of eyepiece with the

The center are aligned. specimen center while observing through the cross WH10X. (Change the left sleeve position by hand.)

70

60

50

- 12 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

3. Firmly tighten the screws which secure the left sleeve.

70

60

50

Image at the end of adjustment

- 13 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

2. Mechanical adjustment

2-1 Adjustment metod for the tension of X/Y-wire If a specimen image is moved when the stage is brought into the desired position of specimen, it is necessary to adjust the wire tension of stage. ( In case where the stage movement is heavy due to hardening of grease, please contact your Authorized Olympus dealer because disassembling the stage is required for grease replacement.) Adjustment method for X/Y-wire (Refer to the figure shown below.)

1) Remove the stage from the frame.

2) Turn over the stage and loosen the two fixing screws (CUKSK3X6SA) securing the holder.

3) Turn the adjustment screw (CSK3X5SA) clockwise or counterclockwise to adjust the wire tension (See page 15). Tighten the two fixing screws (CUKSK3X6SA).

4) Mount the stage to the frame, set the microscope at observation state and check that the image is brought into the desired position without backlash (within 2 microns at the lowest torque of X/Y stage knob: see page 16).

5) Repeat the procedure 1) to 4) until the condition is satisfied (both X and Y wires).

6) After completing the adjustment , apply adhesive (OT1131) to each three screws.

Cross-section view

*Adjustment screw for X-wire (CSK3X5SA)

*When this screw is turned clockwise(inserting direction), the wire tension increases. The tension decreases by turning it counterclockwise.

Holder (A006)

OLYMPUS U-SVLB-4

9 E 0 0 0 0 2

JAPAN

Fixing screw

(CUKSK3X6SA

)

Adjustment screw for Y-wire (CSK3X5SA)

Holder (A007)

Bottom view

- 14 -

Kob ass'y

(A008)

Fixing screw (CUKSK3X6SA)

Adjustment method of Y-wire is the same as X-wire.

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

2-2 Confirmation of X-wire tension

*1

A

1) Move the X-guide “A” to the center of the upper stage “B” , press”C” of the

X-wire using the fan-shaped tension

C

D

B

2-3 Confirmation of Y-wire tension

B

F

A

gauge(OT3232). If the tension does not meet the standard, adjust the tension so as to be within the standard when the X-wire comes into contact with “D” wall by means of the CSK3X5SA(*1) screw.

Tension standard

1) Press the upper part of Y-wire “A” indicated by the the arrow with the fan-shaped tension gauge. If the tension does not meet the standard, adjust the CSK3X5SA(*1) scew so that the tension is within the standard when the Y-wire comes into

0.25-0.3N(25-30gf)

contact with “F” part of the lower stage “B” when seen from the above.

Tension standard

*1

Note: If the wire is too tight, image backlash may occur. If the tension is below the standard value, slip may occur between the knob and the wire deteriorating the image movement.

0.88-0.98N(90-100gf)

- 15 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

2-4 Final adjustment

(1) Image backlash adjustment

1) Set the stage on the microscope frame. Under observation state (with 100X objective),

A

check image backlash at the lowest knob torque. If it is over 2 microns, conduct adjustment. (The knob rotation torque is measured by turning the knob with a sting or some other suitable item adhered to it, using tension gauge.)

*2

2) When adjusting Y-movement, loosen the two screws(*1) and turn the Y-knob “A” to bring backlash within 2 microns. Turn the stopper ring “B” to come into contact with knob “A”,

C

and fix the stopper ring using the two

(A009)

AWU2X2SA(*1) screws.

3) When adjusting X-movement, remove the X-knob “C” after loosing the two AWU3X3SA

*1

B

D

Tension gauge: OT3326

screws. Loosen the screw(*2). Turn the F-ring “D” to bring image backlash within 2 microns, and fix the F-ring using the HU1.7X2SA(*2) screw.

At this time, make sure that the final knob torque at the lowest is within the following standard for both X and Y.

Knob torque at the lowest: X: 0.25 -0.35N (25 - 35gf) Y: 0.39 - 0.59N (40 - 60gf)

- 16 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

3. Grease replacement for fine focus adjustment knob ass’y

If the adjustment knob is not turned smoothly, replace grease on the shaft and gear of fine adjustment ass’y in the following procedure. (In case where the coarse adjustment knob ass’y is not turned evenly, please contact your Authorized Olympus dealer because it is necessary to disassemble the coarse adjustment knob ass’y and/or guide unit.)

1) Remove the screw (AB4X10SA *1) and take off the knob.

2) Hold the fine focus adjustment knob (left) and turn the fine focus adjustment knob (right) to remove them. (At this time, the fine focus adjustment knob ass’y (right ) is removed as an assembly of shaft, gear and fine focus adjustment knob. )

3) Remove grease(OT2008) on the shaft by cleaning solution and replace it. For the gear, apply grease(OT2012) on it.

4) Assemble the components in reverse order of disassembly.

(A005) Cap

Fine focus adjustment knob (Left) (A004)

Fine focus adjustment knob ass'y (right)

(A002) Apply grease (OT2008) to the shaft.

Adhesive(OT1087) has been applied to the screw thread of shaft on the right side.

Apply grease (OT2012) to the gear. (A001)

Fine focus adjustment knob (A003)

Knob

*1

- 17 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

4. Electrical adjustment

The following shows the voltage adjustment when the rheostat ass’y is replaced.

(1) Replacement of rheostat ass’y

1) Remove the bottom cover “A” of microscope frame.

2) Loosen the screw of knob “B” and disassemble the parts in order of “B” to to “E”.

Note: Remove the rheostat ass’y

from inside of base.

3) Disconnect the connector of rheostat ass’y.

4) Reassemble them in reverse order.

A

Rheostat ass'y (A011/A012)

E

D

C

B

Knob

(A010)

(2) Setup for adjustment (BX51/52)

1) Remove the back panel of microscope

frame.

Connect the lamp housing. (U-LH100-3/U-LH100)

Power board

Screw: CUK3X6SA 8 pcs.

2) Remove the control board . (Refer to the next page.)

CN51

VR52

Screw: CUTB3X6SA 4 pcs.

3) Prepare for adjustment as shown in the

Lamp voltage output terminal

12.2

Digital multimeter(RMS)

- 18 -

left figure.

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

(3) Adjustment procedure (BX51/52)

1) Turn on the power, and then turn the knob “B” (P.18) to the maximum level.

2) In step 1), turn the trimmer VR52 (P.18) on the power board to adjust the lamp output voltage to 12.2V, using the digital

This LED should be lit.

Control board

Connect it to the connector CN51 on power board.

Connect it to the relay board. (only BX51/52TRF)

multimeter.

Standard DC12.2V+/-0.1V

VR103

3) Turn on the light preset switch.

4) Set the light preset voltage to 9V by

VR101

turning the VR101.

Standard DC9V+/-0.1V

Light preset switch

5) In step 4), turn the trimmer VR103 so that

Connect it to rheostat ass'y. (A012)

nineth LED from the bottom will light.

6) Apply solvent-based adhesive(OT1026) to several points around all trimmers except

(4) Setup for adjustment (BX41/45)

Power board

CN21

Lamp voltage output terminal

Install U-LS30-4 on the frame

5.9

VR101 to avoid turning the trimmers.

1) Remove the back panel of microscope

frame. Screw: CUKSK3X8SA 7 pcs.

Note: In case of disassembly from the frame, after removing the screws, separate the back panel from wrench holder and take off the panel while shifting it down.

2) Remove the control board . (Refer to the next page.)

Screw: CUTB3X6SA 2 pcs.

3) Prepare for adjustment as shown in the left figure.

Digital multimeter (RMS type)

- 19 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

(5) Adjustment procedure (BX41)

Connect to the connector CN21 on power board.

1) Turn on the power, and then turn the knob “B” (P.18) to the maximum level.

2) While turning the trimmer (VR203”A”) on the control board, adjust the lamp output voltage to 5.9V using the digital multimeter.

VR203

A

Standard DC5.9V+/-0.1V

3) Turn on the light preset switch.

4) Set the light preset voltage to 4V by

Light preset switch

VR202

B

Control board

turning the the trimmer (VR202”B”).

Standard

DC4V+/-0.1V

5) For prevention of turning, apply solvent-based adhesive(OT1026) on

Connect to the rheostat ass'y (A011).

the one spot of trimmer(VR203).

(6) Adjustment procedure(BX45)

Connect to the connector CN21 on power board.

1) Turn on the power, and then turn the knob “B” (P.18) to the maximum level.

2) While turning the trimmer (VR203”A”) on

Light preset switch

the control board, adjust the lamp output voltage to 5.9V using the digital multimeter.

VR203

A

Standard DC5.9V+/-0.1V

3) Turn on the light preset switch.

4) Set the light preset voltage to 4V by turning

Connect to the rheostat ass'y (A011).

5) For prevention of turning, apply

VR202

Control board

B

the trimmer (VR202”B”).

Standard DC4V+/-0.1V

solvent-based adhesive(OT1026) on the

- 20 -

spot of trimmer (VR203).

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

5. Connecting diagram

BX51TF/BX52TF

U005

Power Board

INPUT

100-120/

220-240VAC 50/60Hz

U002

L E N

U001

L

Fuse Board

N

X001

121

2 U003 S001

4

3

1

21212

U004

CN1

CN51

1 5

CN52

CN54

U006

2 1 3 4

12V 100W Halogen Lamp

BX51TRF/BX52TRF

U002

INPUT

L

100/120V 220/240VAC 50/60Hz

E N

U001

L

Fuse Board

N

X001

1212314

S001

U003

1

CN101

5

Displa y Board

X002- X006 X007- X012

U005

12V

2 3 4

2 1 3

100W Halogen Lamp

1

4

12V 100W Halogen Lamp

U008

U006 U007

CN104 CN105

1

Rela y Board

CN101

2

CN106

X002- X006 X007- X012

U004

CN1

121

Pow

2

er Board

1 5

1

CN101

Displa

CN51

y Board

CN102

5

CN52

CN53

CN54

1

2

- 21 -

BX2 MAINTENANCE MANUAL REPAIR PROCEDURE

BX41TF/BX45TF

U005

Power Board

INPUT

100-120/ 220-240VAC

50/60Hz

U002

L E N

U001

L

Fuse Board

N

1212314

S001

U003

U004

CN1

121

2

CN21

1 7

7 1

CN201

Display Board

X001- X005 X006- -X011

CN20

U006

1

2

6V 30W Halogen Lamp

- 22 -

BX2 MAINTENANCE MANUAL TROUBLESHOOTING

Chapter 4. TROUBLESHOOTING

1. Electrical problem

BX51/52 Problem Cause Remedy

Bulb is nearly burned out. Replace bulb.a) Bulb intermittently lights and goes

out.

A connector is not properly connected. Check all connectors.

b) Bulb burns out almost immediately. Wrong type of bulb is being used. Use correct bulb type.

c) Brightness does not change when

Light preset switch is set ON. Preset switch to OFF.

you turn light intensity adjustment

knob. d) All voltage indicator LEDs light and voltage cannot be varied with light intensity adjustment knob.

e) Lamp voltage cannot be varied with light intensity adjustment knob.

Bulb is not installed. Install bulb.

Bulb is burned out. Replace bulb. Lamp socket is not connected. Connect lamp socket

correctly.

Bulb is burned out. Replace bulb.

BX41/45 Problem Cause Remedy

a) Bulb intermittently lights and goes

out.

b) Bulb burns out almost immediately. Wrong type of bulb is being used. Use correct bulb type.

c) Brightness does not change when

Bulb is nearly burned out. Replace bulb. A connector is not properly connected. Check all connectors.

Light preset switch is set ON. Preset switch to OFF.

you turn light intensity adjustment

knob.

Bulb is not installed. Install bulb.

Bulb is burned out. Replace bulb.

Lamp socket is not connected. Connect lamp socket

d) Voltage indicator LED does not light or bulb does not light.

The voltage selector switch is set to the wrong position.

- 23 -

correctly. Set the switch to position

matching your local line voltage(100-120V or 220-240V).

BX2 MAINTENANCE MANUAL JIGS AND TOOLS/GREASES AND ADHESIVES

Chapter 5. JIGS AND TOOLS / GREASES AND ADHESIVES

1. List of jigs and tools

No. Description Ref. page

OT3232 Fan-shaped tension gauge (2N) 15

OT3326 Tension gauge (1N) 16

Cleaning tools 2, 3

3822800 Cross WH10X 11, 12, 13

Digital multimeter 18, 19, 20 Philips screwdriver 12, 13 14 Allen wrench 16, 17 Precision screwdriver 19, 20 Dust cover

2. List of greases

No. Description Ref. page

OT2008 Grease (medium) 17 OT2012 Mo grease 17

3. List of adhesives

No. Description Ref. page

OT1026 Solvent-based adhesive 19, 20 OT1087 Anaerobic adhesive

(used when fine focus adjustment knob ass’y is disassembled)

OT1131 shellac 14

17

- 24 -

BX2 MAINTENANCE MANUAL MAINTENANCE PARTS

Chapter 6.

MAINTENANCE PARTS

1. List of maintenance parts

Index No. Order No. Description Ref. page

AX9870 BX41RF Instruction manual AX9853 BX41TF Instruction manual AX9857 BX45TF Instruction manual AX9869 BX51RF Instruction manual

AX9855 BX51/52 Instruction manual A001 AB872600 Gear A002 AD490000 Fine focus shaft A003 AD490400 Fine focus adjustment knob (right) A004 AD490500 Fine focus adjustment knob (left) A005 AD490800 Cap A006 AC740900 Holder (for X-wire) A007 AD411200 Holder (for Y-wire) A008 AQ212500 Knob ass’y (for clamping stage) A009 AD604200 X-knob 16 A010 AD495600 Knob A011 DZ268000 Rheostat ass’y (for BX41/45) A012 DZ268100 Rheostat ass’y (for BX51/52)

12V100W halogen bulb (for BX51/52) 6V30W halogen bulb(for BX41/45)

17

14

18, 19, 20

21, 22, 23

- 25 -

OLYMPUS OPTICAL CO., LTD

1-22-2, Nishi shinjuku shinjuku-ku, Tokyo, Japan

Issued by Life Science Marketing Dept.

Printed in Japan 2001 01 SK9212

Olympus BX-2 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual

INTRODUCTION

CONTENTS

1. Maintenance of microscope

2. Guide to maintenance

2-1 Overview of maintenance

2-2 Cleaning method for the optical components

3. Preparing for inspection

4. BX2 inspection sheet

1. Checking performance of microscope Using the BX2 maintenance sheet (P.7), check the electrical unit, mechanical and

2. Checking dirty portion

2-2 How to find dirty portion through observation

2-3 How to check cleaning condition

1. Optical adjustment

2. Mechanical adjustment

2-2 Confirmation of X-wire tension

2-3 Confirmation of Y-wire tension

2-4 Final adjustment

4. Electrical adjustment

5. Connecting diagram

Chapter 4. TROUBLESHOOTING

1. Electrical problem

Chapter 5. JIGS AND TOOLS / GREASES AND ADHESIVES

1. List of jigs and tools

2. List of greases

3. List of adhesives

1. List of maintenance parts