LENSMETERModel LM-770 OPERATOR’S MANUAL NIDEK CO., LTD. (Manufacturer) : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan Telephone: (0533) 67-6611 Facsimile: (0533) 67-6610 NIDEK CO., LTD : 6th Floor, Takahashi Bldg., No.2, 3-chome, Kanda-jinboucho (Tokyo Office) Chiyoda-ku, Tokyo 101-0051, Japan Telephone: (03) 3288-0571 Facsimile: (03) 3288-0570 Telex: 2226647 NIDEK J NIDEK INCORPORATED : 47651 Westinghouse Drive, Fremont, California 94539, U. S. A. (United States Agent) Telephone: (510) 226-5700 Facsimile: (510) 226-5750 NIDEK SOCIETE ANONYME : Europarc 13, rue Auguste Perret, 94042 CRETEIL, France (Authorized Representative) Telephone: (01) 49 80 97 97 Facsimile: (01) 49 80 32 08 June 2006 30283-P902E Printed in JAPAN BEFORE USE, READ THIS MANUAL. This manual contains information necessary for correct and effective operation of NIDEK Projection and Digital type Lensmeter Model LM-770, and provides procedures for operation, cautions, specification, and procedures for maintenance. In this manual, IEC 60601 is applied. The lensmeter complies with ISO 8598 (Optics and optical instruments - Focimeters). For correct use, it is necessary that this manual, in particular the operating procedures, be thoroughly understood before using this instrument. Keep the manual handy to verify use. There are no user-serviceable parts inside the instrument except lamps, fuses, printer papers and ink cartridge. If you find any problem or question about the instrument during the operation, please contact your authorized distributor. The LM-770 is calibrated with reference wavelength of 587.56 nm. Table of Contents §1 INTRODUCTION ........................................................................................................Page 1-1 1.1 Outline ...................................................................................................................... 1-1 1.2 Indications for Use ................................................................................................... 1-1 1.3 Classifications ........................................................................................................... 1-1 1.4 Symbol Information .................................................................................................. 1-2 §2 SAFETY ........................................................................................................................ 2-1 2.1 Operation .................................................................................................................. 2-1 2.2 Storage ..................................................................................................................... 2-2 2.3 Transference ............................................................................................................. 2-2 2.4 Installation ................................................................................................................ 2-2 2.5 Wiring ....................................................................................................................... 2-3 2.6 After Use .................................................................................................................. 2-4 2.7 Maintenance and Checks .......................................................................................... 2-4 2.8 Disposal .................................................................................................................... 2-4 2.9 Labels ....................................................................................................................... 2-5 §3 CONFIGURATIONS ................................................................................................... 3-1 §4 OPERATING PROCEDURES .................................................................................... 4-1 4.1 Basic Process of Operation (SPH, CYL Lenses) ...................................................... 4-1 4.2 Prior Measurement ................................................................................................... 4-4 4.2.1 Preparation ...................................................................................................... 4-4 4.2.2 How to set the lens .......................................................................................... 4-4 4.3 Measurement ............................................................................................................ 4-5 4.3.1 Measurement of single vision lens ................................................................... 4-5 4.3.2 Measurement of ADD diopter ......................................................................... 4-6 4.3.3 Measurement of prism refractive power .......................................................... 4-7 4.3.4 Measurement of hard contact lens ................................................................... 4-9 4.4 Marking Axis .......................................................................................................... 4-10 4.4.1 Making sphere lens ........................................................................................ 4-10 4.4.2 Marking cylinder axis .................................................................................... 4-10 4.4.3 Marking phoria lens ....................................................................................... 4-11 4.5 Memory Function ................................................................................................... 4-12 4.5.1 How to memorize .......................................................................................... 4-12 4.5.2 How to display the contents of memory ........................................................ 4-12 4.5.3 How to clear the memory .............................................................................. 4-13 4.6 Print out .................................................................................................................. 4-13 4.7 Setting Step and Changing the Setting of CYL Reading ........................................ 4-14 4.7.1 How to set the step ....................................................................................... 4-14 4.7.2 How to set CYL reading ............................................................................... 4-14 ............................................. 5-4 5.................................................5 Cleaning of Protective Glass....................3 Replace the Ink Cartridge .................................................................................. 5-5 §6 SPECIFICATIONS ........... 5-1 5................................................................4 Replace the Printer Paper .............. 6-1 ............................................................. 5-4 5............................................. 5-3 5..............................................................................................................................................6 Cleaning Exterior .............. 5-1 5..8 Auto-off Function .............. 5-2 5..................1 Replace the Lamp ........................................... 4-15 §5 MAINTENANCE ..............................Page 4..........................................................................................................................................................................................................2 Replace the Fuses ......................... [This page is intentionally left blank.] . 1.3 Classifications [Classification under the provision of 93/42/EEC(MDD)] Class I The LM-770 is classified into Class I device. • Auto-off function gives longer life time of the lamp and save energy of electricity. . • Maximum measurable lens diameter is up to 100mm. but which includes an additional safety precaution that provides for a connection of accessible conductive parts to the protective (earth) conductor in the fixed wiring of the installation. The features is • Measured refractive powers and axis are displayed digitally and easy to read. • Measured refractive powers and axis can be printed out. The Type B Applied Part provides an adequate degree of protection against electrical shock. The measurement results are shown in the data of sphere power. [Degree of protection against electric shock] Type B Applied Part The LM-770 is provided with a Type B Applied Part.allowable leakage currents . Also. accessible conductive parts cannot become activated in the event of failure in the basic insulation. and to verify the correct mounting of lenses in spectacles frames. Therefore. axis angle. addition (ADD) power and prism power. This instrument projects the target brightly and sharply on the screen. easy and accurate lens measurement is possible.2 Indications for Use This equipment is designed to measure vertex powers and prismatic effects of spectacle and contact lens. • By the equipment of big screen. The class I equipment is an equipment in which the protection against electric shock does not rely on basic insulation only. 1. cylinder power. bright and sharp target can be obtained.1 Outline NIDEK MODEL LM-770 is a projection and digital type lensmeter which is developed for more users to use the product of high performance.reliability of the protective earth ground connection (If applicable). to orientate and mark uncut lenses. [Form of protection against electric shock] Class I The LM-770 is classified as a Class I equipment.§1 INTRODUCTION 1. particularly regarding the following: . • Measured value of left and right lenses in frame can be put in memory and also can be printed out. . Avoid water splash on the equipment. This symbol indicates that this product shall be disposed of in a separate collection of electrical and electronic equipment in EU. This symbol means the fuse rating.4 Symbol Information This symbol on the body indicates that caution should be taken. This symbol on the power switch indicates that the power is OFF. [Method(s) of sterilization or disinfection recommended by the manufacturer] The LM-770 does not have any part to be sterilized or be disinfected. This symbol on the power switch indicates that the power is ON. Do not use near flammable materials. This symbol indicates the output. [Operation mode] The LM-770 is classified as an equipment which operates continuously. This symbol indicates the input. [Degree of protection against flammability] The LM-770 is classified as an equipment not suitable to be used in a potentially flammable environment. 1.1 -2 [Degree of protection against liquid entry] IP20 The LM-770 is classified as a ordinary equipment (IP20). Refer to the operator’s manual before use. This symbol indicates that the alternating current should be applied to the instrument. This symbol indicates that the degree of protection against electrical shock of the applied part is classified as a Type B applied part. which is provided with an enclosure not completely water proof. This symbol indicates the date of manufacture. do not touch the inside of the instrument. This can weaken the metal core of the cord and may result in a short circuit or an electric shock. Immediately replace the cord. or cord/plug gets so heated that one cannot hold it.§2 SAFETY In this manual. may result in minor or moderate injury or property damage. If not. This may result in an electric shock or instrument malfunction. . • Do not place the instrument on the power cord. This may cause an electric shock or a fire. NIDEK will not be responsible for accidents or malfunction caused by carelessness. The sheath of the cord becomes ragged and may cause an electric shock or a short circuit. 2. • In the event of a malfunction. • If the metal core of the power cord is exposed.1 Operation CAUTION • Never disassemble or touch the inside of the instrument. whose definitions are as follows. • Never yank the power cord to disconnect from wall outlet but hold the plug while disconnecting. CAUTION: Indicates a potentially hazardous situation which. Be sure to observe the instructions of CAUTION. it means that the cord is damaged. a Signal Word is used to designate a degree or level of safety alerting. but unplug the power cord and contact your authorized distributor. you may get burned. • Do not use the instrument for other than the intended purpose. • Do not touch the lamp house cover since it is hot while a lamp is illuminated. if not avoided. power turns on and off by shaking the cord. Even the cases mentioned in CAUTION may result in serious injury under a certain situation. there is the possibility of electrical shock or instrument malfunction. . humidity. be sure that the nosepiece is mounted correctly. 2. 2. To preserve the appearance or internal parts of the instrument. Incorrect mount of the nosepiece may on accuracy of measurement. hold the instrument surely with both hands. • Avoid storing the instrument in an area with excessive heat.2 Storage NOTE • Do not store the instrument in a place where it may get wet or where poisonous gas or liquid is stored.2 -2 NOTE • Before measurement. 2.3 Transference CAUTION • Never trail the power cable during the transference. and take care not to bump onto other instruments. walls and others. avoid direct exposure to sunlight. or dust. The instrument may fall down and cable may break when it is stepped on or pulled. If water gets into the internal structure. • In transference.4 Installation CAUTION • Do not install the instrument near water. Careless transference may cause injury or malfunction. • Be sure to securely plug in the interface cable. • Be sure to use a power outlet equipped with a grounding terminal. The instrument may not perform observation correctly or may malfunction. Otherwise. A low dust environment A low light interference environment A vibration and shock free environment • Install the instrument in the environment whose condition can be set to the following. Insecure connections may cause malfunction. Insecure connections may cause a fire. • Be sure to securely plug in the power cord. . Malfunction or a fire also may occur.5 Wiring CAUTION • Be sure to use the wall outlet which meets the requirements of power specification. this may cause electric shock when it breaks or power leaks. Use the instrument under the following temperature and humidity. it may result in possible injury. NOTE • Install the instrument in the following conditions.2-3 CAUTION • Install the instrument in a stable and level place where vibration or shock does not occur. If the line voltage is too high or too low. the instrument may not give full performance. Use environment Temperature : +10 to +40 ºC Humidity : 30 to 85% (non-condensing) 2. if the instrument is tripped over because of any accidental shock. Also. disconnect the power cord from the wall outlet. 2. This may cause a fire. NOTE • Disassembling for service is not permitted except at NIDEK or authorized distributor. If not. you may get burned.8 Disposal NOTE • Follow local governing ordinances and recycling plans regarding disposal or recycling of device components. 2. settled dusts may impair visibility through the instrument. sort them by the materials and follow local governing ordinances and recycling plans. This may ruin the surface. .2 -4 2. replace it when it is cool. • Never use an organic solvent such as paint thinner to wipe the exterior. NOTE • If the instrument will not be used during an extended period of time. turn off the main switch and put the dust cover over the instrument.6 After Use CAUTION • If the instrument is not be used for a long time. • When disposing packing materials. If not.7 Maintenance and Checks CAUTION • As the illumination lamp can get quite hot. 2-5 2.9 Labels The following labels provide safety information about each part. . 2 Screen & Digital display] Target Corona target Cross line target Indicator .§3 CONFIGURATIONS [Fig.1 Front view] Screen Digital display Prism compensator Diameter measuring scale Lens Table Nosepiece Sign changeover switch +/Target rotating ring S/C measuring changeover switch ADD diopter switch Right switch Left switch Print switch [Fig. it returns to original display. replace this for nosepiece of contact lens. S/C measuring changeover switch Each pressing this switch change the SPH or CYL measuring mode. diameter of lens can be read.2) Target It is consisted from corona and cross lines targets. Also returning to SPH measuring mode from ADD measuring mode or memory display mode.2) According to this indicator. can be made by this switch. measure the lens by focusing either short or long cross lines target. Right switch Left switch These switches are used to memorize the left and right measured values in the framed lens. (Refer Fig. Prism compensator In case measuring lens with over 5 prism diopter. this prism compensator is used not to go off the target from the field of view of screen. (Refer Fig. nor to be distorted. moving volume is also changed.2) Indicator In case measuring cylinder lens. touch the top part of frame to the lens table. Lens table When measuring lenses in frame. In this mode. In case measured values are in the memory. direction of moving target is changed and by rotating the knob. are printed out and returns to SPH measuring mode. it displays to which side of cross lines target is focused. Sign changeover switch +/This is used when opposite cylinder value is desired to be read against the display of measured values. (Refer Fig. Also after memory.3-2 Screen It is graduated with 1 prism diopter step concentric circle scale and 5º step angle scale. . By pressing this switch again. CYL display at digital display part is changed to ADD display. measured values which are displayed at digital display part. Print switch By pressing this switch. This works also as feeding printer paper by continuous pressing. Nosepiece This is a basic point of measurement. it returns to SPH measuring mode. contents of memory are printed out and memory is erased. therefore special plastic material is used not to give any scratches on lens. When measuring contact lens. ADD and AXIS are displayed on this part. (Refer Fig. By moving the prism compensator knob for left or right. Diameter measuring scale By touching lens edge to the lens table. ADD measuring switch By pressing this switch. CYL (cylinder). Target rotating ring By rotating this ring.2) Digital display Measured values of SPH (sphere). angle of target can be changed. it makes ADD measuring mode. 4 Rear view] Printer cover Exterior interface connector Power source connector Lamp adjusting screws .3 Side view] Axis marking lever Lens holder lever Lens Table Lever Diopter handle Lens holder Main switch Ink cartridge [Fig.3 -3 [Fig. plastics are provided at the tips of lens holder. Power source connector Both fuse holders and voltage selector are provided. there screws are used. some movement can be made. raise this lever a little to release the click and down the lens holder to hold the lens. Printer cover Lens holder To avoid giving scratches on the lens. IEC 60601-1.3-4 Axis marking lever This is used for marking axis on the lens. Ink cartridge Lens table lever Lens table moves back and forth by this lever.) Further more all configurations shall comply with the system standard IEC 60601-1-1. Lens holder lever In the state no holding lens. . Diopter handle Main switch Exterior interface connector Accessory equipment connected to the analog and digital interfaces must be certified according to the representative appropriate national standards (for example. After measurement of the lens. If in doubt. and is therefore responsible that the system complies with the requirements of the system standard IEC 60601-1-1. Everybody who connects additional equipment to the signal input part or signal output part configured a medical system. After setting the lens. if part of target becomes dark or target blurs along with flowing when in defocus. Lamp adjusting screws After replacing lamp. the lever is raised up until it get click sound and fixed at upper part. consult the technical service department or your local representative. Raise the lens holder lever at upper end once and then down it to hold the lens. When focusing target. * If the corona target flows. Put the lens. 3. CYL Lenses) NOTE • Before measurement.1 Basic Process of Operation (SPH. facing its concave side on the nosepiece. 5.00.§4 OPERATING PROCEDURES 4. Put the main switch “ON” by pressing “ ” marked side.5) Fig. Incorrect mount of the nosepiece may on sccuracy of measurement. Move the lens to coincide the center target to the screen center. 2. Also confirm that target is in the center of screen. confirm that SPH value is 0. proceed to “8”.6 . (See Fig. Fig. 1. be sure that the nosepiece is mounted correctly.5 4. Turn the diopter handle target on the screen to make corona in sharp focus. (Refer Fig.7) 7. Press down the axis marking lever to print the marks. * Proceed to “16”.4-2 6. Turn the target rotating ring and align the short cross lines target in parallel to corona flow lines. Fig. Fig. * Center point shows the optical center. * SPH value is displayed at digital displayed part.9 .9) ”. * Display of indicator changes to “ (Refer Fig. Make fine adjustment by the diopter handle to get sharp focus of the target. Press the S/C measuring changeover switch . (Refer Fig.8) 9. Fig. it changes to CYL measuring mode with beep sound. Turn the diopter handle and make the short cross lines target in sharp focus.7 8.8 10. (Refer Fig. (Refer Fig. flickering indicator has nothing to do with.10 * SPH. Fig. it returns to SPH measuring mode with beep sound. Fig.10) * If indicator flickers. Turn the diopter handle and make the long cross lines target in sharp focus. Turn the lens and coincide its focus to the long cross line target. 13.12 . rotate either the target or line for 90º and return to the SPH measuring mode by pressing S/C measuring changeover switch.10) 12. CYL and AXIS are displayed on the digital display . Turn the target rotating ring and coincide the axis value displayed on digital part to the prescription value. (Refer Fig.4 -3 11. Then proceed over again from the process “5”. However in case not mark axis. (Refer Fig. Remove the lens. Coincide the lens center to the target and mark the axis by pressing down the axis marking lever.11 15. Fig. Hold the lens by hand and raise the lens holder lever up until it gets click sound. Press the S/C measuring changeover switch .12) 16.11) 14. 17. 2 How to set the lens In case measuring lenses in frame. Confirm that scale of prism refractive power on the prism compensator show “0”. 2. Power source cord is firstly connected to LM-770 and then to the socket.13 4.2. touch the top part of frame to the lens table and hold it by lens holder.2 Prior Measurement 4. . Lens table comes out by pulling the lens table lever this side. (Refer Fig.2.4-4 4.13) Scale of prism refractive power Fig.1 Preparation 1. CYL and AXIS on the digital display. and read SPH value on the digital display when the target is in the sharp focus. .of measured CYL value can be changed by sign changeover switch. Indicator displays long lines mark and turn the diopter handle to make the long cross lines target in sharp focus. Then change it to CYL measuring mode by S/C measuring changeover switch. Further reading of +/. In case sphere lens.1 Measurement of single vision lens 1. 2. corona target flows in a cylinder. Confirm that indicator shows the short lines mark ( ) and turn the diopter handle to get sharp focus to the short cross lines target. NOTE • While in measuring astigmatism lens.3 Measurement 4. whole target get sharp focus. If indicator shows long lines mark ( ). Align the short cross lines target in parallel to the direction of flowed lines and make it in sharp focus. Then measuring is now finished. indicator may flicker. Coincide center of the lens. If the lens astigmatism.4 -5 4.3. change it by S/C measuring changeover switch. But if axis marking is not made. this has nothing to do with. Now read the values of SPH. .14) Fig. this is used to see how much refractive power for near vision is added on the refractive power for far vision. Fig. After measuring far vision of refractive power. (Refer Fig.4-6 4. use the prism compensator and bring the target to the center of screen to enable getting better sharp focus.1. raise the lens holder lever a little up. * Lamp at ADD on digital display part is lit and it becomes ADD measuring mode. Focus the cross lines target to the side shown by indicator NOTE • If the target dose not come to the center of screen due to the effect of prism of the lens. 2. input refractive power of far vision by pressing ADD measuring switch and the difference is displayed by the standard basing on it. (See Fig.3.2 Measurement of ADD diopter When measuring bifocal lens.15) NOTE • When shift the lens.3. Measure the far vision part of the lens in the process stated in 4. Shift the lens to come its near vision part (small lens) on the nosepiece.14 3. SPH values for vision and ADD are displayed. * On the digital display. [Process] 1. Press the ADD measuring switch.15 4. Then put the lens on the nosepiece to come the mark on the center of nosepiece. a. Range from 5 prism diopter to 15 prism diopter. then it makes easy reading of the angle scale. let the patient wear the glass and mark the each center of pupil. 2.16) 3Δ Base 200º Fig.. Range from 15 prism diopter to 20 prism diopter. c. Within 5 prism diopter which can be read on the scale of screen. b. In case range within 5 prism diopter. use the prism compensator. Read the volume of shift and direction of the target center from the center of screen. (Refer Fig. Turn the diopter handle and make focusing of the target.3 Measurement of prism refractive power Measuring of prism refractive is divided in three ranges. [Process] 1.4 -7 4. and c.3. When measuring prism refractive power in framed lenses.16 . a. For the case of b. Shifted volume in the scale of concentric circles is the prism refractive power and direction read on the angle scale is the direction of prism base. * If you turn the target rotation ring to go the center line of long cross lines target through the center of screen. 4. Turn the diopter handle and display the expected SPH value on the digital display.17 3Δ Base 70º . 2.17) NOTE • If the scale of prism refractive power is indicated in orange color.4-8 b. 3. By the prism refractive power scale and angle scale of prism compensator. Fig. read each prism refractive power and direction of prism base. Operate the prism compensator knob and coincide the center of target accurately to the center of screen. direction of prism base is the value of angle scale plus 180º. In case range within 15 prism diopter. set the angle scale of prism compensator at 0º or 90º and turn the prism compensator knob. Operate the knob of prism compensator and bring the center of target to the center of screen. It makes easy finding the target. 5. Turn the diopter handle to focus the target. (Refer Fig. [Process] 1. NOTE • If the target is not in the screen. 4 -9 c.3.18 4. Then measurement can be made easily. NOTE • By using prism compensator and bring the target in the center of screen. 15 prism diopter of the prism compensator must be added. Fig. . [Process] 1. d. On this read value.4 Measurement of hard contact lens Measurement of hard contact lens can not be made by using normal nosepiece. (See Fig. Please change it for nosepiece exclusive for contact lens. This total value is the prism refractive power of the measuring lens. In case range over 15 prism diopter. Measure both cylinder and prism refractive prism. Turn the diopter handle and display the expected SPH value on the digital display. 4. Coincide the scale of prism refractive power of prism compensator at 15 prism diopter and move the knob for left or right. Stop the movement of target when its center comes to the nearest position to the screen center and read the prism refractive power by the scale of concentric circle as stated “a”. 5. target crosses in the screen.18) 3. 2. Direction of prism base is read at the angle scale of prism compensator as explained at “b”. In case measuring astigmatism lens with prism. * In case marking on cylinder axis. 2. 4. measure the lens. Repeat measuring again from process “5”. 4. Press down the axis marking lever and print 3 point on the lens in parallel for lens table. . 4. Turn the lens to focus for the long cross line target. rotate the lens or target 90º and return to SPH measuring mode.1 Making sphere lens 1. According to the “4. Focus the target and adjust lens position to coincide the target center to the screen center. 2. In this moment.4 Marking Axis This is used show the center of optical axis (by the center of 3 points marks) and also to show direction of axis and base for cylinder lens etc. Make centering lens and press down the axis marking lever to print axis.4 . to the angle of axis marking. 3.4.2 Marking cylinder axis 1.1 Basic process of operation”. coincide to the prescribed value. Turn the target and coincide the axis which displayed on digital display. coincide to “0” and in case marking on prescribed value.10 4. if the indicator flickers.4. Make axis marking in the process of “4.4. 3. .3 Marking phoria lens 1. Set the lens.4. Shift the target center for the direction of prism refractive power (base direction +180º) by prism compensator.4.4 .1” or “4.2”. 2.11 4. 4.5. only memorized data can be transmitted.2 How to display the contents of memory While in SPH measuring mode.1 How to memorize Measure the lens after confirming the LED of right/left switches are “OFF”. by pushing the said switches. by pressing LED lit switch RIGHT/LEFT. press further ADD measuring switch. measured data can be memorized. it returns to SPH measuring mode.12 4. contents is changed. (Memory display mode) When you want to read out the result of ADD measurement.5. LED is lit. If you press the memorized switch again. 4. Also in the case memory display mode. After taking measurement. * When measured value are memorized. * Memory is one each for left and right. Also when measured value are memorized. memorized contents are displayed.5 Memory Function This is the function to memorize the measured values of left and right lenses in the frame and display these data separately or print these data out continuously.4 . Therefore such data must be memorized in advance. In other modes. NOTE • Memory display function is only effective when it is in SPH measuring mode. . Also in order to transmit the data to exterior system ophthalmic instrument. indicator is “OFF” and displayed side LED of the switch is flickered. Further. 4. if you press the print switch. when printing is out. or ADD measuring mode. memorized contents of both right and left can be erased. (In case including a printer.5. Also in case measured value are memorized by RIGHT/LEFT switches. memorized data should be erased in advance and then measure. it returns to SPH measuring mode from CYL measuring mode.13 4. memorized contents are erased after the contents are printed out.6 Print out By pressing PRINT switch. by pressing PRINT switch memorized contents are printed out. . Also. measured data displayed on the digital display part are printed out. if you press the switch again.3 How to clear the memory When memory is displayed. or memory display mode.4 . and memorized contents are erased. the contents of displayed memory can be erased.) In case measurement is made newly. 14 4.25D step. 1.20 about DIP switches.19. 2. 2.4 .2 How to set CYL reading Setting of CYL readings (Plus reading. 1.Readi ng ON OFF + Readi ng OFF ON Mi x Readi ng ON ON Fig. put the DIP switch of No. NOTE • Do not touch other DIP switches. Refer Fig. SW-1 SW-2 . Fig.7. Once put the power source switch “OFF” or press CYL measuring switch. 3. NOTE • Do not touch other DIP switches.7.3 “ON” makes 0. CYL reading can be set by changing DIP switch position as bellows. Open the printer cover.20 . Open the printer cover.1 How to set the step Displayed step of refractive power can be changed by the following process. Refer Fig.7 Setting Step and Changing the Setting of CYL Reading 4.19 4. Minus reading and Mix reading) can be made by the following process.12D step and put it “OFF” makes 0. 8 Auto-off Function Auto-off function works when the lensmeter is not used about three minutes. Fig. (Refer Fig.4 .21) Memorized data are not erased even if the lensmeter is in auto-off state.21 Auto-off state . To return.15 4. press one of any switches or rotate either diopter handle or target rotating ring. 3. CAUTION • In replacement of the lamp. Otherwise. if the part of target on the screen becomes dark or target blurs with flow when it is in defocus. An electric shock may occur. do not touch the inside of the instrument. . Lamp 2. hold it with cloth. CAUTION • As the illumination bulb can get quite hot.1 Replace the Lamp 1. Pull the lamp out from the lamp socket. Fig. Remove the bottom lamp house cover. 5.22 Do not hold glass part of lamp by naked hand. 4.§5 MAINTENANCE 5. it may cause an injury. After replacement of lamp. Set the new lamp in the process of opposite order. adjust it by turning lamp adjusting screws at the brightest. Put the main switch off and pull the power cord out from socket. replace it when it is cool. the instrument may malfunction and may cause a fire. Contact your authorized distributor. CAUTION • Be sure to use the correct fuses specified on the label beside the fuse folder. it may cause a fire or malfunction. If the voltage setting dose not match the supplied power voltage. do not touch the internal structure. . Fixing lip CAUTION • The fuse holder is also used as a voltage selector. Voltage indication window Fig. Replace the fuses. be sure to replace both of them with the new ones. If the wrong fuses are used. Push both sides of the fuse holder with a thin screwdriver to release the fixing lips.2 Replace the Fuses 1. Fixing lip 2. and pull the holder out.23 3. Replace the fuses and set the fuse holder back into position. • When replacing the fuses.5-2 5. • If the fuse blows again. Be careful not to change the numbers show in the voltage indication window. Remove the fuse folder. Put the main switch off and pull the power cord out from the socket. Marker holder Ink cartridge Spring Fig. and fit the C ring between the screw and ink cartridge.25 2.5-3 5.5 . 3.27 Screw . Use a specified cartridge for refills. Attach the screw removed in preceding step to a new ink cartridge. take care to prevent a possible loss of the C ring. * The head of screw must be 0.26 4. (Using a tweezers can avoid a loss of the C ring when attaching it. 1. Fig. replace the ink cartridge. Remove the screw from disattached ink cartridge with a precision phillips screwdriver. Insert the spring and the new cartridge into the marker holder.3 Replace the Ink Cartridge When markings become faint. take care to prevent possible loss of them. Fig.) C type ring Fig. * During work.24 * As a spring and cartridge are fallen out when the C ring is removed.1mm outside from the cartridge. Remove the C type ring by pressing a tip of the ink cartridge. Protective glass Fig. Nosepiece 2.28 • Once printer paper is feeded. Open the printer cover. NOTE Fig.28) 3. wipe it off with a soft cloth or lens cleaning paper gently.29 .4 Replace the Printer Paper When printer paper is exhausted. Pass the printer paper through the exit of the printer cover and closed the cover.5 Cleaning of Protective Glass Periodically. The tip of printer paper is inserted through the shot. 1. detach the nosepiece and remove the dust and dirt on the protective glass. 4. do not pull the paper for opposite direction. Blow dust off on the protective glass with a blower brush and then. (Refer Fig.5-4 5. 2. 1. Remove the nosepiece upward. replace it with new one. 5. Keep pressing PRINT switch and feed the printer paper. Finally wipe off with a dry and soft cloth. For stubborn dirt.5-5 5. wring well and wipe. wipe with a dry and soft cloth. immerse the cloth in a neutral detergent. NOTE • Never use an organic solvent such as paint thinner to clean the instrument as it may ruin the surface of the instrument. .6 Cleaning Exterior When the exterior parts of the instrument become dirty. 25D steps : : : 0 to 180º 1º steps ±1º Measuring range : Measuring unit Accuracy : : 0 to 5Δ 0 to 20Δ (in case using prism compensator) 1Δ steps Addition power Measuring range Measuring unit Cylindrical Axis angle Measuring range Measuring unit Accuracy Prism diopter power Values in prism diopters() Measuring range >0 ҇5 >5 ҇10 Accuracy 0.25D steps Cylinder power : +.87D 0. Cylinder.87D 0. Axis.12 ± 0.12 or 0.Sphere.1 0. – or MIX : : 0 to ±9.25D steps Values in diopters(D) Measuring range < 0҈ -5 > 0҇+5 < -5҈ -10 > +5҇+10 < -10҈ -15 > +10҇+15 < -15҈ -20 > +15҇+20 < -20 > +20 Accuracy ± 0.12 or 0.Magnification 40X Digital display .12 or 0.09 ± 0.18 ± 0.§6 SPECIFICATIONS Type : Projection type . ADD Measuring target Sphere power : Cross-line and corona Measuring range Measuring unit Accuracy : : : 0 to ±25D 0.06 ± 0.25 Cylinder power Measuring range Measuring unit : : 0 to ±9.2 . 120. 230Vac ± 10% 50/60 Hz 40VA : 165(W)×315(D)×420(H)mm 7kg Temperature : Humidity : +10 to +40 ºC (In usage) -40 to +70 ºC (In storage/Transference) 30 to 85 % (Non-condensing) (In usage) 10 to 100 % (In storage/Transference) Accessories : Measurable lens diameter Illumination lamp Power source Voltage Frequency Power consumption Dimensions and weight Environmental condition Spare lamps (1 pc.6-2 Prism Axis angle Measuring range Measuring unit : : 0 to 360º 1º steps : 9 to 100mm : 6V 20W G4.) Printer paper (1 pc.) Dust cover (1 pc. 220.) .) Nosepiece for contact lens (1 pc. Halogen lamp : : : 100.