Huvitz HLM-7000 User manual

Auto Lensmeter HLM-7
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Service Manual
Auto Lensmeter HLM-7000

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AUTO-LENSMETER
INDEX
1. INTRODUCTION..............................................................................4
1.1. COMPONENTS LIST........................................................................................................................4
1.2. REPAIR PROCEDURE ......................................................................................................................6
1.3. CAUTIONS .....................................................................................................................................7
1.4. SOFTWARE 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....................................................................................................................11
2.3. HOW TO SET 12 STANDARD LENSES.............................................................................................12
2.4. HOW TO SET PRISM .....................................................................................................................13
2.5. HOW TO SET DIOPTER PRISM ......................................................................................................15
2.6. THE CALIBRATION OF THE CYLINDRICALAXIS .............................................................................17
2.7. THE TO SET PD............................................................................................................................18
2.8. THE TO SET UV ...........................................................................................................................19
2.9. DIOPTER SETTING VARIABLES LIST.............................................................................................20
2.10. HOW TO CHANGE THE CCD CAMERA ...........................................................................................21
2.11. HOW TO CHANGE THE LEDASSEMBLY........................................................................................23
2.11. HOW TO CHANGE THE LEDASSEMBLY........................................................................................24
2.12. HOW TO CHANGE THE PINHOLE HOUSING ....................................................................................25
3. REPAIR STANDARD......................................................................26
3.1. REMOVING COVER ASSEMBLY .....................................................................................................26
3.2. DISASSEMBLING LCDASS’Y.......................................................................................................28
3.3. REMOVING PRINTER ASS’Y..........................................................................................................30
3.4. REMOVING PDASSEMBLY ...........................................................................................................32
3.4.1. REMOVING PD-BAR SUBASSEMBLY ........................................................................................34
3.5. REMOVING UVASSEMBLY...........................................................................................................36
3.6. REMOVING MOVEMENT ASSEMBLY .............................................................................................38
3.6.1. REMOVING MOVEMENT(LEFT)SUBASSEMBLY........................................................................41
3.6.2. REMOVING MOVEMENT(RIGHT)SUBASSEMBLY......................................................................43
3.7. REMOVING GEAR ASSEMBLY .......................................................................................................45

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3.8. REMOVING MAIN BOARD ASSEMBLY ...........................................................................................47
3.9. REMOVING BACK BONE ASSEMBLY ................................................................................................49
3.9.1. REMOVING LENS HOUSING BONE AND LED SUBASSEMBLY...................................................51
3.9.2. REMOVING CCD CAMERAASSEMBLY .....................................................................................53
3.10. REMOVING SMPSASSEMBLYAND POWER S/WAND FUSE INLET ...........................................55
4. ELECTRICALSYSTEM ................................................................57
4.1. MAIN BOARD PCBASS’Y......................................................................................................57
4.2 ELECTRICAL BLOCK DIAGRAM.....................................................................................................58
4.3. INSPECTING SMPS......................................................................................................................59
4.3. LCD TEST..................................................................................................................................60
4.4. LED TEST..................................................................................................................................61
4.5. UVMODULETEST..................................................................................................................62
4.6. PD TEST.....................................................................................................................................63
4.7. THERMALPRINTER TEST .....................................................................................................64
5. HOW TO UPGRADE THE OS PROGRAM.................................65
5.1. INTRODUCTION............................................................................................................................65
5.2. HOW TO UPGRADE THE OS PROGRAM USING DNWAPPLICATION IN HLM MACHINES ................66

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AUTO-LENSMETER
1. Introduction
1.1. Components List
Figure 1. Components Names (I)
LCD Display
Key Button
Memory Button
Marker Lever
Printer Cover
Table Lever
Lens Table
UV Cover
Lens Holder
Lens Supporter
PD Sensor

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Figure 2. Components Names (II)
Figure 3. Components Names (III)
Power Switch
Power Connector
Foot Switch
Connector

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AUTO-LENSMETER
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. Software OS version
Software OS version will be shown on 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.
Transmit Part
zCollimator Lens: makes parallel light.
zPinhole : disperses parallel light into several signals. Prevent the other

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AUTO-LENSMETER
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