Huvitz CLM-4000 User manual

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Service Manual
Auto Lensmeter CLM-4000

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INDEX
1. INTRODUCTION..............................................................................4
1.1. COMPONENTS LIST........................................................................................................................4
1.2. REPAIR PROCEDURE ......................................................................................................................6
1.3. CAUTIONS ...................................................................................................................................7
1.4. S/W OS VERSION .......................................................................................................................7
1.5. OPTICAL SYSTEM ..........................................................................................................................7
1.6. MEASUREMENT PRINCIPLE.........................................................................................................9
2. CHECKINGAND SETUP METHOD............................................10
2.1. SETUP ORDER..............................................................................................................................10
2.2. HOW TO SET ORIGIN....................................................................................................................12
2.3. HOW TO SET 12 STANDARD LENSES.............................................................................................14
2.4. HOW TO SET PRISM .....................................................................................................................16
2.5. HOW TO SET WITH 2∆AND 4∆.....................................................................................................17
2.6. –5D SETUP FOR THE PROGRESSIVE MEASUREMENT......................................................................19
2.7. THE CALIBRATION OF THE CYLINDRICALAXIS .............................................................................20
2.8. HOW TO SET THE RIGHT/LEFT SWITCHING POSITION OF PD........................................................21
2.9. DIOPTER SETTING VARIABLES LIST.............................................................................................22
2.10. HOW TO CHANGE THE CCD CAMERA ...........................................................................................23
2.11. HOW TO CHANGE THE LEDASSEMBLY........................................................................................26
2.12. HOW TO CHANGE THE PINHOLE HOUSING ....................................................................................27
3. REPAIR STANDARD......................................................................28
3.1. REMOVING SIDE COVER ASSEMBLY..............................................................................................28
3.2. REMOVING FRONT COVER(UPPER)ASS’Y....................................................................................30
3.3. REMOVING PRINTER ASS’Y..........................................................................................................32
3.4. REMOVING PDASSEMBLY ...........................................................................................................34
3.4.1. REMOVING PD SUBASSEMBLY.................................................................................................36
3.5. REMOVING BODY FRONT COVER(LOWER)ASS’Y.........................................................................38
3.6. REMOVING UVASSEMBLY...........................................................................................................40
3.7. REMOVING MOVEMENT ASSEMBLY .............................................................................................42
3.7.1. REMOVING MOVEMENT(LEFT)SUBASSEMBLY........................................................................44
3.7.2. REMOVING MOVEMENT(RIGHT)SUBASSEMBLY......................................................................46
3.8. REMOVING GEAR ASSEMBLY .......................................................................................................48

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3.9. REMOVING MAIN BOARD ASSEMBLY ...........................................................................................50
3.10. REMOVING BACK BONE ASSEMBLY ..............................................................................................52
3.10.1. REMOVING LENS HOUSING BONE AND LED SUBASSEMBLY...................................................54
3.10.2. REMOVING CCD CAMERAASSEMBLY .....................................................................................56
3.11. REMOVING SMPSASSEMBLYAND POWER COVER ......................................................................58
4. ELECTRICALSYSTEM ................................................................60
4.1. MAIN BOARD PCBASS’Y......................................................................................................60
4.2. INSPECTING SMPS......................................................................................................................61
4.3. LCD TEST..................................................................................................................................62
4.4. LED TEST..................................................................................................................................63
4.5. UVMODULETEST..................................................................................................................64
4.6. PD TEST.....................................................................................................................................65
4.7. THERMALPRINTER TEST .....................................................................................................66
5. HOW TO UPGRADE THE OS PROGRAM.................................67
5.1. INTRODUCTION............................................................................................................................67
5.2. HOW TO UPGRADE THE OS PROGRAM USING DNWAPPLICATION IN CLM MACHINES ................68

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1. Introduction
1.1. Components List
Figure 1. Components Names (I)

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Figure 2. Components Names (II)
Figure 3. Components Names (III)

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1.2. Repair Procedure
Power ON
1. Examining the Internal
Components First
2. Inspecting The value,
S.C.A. Prism
Checking
Abnormal
State
Cleaning the
Pinhole
Power off and on
Checking
Abnormal
State
Setup Again
Exit
Normal
State
Normal
State
Figure 4. Repair procedure flow chart

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1.3. Cautions
zAlways protect this instrument with Dust Cover after using.
zDo not vibrate or drop this instrument; it can cause damage.
zUse soft cloth or cotton swaps with alcohol when clean the 4 pinhole.
1.4. S/W OS version
S/W OS version will be shown on top of the screen if you turn on the
power switch.
1.5. Optical System
Optical system resolves the features of the lens such as diopter and
prism. It is composed of emitting light part, transmit part and receiving
light part: transmit part composed of collimator lens and 4 pinhole and
receiving light part composed of 2-dimentional CMOS sensor. The
followings are the components of each part:
Emitting Light Part
zOptic LED : 639nm
zBall Lens : condenses the light radiated from Optic LED.
zRubber Ring : fixes ball lens.
zFilter Paper : prevents the dispersion of light.
zPinhole : 0.2mm diameter
zLED Cylinder : combines above five components and blocks exterior
light.
VER. 1.01.01
Copyright (C) 2004-2005
Huvitz. Co., Ltd.
CLM-4000

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Transmit Part
zCollimator Lens: makes parallel light.
zPinhole : disperses parallel light into several signals. Prevent
the other light except the light source
zMLA :micro lens array. Focus the every spot.
Receiving Light Part
z2-dimentional CMOS sensor : converts signals into digital value.
Emitting light part and receiving light part also built optical system for UV
measurement. One is composed of UV lamp and the other receives UV
light. The wavelength of the UV light is 395nm.

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1.6. Measurement Principle
Basic Principle
When there is no lens (0D state), parallel light that has transmitted the
collimator lens passes the pinhole and makes image on CCD. In case of
convex lens (lens with plus diopter), parallel light that has transmitted
the collimator lens converges through the measuring lens, passes the
pinhole and then makes image on CCD. On the other hand, in case of
concave lens (lens with minus diopter), parallel light that has transmitted
the collimator lens diverges through the measuring lens and then passes
the pinholes and at last makes image on CCD.
Initial State
Concave Lens
Convex Lens

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2. Checking and Setup Method
2.1. Setup Order
When you turn on the power switch, you should hear the beep sound and
see the ROM information. At this point, press the three buttons in the
right side one after another from the rightmost one. Then, after the
beep sound, your lensmeter, CLM-4000 will start in setup and check
mode. While this mode, ‘SETUP’ mark will flicker in the left-upper area
of the centric circles. The booting steps with ‘SETUP’ mode are as
follows:
A. Turn on the power switch. Then you can hear the beep sound and
see the ROM information.
B. Press the three buttons in the right side one after another from the
rightmost one.
C. Check that ‘SETUP’ mark flickers in the left-upper area of the
centric circle.
Setting and Controlling can be processed only in SETUP mode; 0D, prism,
diopter, and right/left switching position of PD. When setting 0D or
SETUP

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diopter, you should convert the display step (STEP) into 0.01. In case of
prism, convert the prism display into P-B format. Display step (STEP)
and prism display format can be changed in ‘User Setup’ screen. To
enter the mentioned ‘User Setup’ screen, press the ‘MODE’()
button for a while (2~3 seconds) in the basic display screen.

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2.2. How to Set Origin
Press the ‘CLEAR’() button for a while (2~3 seconds). And then
press the ‘MEASR’ button. Next, determine the lens to measure (0D) by
using left two arrow buttons in the following screen. Go ahead and
calibrate by using two arrow buttons in the right side. When setting is
completed, press the rightmost ‘SAVE & QUIT’ button to save and exit.
The steps of setting origin are as follows:
A. Press the ‘CLEAR’() button for a while (2~3 seconds).
B. Press the ‘MEASR’ button for a while.
C. Determine the lens to measure by using two arrow buttons in the
left side.
D. Calibrate by using two neighboring arrow buttons in the right side by
the given value in the standard model-eye specification.
E. To save and exit, press the rightmost ‘SAVE & QUIT’ button.
F. Press the ‘SAVE & QUIT’ button again. And check if the diopter
that has been set up in the basic display screen is shown.
Buttons for Selecting Diopter Buttons for Calibrate Diopter SAVE & QUIT button
‘SAVE SCREEN INFORMATION’ is as follows:

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If you want to return to the previous one without saving in the SAVE
screen, press the leftmost button to render the order of sixth row ‘-1th
(Dip : -30)’. And then press the ‘SAVE & QUIT’ button.
SAVE SCREEN INFORMATION
-CEN : (+398.1073, +239.6215) : Center of the four points
-LEN : +156.33 : Average distance between the center
of the four points and the four points
CON : 1.00, 1.00, 1.00, 1.00 : Difference rate of the distances
between the four points
ANG : -0.01, +0.00, -0.00, -0.0099 : Rotational error of each four points
-6th, DIP : +0.00 : Saving order and the saved diopter

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2.3. How to Set 12 standard lenses
If the measured value is not accurate, you should set the diopter
variables again by using the standard lens-set: for all the 12 lenses in the
standard lens set. Always keep the standard lens clean out of dust or
stain.
A. Set the diopter display step into 0.01.
B. Place the standard lens and move it so that ‘Marking OK’ will appear
and the prism X and Y become 0.
C. Press the ‘CLEAR’() button for a while.
D. Press the ‘MEASR’ button.
E. Using the two arrow buttons in the left side, set the diopter to the
value of the lens to measure.
F. Go ahead and calibrate by using two arrow buttons in the right side
by the given value in the standard model-eye specification.
G. To save and exit, press the rightmost button.
H. Repeat the procedures from A to F for 12 standard lenses.
I. Finally, don’t forget to press the ‘CNCT’() button at the
second page for a while.
J. After setting diopter, return the diopter display step to 0.25.

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The information displayed in the ‘Setting Diopter’ screen is the same as
that of ‘Setting 0D’ screen. After finishing setting up 12 lenses, press
the ‘CNCT’() button for 2 seconds.

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2.4. How to Set Prism
You should set it up again if the prism readings are incorrect. And, When
you especially calibrate 5∆ and 10∆ lens, you should place it ‘NOW PRISM
BASE : 270’ in the ‘Prism Setup’ screen.
A. First, convert prism display format into P-B.
B. After selecting the 2∆ lens from the standard lens set, place it on
the lens cap.
C. Then, press the ‘CLEAR’() button for a while.
D. Press the ‘DISP’ button for a while.
E. Press the ‘CAL’ button and check if ‘DISTANCE’ value is changed.
F. After selecting the 5∆ lens from the standard lens set, place it on
the lens cap. Especially, you should place it ‘NOW PRISM BASE :
270’.
G. Press the ‘CAL’ button and check if ‘DISTANCE’ value is changed.
H. After selecting the 10∆ lens from the standard lens set, place it on
the lens cap. Especially, you should place it ‘NOW PRISM BASE :
270’.
I. Press the ‘CAL’ button and check if ‘DISTANCE’ value is changed.
J. Press the ‘SAVE’ button
K. Press the ‘QUIT’ button.
L. Press the ‘QUIT’ button again to return to the basic display screen
and check the prism value.
M. Finally, return the prism display format to X-Y.
‘Prism Setup’ screen will show the following information:
-DIOPTER : 2 Prism, 5 Prism, 10 Prism
-DISTANCE : Distance between the origin, 0D and the center of the
current four points
-NOW PRISM BASE : Display prism base currently.

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2.5. How to Set with 2∆and 4∆
This calibration is for enhancing the measurement accuracy for the
peripheral area. We should use the 2∆ and 4∆ lenses. 4∆ lens is not
included in the standard lens set. So, you can get it from the
manufacture or you can use one in the trial lens set. But it should be
around 4∆ such as –3.8∆ ~ 4.2∆.
A. First, change the Prism Display as the P-B.
B. Press the ‘MODE’() button to go into the Basic Display II at
the Basic Display I.
C. Place the 4∆ lens on the lens supporter.
D. Rotate it the Base value equal 1deg.
E. Then, press the ‘D-SUN’() button to store some information.
F. Rotate it to become the Base value increase by the 22 or 23 deg.
G. Then, press the ‘D-SUN’() button to store some information.
H. Repeat From Step F ~ to Step G to the Base value equal to 337
deg or 338 deg.
I. The all spots that should be marked are as the table at the next
page.
J. Repeat From Step D ~ to Step H with 2∆.
K. Press the ‘EXIT’() button to go back to the Basic display I.
L. Press the ‘CLEAR’() button for a while to go into the
Calibration Display.
M. Press the ‘CHECK’ button for a while and then Prism Compensation
Information Display appears.
N. Press the first button to calculate the appropriate coefficients.
O. Press the second button to calculate the ratio between 4∆ and 2∆.
P. Finally the ‘SAVE’ button to save.

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Make sure that all spots with 4∆ and 2∆ should be marked. Otherwise, the
system could be halted during the next procedures. The marked spots
could be checked through the printed-out data.
Prism Base
1
st 1°
2
nd 22° or 23°
3
rd 45°
4
th 67° or 68°
5
th 90°
6
th 112° or 113°
7
th 135°
8
th 157° or 158°
9
th 180°
10th 202° or 203°
11th 225°
12th 247° or 248°
13th 270°
14th 292° or 293°
15th 315°
16th 337° or 338°

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2.6. –5D setup for the progressive measurement
For measuring the accurate for the high powered progressive lens, it is
needed to calibrate with –5D lens, which you can get easily the normal
glass store. The procedures are as followings :
A. Locate the lens to the center.
B. Push or pull the lens vertically. Don’t move the lens horizontally.
As a result, the horizontal prism power should be less than ±0.1.
C. At 10 spots, press the ‘TRNS’() button. The criteria for the
10 spots is shown in the below table. At every time, you can see
the recorded information through the thermal printer.
D. After recording the information of 10 spots by pressing ‘TRNS’
() button, finally press the ‘TRNS’() button for a
while.
Prism X Prism Y
1
st I0.05 ~ O0.05 around U4.50
2
nd I0.05 ~ O0.05 around U3.50
3
rd I0.05 ~ O0.05 around U2.50
4
th I0.20 ~ O0.20 around D10.7
5
th I0.20 ~ O0.20 around D10.2
6
th I0.20 ~ O0.20 around D9.50
7
th I0.20 ~ O0.20 around D7.50
8
th I0.20 ~ O0.20 around D5.50
9
th I0.20 ~ O0.20 around D3.50
10th I0.20 ~ O0.20 around D0.00
Make sure that the 10th spot must be marked and then make the ‘TRNS’
() button for a while. Otherwise the readings of the progressive
lenses might be incorrect.