Olympus CH10 Operating instructions

BIOLOGICAL MICROSCOPE
CH10 / CH20
REPAIR MANUAL
OLYMPUS

BIOLOGICAL MICROSCOPE
CH10 / CH20
REPAIR MANUAL
OLYMPUS
All rights reserved. Reproduction in whole or in part without written permission is prohibited. (9B)

CH10/CH20
CONTENTS
A. OUTLINE OF PRODUCT
1. Kinds of Product ....................................................................................................A-1
2. Outline ...................................................................................................................A-1
3. Features..................................................................................................................A-1
4. Using Conditions....................................................................................................A-2
5. Specifications .........................................................................................................A-2
6. Dimensions.............................................................................................................A-4
B. INSPECTION STANDARD
1. Inspection Items and Methods ................................................................................B-1
1-1 Microscope frame and stage ..........................................................................B-1
1-2 Observation tube ...........................................................................................B-2
C. DISASSEMBLY AND ASSEMBLY PROCEDURES
1. Focusing Unit.........................................................................................................C-1
1-1 Base plate and arm........................................................................................C-1
1-2 Coarse / fine adjustment knob........................................................................C-2
1-3 Guide unit .....................................................................................................C-4
2. Revolving Nosepiece..............................................................................................C-6
3. Stage......................................................................................................................C-7
3-1 X / Y-knob ass’y...........................................................................................C-7
3-2 X-guide unit and stage clip holder..................................................................C-8
3-3 Y-guide unit ..................................................................................................C-10
4. Observation Tube...................................................................................................C-11
4-1 Sleeves and cover..........................................................................................C-11
4-2 Prism ass’y and mirror ass’y..........................................................................C-12
5. Condenser ..............................................................................................................C-13
6. Collector Lens Part.................................................................................................C-14
D. REPAIR PROCEDURE
1. Centering of Optical System and Voltage Adjustment.............................................D-1
1-1 Optical axis adjustment of revolving nosepiece ..............................................D-1
1-2 Illumination center adjustment .......................................................................D-1

CH10/CH20
1-3 Condenser center adjustment .........................................................................D-1
1-4 Voltage adjustment........................................................................................D-2
2. Observation Tube (C20−BI45) Adjustment.............................................................D-3
2-1 Adjustment procedure ...................................................................................D-3
2-2 Preparations ..................................................................................................D-3
2-3 Left / right optical axis adjustment, parfocality adjustment .............................D-4
2-4 Exit pupil center check ..................................................................................D-5
E. JIGS AND TOOLS
1. List of Jigs and Tools..............................................................................................E-1
F. LUBRICANTS AND CHEMICALS
1. List of Lubricants...................................................................................................F-1
2. List of Chemicals....................................................................................................F-1

CH10/CH20 A. OUTLINE OF PRODUCT
A-1
1. Kinds of Product
CH20F Kinds of product
Names of unit Contents of unit
1. CH20BIMF110 Overseas area: 100V system CH20 frame with BI, MVR
2. CH20BIMF200 Overseas area: 200V system CH20 frame with BI, MVR
3. CH20MOMF110 Overseas area: 100V system CH20 frame with MO, MVR
4. CH20MOMF200 Overseas area: 200V system CH20 frame with MO, MVR
5. CH20BIMF100 Japan: 100V system CH20 frame with BI, MVR
6. CHMOMF100 Japan: 100V system CH20 frame with MO, MVR
7. CH20MOF100 Japan: 100V system CH20 frame with MO
CH10F Kinds of product
Names of unit Contents of unit
1. CH10BIMF Overseas area: CH10 frame with BI, MVR
2. CH10BIF Overseas area: CH10 frame with BI
3. CH10MOMF Overseas area: CH10 frame with MO, MVR
4. CH10MOF Overseas area: CH10 frame with MO
5. CH10MOMF-D Japan: CH10 frame with MO, MVR
6. CH10MOF-D Japan: CH10 frame with MO
Stage: MVR (mechanical stage) Observation tube: MO (monocular), BI (binocular)
2. Outline
(1) CH20 and CH10 are low-price, economical biological microscopes, which offer an advanced
range of functions and specifications required for clinical and educational use.
(2) CH20 and CH10 are LB optical microscopes, which are substitutes up-graded in specifications
for the conventional CHK2.
(3) External standard
Electrical safety standard: IEC1010-1, EN61010-1, UL3101-1
Armature emission: EN55011, Group 1, Class B
Immunity: EN550082-1
According to the above standards, we got UL and GS mark and declare CE mark.
3. Features
(1) Main features
žCondenser movement (vertical) by rack and pinion, approx. 10 mm stroke
žField diaphragm unit (CH3-FS) is available optionally.
žArm with DS (Direct Sight) window through which specimen can be observed with naked eye
from the back.
žFocusing knob which can be controlled while putting your hands on the table.
(2) Illumination is bright because 6V20W halogen lamp is employed.

CH10/CH20 A. OUTLINE OF PRODUCT
A-2
(3) The dust-proof observation tube keeps off dust and also anti-fungus treatment for it is effective
for protecting from fungus.
(4) The handhold enable you to hold the microscope frame easily.
(5) LB objective of 45 mm focal distance is employed.
4. Using Conditions
(1) Standard performance cannot be ensured in combination with objectives other than NEA series,
PCDA10XPL, PCDA40XPL, and EA60X.
(2) Standard performance cannot be ensured in combination with eyepieces other than
NCWHK10X (for binocular/ monocular observation tube) and ER15X (for monocular
observation tube).
(3) Intermediate attachment, photomicrographic unit, and TV unit can not be used.
(4) Condenser is provided as a standard, and it is not interchangeable.
(5) Standard performance cannot be ensured in combination with units other than darkfield central
stop (CH2-DS), phase contrast attachment (CH2-RS10, RS40), and attachment lens (CH3-
AL).
(6) CH2-DS can not be used for objective 4X and 100X.
(7) Field diaphragm unit and attachment lens (CH3-FS, CH3-AL) can be attached optionally.
However, use them for objective 40X or less.
(8) When FS and AS are stopped down to the minimum, ghost may occur.
(9) Mechanical stage is not interchangeable.
(10) Micrometer eyepiece cannot be attached to the binocular observation tube.
(11) Operating environment temperature: 5°C - 40°C, humidity: 30 - 80 %
(12) Blue filter (LP5146), which is made from plastic, should not be wiped off with organic
detergent.
5. Specifications
Items Specifications Remarks
1Observation
tube 1) Circular dovetail type, rotatable for 360°
2) Anti-fungus treatment
3) Eyepiece sleeve diameter: φ23.2 mm
4) MO45 inclination angle: 45°
5) BI45 Jentsh type inclination angle: 45°,
interpupillary distance adjustment : 53 - 75
mm, left diopter compensation: ±5 Diopter
2Revolving
nosepiece 1) Fixed quadruple revolving nosepiece (with front side facing upward)
2) Center bearing type
Arm and revolving nosepiece integrated (fixed)
3Stage 1) Fixed plane stage
2) Fixed mechanical stage (with C20-MVR)
3) Dimensions: 120 ×120 mm

CH10/CH20 A. OUTLINE OF PRODUCT
A-3
Items Specifications Remarks
4) Working range •40 mm in longitudinal
direction
‚76 mm in lateral direction
5) Clip holder (lever type)
žHolding capacity: a standard slide glass (76 ×
26 mm)
žSpecimen thickness: 0.9 - 1.4 mm
žInclination form: 30°
6) With biological clip holder (except FM type)
4Focusing
mechanism 1) Coaxial coarse and fine adjustment knobs 2) Coarse / fine adjustment stroke: 20 mm or
more
3) With fine scale: 2.5 µm / graduation
4) Fine adjustment stroke per rotation: 0.3 mm
5) Coarse adjustment knob (with the torque
adjustment mechanism)
6) Without coarse adjustment lock mechanism
5Condenser
holder 1) Dovetail type (Condenser can be attached and removed freely.)
2) Rack and pinion vertical motion, rotating; knob
type, stroke: 10 mm or more
6Condenser 1) Numerical aperture: N. A. 1.25 (using in
immersion oil)
2) Aperture diaphragm: diaphragm diameter; φ1.7
- 29 mm
3) Exclusive condenser with dovetail and rack
integrated
4) A filter of φ32.5 can be attached (CH2-FH).
5) CH2-RS10, RS40 and DS can be attached.
6) CH3-AL can be attached (CH20F only).
Six diaphragm
blades
Optional
Optional
Optional
7Collector lens
part 1) CH3-FS can be attached: circular fitting snap type
2) A filter of φ45 can be attached.
8Light source 1) 6V20W halogen lamp
2) Lamp replacement by opening and closing back
cover
3) Built-in transformer, phase control system
4) Dial continuous light intensity control:
indicating the position by graduation
Halogen bulb:
Philips 7388
(average life-
time: 100 H)
9Filter Blue filter (KB-P) is attached directly to the lower
part of the condenser.
10 Weight CH20F: 4.4 kg
CH10F: 3.4 kg at CH10/20BIMF setting
11 Storing case žWooden box (CH20)
žPlastic case (CH10)

CH10/CH20 A. OUTLINE OF PRODUCT
A-4
6. Dimensions
[Unit: mm]

CH10/CH20 B. INSPECTION STANDARD
B-1
1. Inspection Items and Methods
1-1 Microscope frame and stage
Part Item Standard Method
Illumination Illumination center Deviation to
optical axis of
collector lens:
within 10%
Set the centering telescope (KN0029)
to the right sleeve, and read the
displacement between the optical axis
of collector lens and the cross hairs
center of centering telescope.
Coarse/fine
adjustment Coarse adjustment knob rotation
force
5.9 N {600g} or
less Tie a string around the knob, rotate it to measure the working force with a
tension gauge.
Fine adjustment
knob rotation
force
0.14 -0.44N
{15 - 45g}
Condenser
holder Condenser knob rotation force 2.5 - 5N {250 - 500g} Tie a string around the knob, rotate it to measure the working force with a
tension gauge.
Revolving
nosepiece Rotation force 0.78 ±0.57N {80
±60g} Attach an objective to the revolving
nosepiece, and measure the rotation
Click removing
force 3.92 ±1.96N
{400 ±200g} force with a tension gauge.
Stage X/Y-knob rotation
force X = 0.2 - 0.98N {20 - 100g}
Y = 0.49 - 1.96N
{50 - 200g}
Tie a string around the knob, rotate it to
measure the working force with a
tension gauge.
Clip holder
clearance Pass through 0.2 mm thickness
Stop at 0.7 mm
thickness
Measure the clearance between the
stage and the clip holder with a
thickness gauge.

CH10/CH20 B. INSPECTION STANDARD
B-2
1-2 Observation tube
Part Item Standard Method
Binocular
tube Interpupillary distance
adjustment
range
53 mm or less at
min. - 75 mm or
more at max.
Set the observation state, insert a thin paper with
graduations at the eye point position and measure
the interpupillary distance.
Interpupillary
distance
working force
3.9 - 9.8N {400 -
1000g} Tie a string around the sleeve periphery, work the interpupillary distance to measure the working
force with a tension gauge.
Diopter
difference
compensa-
tion
Compensa-
tion range ±5 diopter Turn the diopter ring and check that the scale goes over the limit.
Optical
axis Left/right optical axis On image surface: 0.15 mm or less in
vertical direction
0.15 mm or less in
outward direction
0.3 mm or less in
inward direction
Observe a specimen whose center can be
identified (e.g., on concentric circles) using the
standard eyepiece (KN0048; with adapter-1) and
4X or 10X objective.
Align the center of specimen with that of visual
field in the right sleeve as the standard, and read
the displacement between centers of the
specimen and the visual field in the left sleeve
using the reticle scale (1 graduation is 0.1 mm.)
of KN0048.
Absolute
optical axis
(right sleeve
only)
0.3 mm or less on
image surface Set theinterpupillary distance to 62 mm, combine the standard eyepiece (KN0048; with adapter-1),
the microscope frame (product) and the standard
objective (KN0015), and read the displacement
between centers of the specimen and the visual
field in the right sleeve using the reticle scale of
KN0048.
Exit pupil
center Within 20% of objective’s exit
pupil diameter
Combine the centering telescope (KN0029), 4X
or 10X objective, and the microscope frame
(product), and read the displacement between the
objective’s exit pupil diameter center and the
cross hairs center of centering telescope.
Tube length Absolute
parfocality ±0.5 mm or less on
image surface Combine the standard eyepiece (KN0048; with
adapter-1), the focusing telescope (FT-36), the
microscope frame (product), and the standard
objective (KN0016).
Set theinterpupillary distance to 62 mm, and read
the parfocality difference between the reticle in
KN0048 (with adapter-1) and the specimen in
KN0016 using helicoid scale (1 graduation is 0.1
mm.) of KN0048.

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-1
1. Focusing Unit
1-1 Base plate and arm
No. Parts name Screw Grease Adhesive Remarks
•DAIAL
‚PLATE ACU3X4SA (*1)
ƒWASHER OT2008
„BASE PLATE CUKSK3X6SA (*2) 5
pcs.
HWB3SB (*3)
Remove the base
plate, opening the
lamp cover.
…ARM AB5X12SA (*4) 3 pcs.
*1
*2
*2
*2
*2
*3
„
•
ƒ
‚
…
*4

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-2
1-2 Coarse / fine adjustment knob
No. Parts name Screw Grease Adhesive Remarks
•FINE ADJ.
KNOB OT1131 Apply adhesive on the attaching part of
fine adj. shaft
±
15.
‚SPRING
WASHER OT2008 With the convex side toward the arm
ƒWASHER OT2008
„FINE SHAFT
MOUNT
…COARSE ADJ.
KNOB-R
†TENSION
KNOB OT2006 Apply grease on M20 screw thread.
‡SPRING OT2006 Apply grease on the contact points of
spring.
ˆTENSION
RING OT2006 Apply grease on the groove.
‰ARM AB3X14SA (*1)
±
10 (GEAR ASS’Y) ACU3X14SA
(*2) Tighten the screw 45°after the screw end comes in contact with the coarse adj.shaft
±
11.
±
11 COARSE ADJ.
SHAFT ER12SA (*3) OT1028 Apply adhesive on the screw thread of
coarse adj. knob
±
13.
±
12 CAM OT2008 Apply grease on the cam sliding surface
and the fitting surface of coarse adj. shaft
±
11.
Figure-A (Fine adjustment gear set)

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-3
±
10 GEAR ASS’YInsert the gear ass’y Šinto the groove of
coarse adj.shaft
±
11 and engage the big gear
A at the right side with the gear inside of
the cam
±
12.
±
13 COARSE ADJ.
KNOB-L
±
14 FINE ADJ.
KNOB OT1028 Apply adhesive on the screw thread of fine
adj. shaft
±
15.
±
15 FINE ADJ.
SHAFT OT2008 Apply grease on the sliding surface.
±
16 RING
±
17 FINE ADJ.
GEAR Press in to 101 mm from the end of the
fine adj. shaft
±
15. See Figure-A on previous
page.
±
18 RING

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-4
1-3 Guide unit
No. Parts name Screw Grease Adhesive Remarks
•STAGE AB3X8SA (*1) 3 pcs.
‚FRONT
COVER Remove the base. ( See C-1.)
ƒOUTER
GUIDE AB3X12SA (*2) 3 pcs. CUTB2X4SA (*3)
2 pcs.
OT2008 Apply grease on the fitting
surface of wire guide „thinly.
„WIRE
GUIDE
(2 pcs.)
OT2008
…ROLLER
(8 pcs.) NP2.5X22UO (*4)
†WIRE
GUIDE
(2 pcs.)
OT2008
‡INNER
GUIDE CUTB2X4SA (*3) 2 pcs. OT2008
ˆBEARING 3PUK2X3SA (*5)
‰SHAFT 6N3SA (*6) OT1028 Apply adhesive on the M2 tap
hole and the outside diameter of
screw.
±
10 WIRE
GUIDE
(2 pcs.)
OT2008

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-5
±
11 ROLLER
(8 pcs.) NP2.5X22UO (*7)
±
12 WIRE
GUIDE
(2 pcs.)
OT2008
±
13 ARM OT2008 Apply grease on the fitting
surface of wire guide
±
12.
Inner guide working force:
1 - 1.5 N {100 - 150 g}

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-6
2. Revolving Nosepiece
No. Parts name Screw Grease Adhesive Remarks
•SCREW
‚NOSEPIECE
SPRING Absolute optical axis: within 0.3 mm
Click removing force: 6.4 - 8.8N
{650 - 900g}
Optical axis adjustment of
revolving nosepiece (See Repair
Procedure, D-1.)
ƒSHAFT ANU5X6SA (*1)
B3SO (*2) 10 pcs. OT2008 OT1028 Apply grease on the balls (B3SO) fitting surface.
Apply adhesive on the screw
thread.
„NOSEPIECE B3SO (*3) 66 pcs. OT2008 Apply grease on the balls
(B3SO) fitting groove.
…RING
†KNOB OT2008 Apply grease on the screw
thread.

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-7
3. Stage
3-1 X/Y-knob ass’y
No. Parts name Screw Grease Adhesive Remarks
•X-KNOB 6N4SA (*1) OT1131 Apply adhesive on the nut.
Rotation force: 0.4±0.1N
{50±10g}
‚WASHER OT2008
ƒSPRING
WASHER OT2008
„WASHER OT2008
…NUT
†PINION OT2008 Apply grease on the fitting
surface with Y-knob ‡M.
‡WASHER OT2008
ˆNUT
‰WASHER OT2008
±
10 SPRING
WASHER OT2008
±
11 WASHER OT2008
±
12 METAL OT1028 Apply adhesive on the fitting
screw of body•. (See C-9.)
±
13 WASHER NW7.2-412BO (*2) OT2008
±
14 Y-KNOB Rotation force: 1.1 - 1.2N
{110 - 120g}

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-8
3-2 X-guide unit and stage clip holder
5
67
9
8
12
11
10

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-9
No. Parts name Screw Grease Adhesive Remarks
•BODY AB3X8SA (*1)
2 pcs. OT1028 Apply adhesive on the assembly surface for lateral guide-1ˆ.
‚CLIP HOLDER 3PUK2X8SA (*2)
3 pcs. OT1131 Apply adhesive on the screw head. Clearance between the stage and the
clip holder: 0.2 - 0.7 mm
ƒSPACER Mount the spacer with the round edge
side faced downwards.
„CLIP CSK3X8SA (*3) OT2008 Apply grease on the contact surface
with the clip holder ‚.
…NUT OT2008 Apply grease on the contact surface
with the clip holder ‚.
†SPRING OT2008 Clip working force: 1.0 - 1.5N {100 -
150 g}
‡LATERAL
GUIDE-3 3PUK2. 6X10SA (*4) 3 pcs.
SP1.6X4UO (*5)
PSTB1. 7X3SA (*6) 2
pcs.
OT1131 Apply adhesive on the screw head.
ˆLATERAL
GUIDE-1 PSTB1. 7X3SA (*7) 2 pcs. OT2008 Apply grease on the fitting surface of
wire guide
±
15 thinly.
‰WIRE GUIDE
(2 pcs.) OT2008
±
10 CASING B3SO (*9) 6 pcs. OT2008 Apply grease on the balls.
±
11 WIRE GUIDE
(2 pcs.) OT2008
±
12 LATERAL
GUIDE-2 PSTB1. 7X3SA (*8) 4 pcs. Apply grease on the wire guide fitting surface thinly.
Rotation force at assembling the X/Y-
knob: 0.2 - 0.98N {20 - 100 g}
±
13 WIRE GUIDE
(2 pcs.) OT2008
±
14 CASING B3SO (*10) 6 pcs. OT2008 Apply grease on the balls.
±
15 WIRE GUIDE
(2 pcs.) OT2008
±
16 X-RACK 3PUK2X6SA (*11)
2 pcs.
HWB2SA (*12) 2 pcs.
OT1131 Apply adhesive on the screw head.
±
17 SPRING

CH10/CH20 C. DISASSEMBLY AND ASSEMBLY PROCEDURES
C-10
3-3 Y-guide unit
No. Parts name Screw Grease Adhesive Remarks
•BODY AB3X10SA (*1) 3 pcs.
‚Y-RACK 3PUK2X6SA (*2) 2 pcs.
HWB2SA (*3) 2 pcs. OT1131 Apply adhesive on the screw head.
ƒVERTICAL
GUIDE-3 AB3X10SA (*4) 4 pcs. PSTB1. 7X3SA (*5) 2 pcs. Apply grease on the fitting surface of wire guide „thinly.
„WIRE GUIDE
(2 pcs.) OT2008
…CASING B3SO (*6) 6 pcs. OT2008 Apply grease on the balls.
†VERTICAL
GUIDE-2 CUK3X8SA (*8) PSTB1. 7X3SA (*7) 4 pcs. OT2008 Apply grease on the fitting surface of wire guide ‡thinly.
Rotation force at assembling the
X/Y-knob: 0.49 - 1.96N {50 - 200
g}
‡WIRE GUIDE
(2 pcs.) OT2008
ˆCASING B3SO (*9) 6 pcs. OT2008 Apply grease on the balls.
‰WIRE GUIDE
(2 pcs.) OT2008
±
10 VERTICAL
GUIDE-1 PSTB1. 7X3SA (*10) 2 pcs. OT2008 Apply grease on the fitting surface of wire guide ‰thinly.