Nikon Ni-U service manual

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Repair ManualNIKON CORPORATION

ECLIPSE Ni-U Main Body

2012 NIKON CORPORATION All rights reserved

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REV. RECORD R-4890 REV. NUMBER:0

PAGE REV.MARK REV. DATE PAGE REV.MARK REV. DATE PAGE REV.MARK REV. DATE

1 A 2012.3.xx 35 69 2 1 2012.3.xx 36 70 3 A 2012.3.xx 37 71 4 A 2012.3.xx 38 72 5 A 2012.3.xx 39 73 6 A 2012.3.xx 40 74 7 A 2012.3.xx 41 75 8 A 2012.3.xx 42 76 9 A 2012.3.xx 43 77

10 A 2012.3.xx 44 78 11 A 2012.3.xx 45 79 12 A 2012.3.xx 46 80 13 A 2012.3.xx 47 81 14 A 2012.3.xx 48 82 15 A 2012.3.xx 49 83 16 A 2012.3.xx 50 84 17 A 2012.3.xx 51 85 18 A 2012.3.xx 52 86 19 A 2012.3.xx 53 87 20 A 2012.3.xx 54 88 21 A 2012.3.xx 55 89 22 A 2012.3.xx 56 90 23 A 2012.3.xx 57 91 24 A 2012.3.xx 58 92 25 A 2012.3.xx 59 93 26 A 2012.3.xx 60 94 27 A 2012.3.xx 61 95 28 A 2012.3.xx 62 96 29 A 2012.3.xx 63 97 30 A 2012.3.xx 64 98 31 65 99 32 66 100 33 67 101 34 68 102

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Table of Contents Foreword..............................................................................................................................P.4 Notes for Repair ............................................................................................................P.4 1. Tools.............................................................................................................................P.5 1-1. Tools for General Use and Preparations .................................................................P.5 1-2. Tools for Special Purposes ......................................................................................P.6 2. Removing the Cover ...................................................................................................P.7 2-1. Removing the Rear Cover........................................................................................P.7 2-2. Removing the Right and Left Front Covers..............................................................P.7 2-3. Removing the Elevation Block .................................................................................P.8 2-4. Removing the Base Front Cover..............................................................................P.8 2-5. Removing the Right Side Cover...............................................................................P.9 2-6. Removing the Left Cover .......................................................................................P.10 3. Replacing Electrical Parts.......................................................................................... P.11

3-1. Replacing the Power Supply Assembly.................................................................. P.11 3-2. Replacing the Switch Board ...................................................................................P.12 3-3. Replacing the Brightness Control Dial (#1109).......................................................P.12 3-4. Replacing the Power Switch...................................................................................P.13

4. Replacing Parts and the Mechanical Unit.................................................................P.14 4-1. Replacing the Single-Axis Fine/Coarse Focus Drive..............................................P.14 4-2. Replacing the Elevation Block................................................................................P.14

5. Disassembling/Reassembling the Gear Train..........................................................P.15 6. Disassembling/Reassembling the Single-Axis Fie/Coarse Focus Drive ...............P.17 7. Disassembling/Reassembling the Elevation Block.................................................P.24 8. Adjusting the Stage Tilt..............................................................................................P.28

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Foreword 1. This manual is intended for ECLIPSE Ni-U. 2. Take extra care to avoid injury from sharp edges or projections and electric shock by

touching live components. (Unplug the power cable and wear work-gloves before starting work.)

Notes for Repair Use an appropriate screwdriver for the screw head slot. (Especially take care of the (+) slot

head screw.) The plastic parts must be cleaned with a neutral solvent. If an organic solvent (ether, thinner, alcohol, etc.) is used, discoloring or deterioration of the

part might occur. When cleaning the glass parts, take care to remove dust using a blower etc. and wipe the

parts with a lens tissue moistened with alcohol or alcohol-ether mixture.

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1. Tools 1-1. Tools for General Use and Preparations Tool No. Name Shape J21084 Hex-key set Set (x6) T91400 (+) Screwdriver set Set (x4) T91000 (-) Screwdriver set Set (x6) T91204 (+) Wood handle

screwdriver Diameter 6 mm

T91102 (-) Wood handle screwdriver

Width 5.5 mm

T91305 (+) Screwdriver bit (For JCIS screw M2, M2.6)

2.5mm115mm

T91320 (+) Screwdriver bit holder 8mm

90mm

T92041 Tweezers AA

T92162 Compass spanner A

T92163 Compass spanner B

E719 Handlap

(Alcohol container)

Alcohol (or alcohol-ether mixture), Lens tissue, Blower, Gasoline (for cleaning), Bamboo stick (for applying lubricant, adhesive), Dial gauge, Scraper For Lubricant and Adhesive: Refer to Parts Lists (KR-8231=MBA92010).

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1-2. Tools for Special Purposes Tool No. Name Shape J28005 1-minute reading collimator

J25552 Parallel mirror

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2. Removing the Cover When reassembling the cover, reverse the disassembling procedure. 2-1. Removing the Rear Cover

1) Remove the rear cover (#0054) by extracting the screws (#0096 x 6).

2-2. Removing the Right and Left Front Covers 1) Remove the right front cover (#0052) by extracting the sems bolts (#0092 x 3). 2) Remove the left front cover (#0053) by extracting the sems bolts (#0092 x 3).

Rear cover

Screws (#0096x6) Fig 1

Sems bolts (#0092x6)

Left front cover Right front cover

Fig 2

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2-3. Removing the Elevation Block 1) Remove the elevation block cover (#0055) by extracting the sems bolts (#0083 x 2).

2-4. Removing the Base Front Cover 1) Turn the microscope upside down, and then remove the bottom plate (#0211) by extracting

the screws (#0272 x 8).

Elevation block cover

Sems bolts (#0083x2) Fig 3


Bottom plate

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2) Remove the base front cover (#A019) by extracting the cross-recessed head tapping tight screws (#0091x6). Use care not to damage the power LED unit (the flexible board) which is part of the switch board (#1107) and attached to the base front cover.

3) Extract the cross-recessed head tapping tight screw (#0090) fastening the power LED unit.

2-5. Removing the Right Side Cover 1) Extract the sems screws (#0081x4), and then remove the single-axis fine/coarse focus drive

by supporting the elevation block (#U002) by hand. Without supporting the elevation block, it may drop, causing damage to the rack (#0407) or spur gear (#0414).

Fig 6 Tapping tight screw (#0090) Switch board

Base front cover

Tapping tight screws (#0091x6) Fig 5

Fig 8

0418

0418

0418

0418

0418

0418

04525

0409(X) 0410

0411

0412

0417

0417 0417

0417

0413

0414

0408X

0407

Fig 7 Sems screws (#0081x4)

Elevation block

Single-axis fine/coarse focus drive

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2) Remove the right side cover (#0246) by extracting the sems bolts (#0262x3). Do this by peeling off the double-faced tape bonding together the bottom of the right side cover and the main body, for example using a razor. Also, use care not to damage the capture switch unit (the flexible board) which is part of the switch board (#1107) and attached to the right side cover.

3) Extract the cross-recessed head tapping tight screws (#0271x2) fastening the capture switch unit.

2-6. Removing the Left Cover 1) Remove the brightness control dial (#0212) by loosening the setscrew (#0270). 2) Remove the left side cover (#0245) by extracting the sems bolts (#0262x3).

Do this by peeling off the double-faced tape bonding together the bottom of the left side cover and the main body, for example using a razor. Also, use care not to damage the on/off switch unit (the flexible board) which is part of the switch board (#1107) and attached to the left side cover.

3) Extract the cross-recessed head tapping tight screws (#0271x2) fastening the on/off switch unit.


Right side cover

Fig 9 Fig 10 Tapping tight screws (#0271x2)

Switch board

Fig 11 Sems bolts (#0262x3)

Left side cover Setscrew (#0270)

Brightness control dial

Switch board

Tapping tight screws (#0271x2) Fig 12

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3. Replacing Electrical Parts For reassembling, reverse the disassembling procedure. 3-1. Replacing the Power Supply Assembly 1) Before starting this procedure, make sure that the procedure down to 2-1.1) has been

finished. 2) Remove connector J1, J3, J6, and J7, and then remove the red and white crimp terminals

from terminal boards J4 and J5. 3) Extract the sems bolts (#0082 x 4).

4) Remove the power supply assembly (#1101) by extracting the screws (#0087 x 4).

Power supply assembly

J1

Fig 13

J3, J6, J7 J4, J5



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3-2. Replacing the Switch Board 1) Before starting this procedure, make sure that the procedure down to 2-6.3) has been

finished. 2) Remove the switch board (#1107) by extracting the cross-recessed head screws with

washer (#0267 x 3). 3) Remove connectors J1, J2, and J3 from the switch board.

3-3. Replacing the Brightness Control Dial (#1109) 1) Before starting this procedure, make sure that the procedure down to 3-2.3) has been

finished. 2) Remove the brightness control dial (#1109) by removing its nut and washer.

Fig 17

J1

Switch board

J2

J3

Fig 18 Brightness control dial

Nut Washer

Fig 16 Washer (#0267x3)

Switch board

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3-4. Replacing the Power Switch 1) Before starting this procedure, make sure that the procedure down to 2-2.1) has been

finished. 2) Remove the power switch (#1112) and switch mount (#0224) by extracting the sems bolt

(#0262).

3) Pull the crimp terminals (white x 2, black x 2) from the power switch. 4) Press the white side lugs of the power switch using a screwdriver or the like and remove the

power switch (#1112) from the switch mount (#0224).

Fig 19 Sems bolt (#262)

Power switch

Fig 20 Switch mount Fig 21

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4. Replacing Parts and the Mechanical Unit 4-1. Replacing the Single-Axis Fine/Coarse Focus Drive 1) Before starting this procedure, make sure that the procedure down to 2-4.2) has been

finished.

After removing the single-axis fine/coarse focus drive, install a new knob by pressing it on the reference planes and fastening with sems bolts (#0081 x 4).

4-2. Replacing the Elevation Block 1) Before starting this procedure, make sure that the procedure down to 2-4.2) has been

finished. 2) Remove the elevation block (#U002) by extracting the sems bolts (#0088 x 6).

Install the elevation block by pressing it down to the left. Stage tilt adjustment is required. (See Section 7, "Adjusting the Stage Tilt.")

Fig 22 Press on the reference planes

Fig 23 Sems bolts (#0088x2) Fig 24 Sems bolts (#0088x4)

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5. Disassembling/Reassembling the Gear Train 1) Before starting this procedure, make sure that the procedure down to 2-4.3) has been

finished. 2) Access the sems bolts (#264 x 2) fastening the field stop unit. Extract the left sems bolt and

slightly loosen the right sems bolt to the condition as shown in Fig. 26. 3) Extract the hexagon bolts (#0084 x 3) and remove the gear train unit.

4) Extract the sems bolts (#0452x5) and remove the bearing plate (#0409). You are now ready

to remove the gears and bearings.

Replace any gears broken, or any bearings that are stiff or uneven in motion.


Gear train unit

Hexagon bolts (#0084x3) Fig26

Fig 27

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Insert 3.00 pins into the positioning holes of the bearing plate (#0409). Secure the bearing plate using sems bolts (#0452 x 5), and then extract the 3.00 pins.

Fig 28 3.00 pins

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6. Disassembling/Reassembling the Single-Axis Fie/Coarse Focus Drive

Some screws and bolts are locked using adhesive. Loosen these screws/bolts after dissolving the adhesive using alcohol. For reassembling, reverse the disassembling procedure. Thus, this section only describes main points for reassembling.

1) Before starting this procedure, make sure that the procedure down to 2-5.1) has been

finished. 2) Remove the thin fine focus knob (#A003) and the fine focus knob (#A004).

The fine focus knobs consist of a thin type and normal type as standard features. These two can be changed with each other in a single operation using the magnet.

3) Remove the coarse focus knob (#0301) on the refocus side by extracting the sems bolts

(#0354 x 3).

Sems bolts(#0354x3) Fig 31

Coarse focus knob

Fine focus knob

Coarse focus knob torque adjustment side

Fig 29

Torque adjustment ring

Thin fine focus knob

Refocus side

Fig 30

Refocus ring

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4) Remove the assembly of a fine focus mounting ring (#0324) and a knob holder (#0311) by

extracting the setscrews (#0352 x 2). Also remove the polyacetal washers (#0306 x 2) and disc spring (#0307).

5) Remove the assembly of a transmission holder (#0325) and a fine motion axis (#0212) from

the coarse focus knob torque adjustment side of the single-axis fine/coarse focus drive.

Transmission holder, fine motion axis Fig 33

Setscrews (#0352x2)

Polyacetal washers (#0306x2), disc spring (#0307)

Fig 32

Knob holder

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6) Remove the setscrews (#353 x 2) from the tool holes in the single-axis frame (#323).

When loosening the two setscrews, rotate the coarse focus knob and find the locations of the setscrews.

7) Hold the spring peg (#334) firmly and rotate the coarse focus knob on the other end

counterclockwise, until the spring peg is removed. When the spring peg is removed, the torsion coil spring (#335) comes off.

Spring peg

Fig 35

Coarse focus knob

Fig 36 Torsion coil spring

Spring peg

Fig 34 Setscrews (#353x2)

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Tighten the refocus ring clockwise to secure the stopper ring. Apply the hook of the torsion coil spring to the pin of the spring peg. Apply the other hook of the torsion coil spring to the stopper link pin on the stopper ring. Rotate the spring peg counterclockwise approx. 1.5 turns. During this rotation, the lug of the spring peg comes in contact with the stopper link pin on the stopper ring. Lift the spring peg slightly to allow the lug to pass by the stopper link pin. Press the spring peg into the pinion housing, and then rotate the coarse focus knob on the other end clockwise so that the pinion housing is screwed tightly into the spring peg.

1) Tighten the refocus ring by rotating it clockwise. 2) Rotate the coarse focus knob until the elevation block reaches the limit. 3) Loosen the refocus ring (by rotating it counterclockwise) and confirm that the sound of

the spring peg pin and the stopper link ring pin hitting each other is heard from within the refocus mechanism.

Refocus ring

Stopper link pin on the stopper ring

Pin of the spring peg Torsion coil spring

Fig 37

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8) Remove the button bolt (#0351), and then remove the torque adjustment ring (#0328) by

rotating it counterclockwise. 9) Remove the wave washer (#332), stopper ring (#331), wave washer (#332), washer (#330),

and wave washer (#332) from the pinion housing.

Assemble the torque adjustment ring by rotating it clockwise until it reaches the limit. Install the button bolt in one of the three bolt holes. This hole should be located at a position between 3:30 and 5:30 as viewed with reference to the mounting surface (shown with the white dashed line) of the single-axis fine/coarse focus drive. By design, this poison corresponds to the maximum travel of the refocus knob. In Fig. 38, the red line indicates a position of approx. 4:00.

Fig 38

Refocus ring

Button bolt (#0351) Fig 39

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10) Pull the coarse focus knob (#301) from the single-axis fine/coarse focus drive.

When removed, the coarse focus knob has the gear case (#317) and coarse focus axis (#310) attached to it.

11) Remove the torque adjustment friction plate (#318), wave washer (#315), and torque adjustment ring (#0326). Remove the ball bearings (#338 x 2) and pinion shaft (#309) from the single-axis frame (#0323).

The torque adjustment friction plate (#318) has two projections on the inner surface as shown in Fig. 42. The rounded projection (not the flat one) must be faced toward the torque adjustment ring (#0326) when the plate is assembled.

Fig 41 Fig 40 Coarse focus knob

Torque adjustment ring

Single-axis frame

Fig 42

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12) Remove the gear mounting disc (#0308) by extracting the hexagon bolts (#355 x 2). 13) Remove the compound spur gear (#0321), compound spur gear (#0322), and spur gear

(#0319). 14) Remove the coarse focus knob (#0301) by extracting the sems bolts (#0354 x 3). 15) If the coarse focus axis (#310) needs to be replaced, secure it (using a vice, for example)

and unscrew the gear case (#0317) counterclockwise.

Fig 44

Spur gear (#0319)

Compound spur gear (#0321)

Compound spur gear (#0322)


Coarse focus knob

Fig 43 Hexagon bolts (#355x2)

Gear mounting disc

Coarse focus axis

Gear case Fig 46

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7. Disassembling/Reassembling the Elevation Block For reassembling, reverse the disassembling procedure. Thus, this section only describes main points for reassembling. 1) Before starting this procedure, make sure that the procedure down to 2-3.1) has been

finished. 2) Remove the rack (#0407) from the movable block (#402) by extracting the sems bolts

(#0455 x 3).

Install the rack by pressing its reference plane (shown with blue dashed line) onto the reference plane (show with red dashed line) of the movable block (#402).

Fig 48 Fig 49

Rack


Movable block

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3) Remove the light shielding plate (#419) by extracting the sems bolts (#0451 x 2). 4) Remove the reference block (#0415) by loosening the setscrews (#0469x2) and extracting

the hexagon bolts (#468x2).

Press the reference block onto the reference plane of the movable block (#0402) and secure with the hexagon bolts (#468 x 2). Tighten the setscrews (#0469x2) using a moderate torque since they are intended for locking.

Fig 51

Reference block Setscrews (#0469x2)

Hexagon bolts (#468x2) Fig 52

Light shielding plate


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5) Remove the stroke limiting sems bolt (#0455) from the main body of the elevation block

(#401).

6) Loosen the setscrews (#0465x3) in the main body of the elevation block (#401).

Remove the sems bolts (#0456 x 3) and washers (#0457 x 3) from the main body of the elevation block.

Fig 53 Sems bolts (#0455)

Fig 54 Setscrews (#0465x3) Fig 55

Washers (#0457x3)


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7) Remove the movable block (#0402), roller race (#0403), retainer (#405), and cylindrical

rollers (#0406). To prevent the cylindrical rollers from coming apart, we recommend holding the movable block and roller race and turning them toward you, as shown in Fig. 57.

When installing the cylindrical rollers in the roller race, place the cylindrical rollers in alternate directions as shown in Fig. 58. Move the roller race using the setscrews (#0465x3) to adjust to ensure that the movable block (#0402) moves smoothly without stiffness and unevenness. Push the movable block (#0402) using a spring balance and adjust so that the starting resistance is between 120 and 170 grams when the movable block begins to move. When the sems bolts (#0456 x 3) fastening the roller race are tightened, the smooth motion of the roller race may be lost. Therefore, repeat the above adjustment.

8) For instructions on installing the elevation block, see section 4-2, "Replacing the Elevation

Block,"

Fig 57

Fig 59 Spring balance

Fig 56

Movable block Main body of

elevation block

Roller race (#403)

Retainer Fig 58 Cylindrical rollers

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8. Adjusting the Stage Tilt The following procedure uses the NI-SS sub-stage and NI-SAM standard arm. To install the sub-stage, place its square groove on the reference guide bar of the elevation block in the ECLIPSE main body. Shift the sub-stage to the left into contact with the reference plane of the elevation block, and then secure with the three retaining screws with an anti-fallout feature. 1) Place a 1-minute reading collimator (J28005) on the eyepiece tube mount. 2) Place a 90 parallel mirror (J25552) on the sub-stage. 3) Set the collimator so that its X-direction scale is parallel with the X-axis moving direction of

the stage.

X-axis direction stage moving

X-direction

Fig 61

Parallel mirror Fig 60

1-minute reading collimator

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4) Measure the displacement of the scale image center (0') relative to the collimator center (0).

Check that the displacement is within specification. Specification: Within 1 minute each in X and Y directions If the displacement is out of specification, adjust it by following steps 5) and later. Always start the adjustment in the Y direction. If the Y-direction displacement is out of specification: 5) Identify which direction the scale image is displaced. 6) Remove the 1-minute reading collimator, parallel mirror, and sub-stage. 7) Remove the elevation block from the microscope (see Section 3-2, "Replacing the Elevation

Block"). 8) If the displacement is in direction (a):

Paste brass foils or the like on the parts of the elevation block shown in the figure below, using adhesive (#350).

If the displacement is in direction (b): Paste brass foils or the like on the parts of the elevation block shown in the figure below, using adhesive (#350).

Y-direction

X-direction

Fig 62

Scale image center (0')

Collimator center (0)

Displacement in direction (a)

Fig 63 Fig 64 If the displacement is in direction (b)

If the displacement is in direction (a)

Displacement in direction (b)

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9) Install the elevation block, and then attach the stage, parallel mirror, and collimator. 10) Check that the Y-direction displacement of the scale image is within specification.

If the displacement is out of specification, readjust it through steps 5) to 9). After the displacement is adjusted within specification, check that the X-direction displacement is within specification.

If the X-direction displacement is out of specification: 11) Loosen the sems bolts (#0088x6) that fasten the elevator block on the microscope. 12) Tilt the elevation block in the arrowed directions (Fig. 66) to reduce the X-direction

displacement within specification.

13) Tighten the sems bolts (#0088 x 6). 14) Check that the X-direction displacement is

within specification. If the displacement is out of specification, readjust it through steps 11) to 13).



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Nikon Ni-U service manual