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Kowa K9L48B Service Manual

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GG-09001
Edition 1.3
Edition 1.3
2015.4
K9L48B
Model Name

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Summary of Contents for Kowa K9L48B

  • Page 1 GG-09001 Edition 1.3 Edition 1.3 2015.4 K9L48B Model Name...

  • Page 2: Table Of Contents

    GG-09001 Edition 1.3 Table of Contents 1. Names and Functions of Components・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・P.3 2. Principles of Fundus Photography・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・P.5 ・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・ 2-1 Device overview・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.5 2-2 Fundus photography procedures・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.5 2-3 Optical principals of fundus photography・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.6 3. Block Diagram・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・...
  • Page 3 GG-09001 Edition 1.3 7. Part Replacement – Switch Panel Section – ・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・P.31 ・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・ Configuration of electric components・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.31 7-1 Replacement parts list – Switch panel section - ・・・・・・・・・・・・・・・・・・・・・P.31 7-2 Replacing left switch panel PCB・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.32 7-3 Replacing right switch panel PCB A and B・・・・・・・・・・・・・・・・・・・・・・・・・P.32 7-4 Replacing observation light intensity control and flash intensity switches P.33 7-5 Replacing camera selector switch・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.34 7-6 Replacing base unit dipswitch PCB・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・P.34...

  • Page 4: Names And Functions Of Components

    GG-09001 Edition 1.3 1. Names and Functions of Components - ４ -...
  • Page 5 GG-09001 Edition 1.3 - ５ -...

  • Page 6: Principles Of Fundus Photography

    GG-09001 Edition 1.3 2. Principles of Fundus Photography ２ ２ ２ ２ - - - - １ １ １ １ Device overview This equipment is a fundus camera which is capable of mydriatic and non-mydriatic photography with two angles of view: 50° and 30° (45° and 27° for non-mydriatic photography). You can record photographic data with 35-mm film, video and so forth.
  • Page 7 GG-09001 Edition 1.3 ２ ２ ２ ２ - - - - ３ ３ ３ ３ Optical principals of fundus photography (See the figure “Principals of Fundus Photography” on Page 7) Lighting system ① Observation lamp ⇒ Ring slit ＜Non-mydriatic photography ＞ Illumination light goes through the infrared permeable filter and filtered infrared light passes through the non-mydriatic ring slit.

  • Page 9: Block Diagram

    GG-09001 Edition 1.3 3. Block Diagram - ９ -...

  • Page 10: Wiring Diagram

    DEG.SENS.PCB ◎K9L48B sens2 K9L52 #2183 (FA/IA) led-c H10.15044.1183 PHR-12 PF65 PF64 M.BODY.CONT.PCB HK1183 BARRIER T-VSV 16/0.12mm*10C ◆ SENS K9L48B #2170 sens1 E04SR200935A （K9L52 #2170 ﾌｧｰﾑｳｪｱ変更） *HC-K9L52-0700 sens2 PHR-5 INVERTER H10-15044-1170 led-c PF74 brtc 55PW131 brti HK1170 *HC-K9L52-0720 DEG.SENS.PCB PHR-10...
  • Page 11 GG-09001 Edition 1.3 4-2 Power supply/switch panel section *HC-K9L-TB48B-0120 *HC-K9L-T48-0110 *HC-K9L-TB48B-0100 CRF21V2KJ *370FK1500A CRF22V10J *HC-K9L-TB48B-0090 350550-1 n=4 350550-1 n=4 350550-1 n=6 F614R-12MC 10 50W 2000 30W 350547-1 n=2 SCL14 JF67 PM67 330v Power Unit K9L-TB48B #2260 350778-1 350777-1 lump 12v PM 350547-1 lump gnd K9L52...

  • Page 12: Preparing For Part Replacement

    GG-09001 Edition 1.3 5. Preparing for Part Replacement Caution Caution Caution Caution Turn the power switch off and unplug the power supply cable before proceeding the following procedure. 5-1 Removing optical head unit ① Using the Allen wrench supplied with VX-10α...
  • Page 13 GG-09001 Edition 1.3 5-2 Removing optical head unit outer cover ① All outer covers of the optical head unit are removable with the optical head unit kept installed on the tilt arm. Before proceeding to any further procedure, rotate the tilting handle to tilt the optical head unit to the top position.
  • Page 14 GG-09001 Edition 1.3 5-3 Removing switch panel section ※ Remove the tilt arm and the optical head unit before proceeding to the steps below. ① Undo 4 screws from the power supply unit and remove the power supply unit cover. ②...
  • Page 15 GG-09001 Edition 1.3 ⑥ Loosen 2 screws holding the dipswitch on the rear of the right switch panel (when viewed from the controllers side) and remove the screws and the cover together. ⑥ ⑥ ⑦ Slowly lift up the panel. ※Do not apply excess force since cables are still connected.
  • Page 16 GG-09001 Edition 1.3 5-4 Exposing power supply unit ① Disconnect the external fixation lamp connector. ② Follow the procedures described in 5-3 ① and ②, and remove the power supply unit cover and the connector. ③ Undo 6 screws from the base and remove the base cover to expose the power supply unit. ①...

  • Page 17: Part Replacement - Optical Head Unit

    GG-09001 Edition 1.3 6. Part Replacement - Optical Head Unit - Configuration Configuration Configuration Configuration of of of of electric electric electric components electric components components components Motor drive PCB K9L52 #2171 Arrow view A Optical head unit main PCB K9L52 #2170 Actuators for moving mirrors *HC-K9L48-0581...
  • Page 18 55PW131 6-1 Replacement parts list - Optical head unit - Optical head unit Actuators for moving Trigger PCB main PCB mirrors K9L48B #2170 (HK1170B) K9L48 #8187 (HK1087) *HC-K9L48-0581 Ref. Page：P.19 Ref. Page：P.19 Ref. Page：P.19 Picture angle sensor Optical head unit fan...
  • Page 19 Ref. Page：P.26 Ref. Page：P.26 Ref. Page：P.28 6-11 Timer PCB 6-12 Motor for IR filter 6-13 Finder K9L48 #8188 (HK1088) *12C-123G15 K9L48B #8025 Ref. Page：P.28 Ref. Page：P.29 Ref. Page：P.29 6-14 Objective lens 6-15 Motor drive PCB 6-16 CCD unit K9L48 #8011...
  • Page 20 GG-09001 Edition 1.3 6-2 Replacing optical head unit main PCB Disconnect all connectors connecting to the optical head unit main PCB and undo 5 screws. ① Push the lock to the direction shown below, and remove the PCB. ② Install it by following the removing steps in the reverse order. ※Make sure that all connectors are securely connected.
  • Page 21 GG-09001 Edition 1.3 6-5 Replacing optical head unit fan ① Remove the tying bands. (Cut off other tying bands that connected to other cables as necessary.) ② Disconnect 3 cables from the optical head unit main PCB. JM19 JM30 JM13 FD/WD SW ③...
  • Page 22 GG-09001 Edition 1.3 ⑦ Disengage the sections attached by the upper sponge (K9L45 #551). ⑧ Undo 2 screws and disassemble the upper segment. ⑨ Undo 2 screws and remove the remaining fan (*K9L45-5087). ⑩ Install a new replacement part(s) in the reverse order of the removing procedure. Carefully read the precautions shown below before reassembling the unit.
  • Page 23 GG-09001 Edition 1.3 － － － － Optical Head Unit Fan Assembly Drawing－ － － － - ２３ -...
  • Page 24 GG-09001 Edition 1.3 6-6 Replacing WD/FD switch ① low the steps from ① to ⑥ of “6-5 Replacing optical head unit fan”, and separate the segment that holds WD/FD switch. ② Push and disengage the lock of the switch with your finger, and remove the switch. ③...
  • Page 25 GG-09001 Edition 1.3 6-8 Replacing upper mount PCB ① Undo 2 screws and remove the dust-proof cover. ② Remove the tying band shown in the picture below. ③ In order to allow cables to be easily pulled out, loosen the screws (to loosen the sheet metal that holds the cables behind it).
  • Page 26 GG-09001 Edition 1.3 6-9 Replacing lower mount PCB ① Remove the tying band. ② Undo 4 screws and remove the 35 mm mount. ③ Disconnect the connector. ④ Undo 4 screws and remove the 35 mm mount contact PCB. ⑤ Install a new PCB by following the removing steps in the reverse order, connect the connector, and tie the cables with a tying band.
  • Page 27 GG-09001 Edition 1.3 6-10 Replacing LCD monitor ① Cut off the tying band to remove the ferrite core and disconnect the cable from the optical head JM23 LCD unit main PCB ( ② Undo the screws and remove the LCD monitor. ③...
  • Page 28 GG-09001 Edition 1.3 ⑦ Remove the flat cable through the ferrite core and disconnect the cable from the PCB. ⑧ Undo the screws from the sheet metal and remove the front cover. ⑨ Peel off the ferrite core, remove the screws from the sheet metal, and separate the LCD from the sheet metal.
  • Page 29 GG-09001 Edition 1.3 6-11 Replacing LED PCB for data card ① Undo 2 screws and remove the shade cover ② Disconnect the connector (JM21 TIMER) from the optical head unit main PCB ③ Undo 2 screws, remove the capturing unit, and disconnect the connector connected to the unit ④...
  • Page 30 GG-09001 Edition 1.3 6-12 Replacing motor for IR filter ① Disconnect the connector connected to the component. ② Undo 2 screws and remove the motor. ③ Install a new motor and reconnect the connector. 6-13 Replacing finder ① Remove 2 bolts using an Allen wrench and remove the finder.
  • Page 31 GG-09001 Edition 1.3 6-15 Replacing motor drive PCB ① Remove cables from motor drive PCB. ② Loosen 3 screws and remove motor drive PCB. ③ Replace motor drive PCB and connect cables with new motor drive PCB. 6-16 Replacing CCD unit ①...
  • Page 32 7-1 Replacement parts list – Switch panel section - Left switch panel Right switch panel Right switch panel PCB A PCB B K9L52 #2258 (HK1168) K9L-TB48#8256(HK1096) K9L48B #2257 (HK1167) Ref. Page：P.32 Ref. Page：P.32 Ref. Page：P.32 Observation light Flash intensity Camera selector intensity control...
  • Page 33 ③ Insert a screwdriver into holes of the upper PCB （K9L48B #2257 (HK1167)） and undo 4 screws. Then remove both K9L48B #2257 (HK1167) and K9L-TB48#8256(HK1096) at the same time.
  • Page 34 GG-09001 Edition 1.3 7-4 Replacing observation light intensity control and the flash intensity switches ① Loosen the retaining screw located in the hole of each knob, and remove the (2) knobs. ② Disconnect the 2 cables connected to the PCB. ③...
  • Page 35 GG-09001 Edition 1.3 7-5 Replacing camera selector switch ① Disconnect the connecter connected to the PCB. ② Remove the switch while pushing the switch retaining latch using a flat-head screwdriver. When installing a new switch, make sure that the switch is positioned in the correct direction. ③...
  • Page 36 GG-09001 Edition 1.3 8. Part Replacement –Power supply– Configuration Configuration of of of of electric Configuration Configuration electric electric components electric components components components IEC60601 IEC60601 IEC60601 IEC60601- - - - 1:3 1:3ｒｄ ｒｄ ｒｄ ｒｄ Edition Edition Edition Edition Applied Applied Applied Applied...
  • Page 37 GG-09001 Edition 1.3 8-1 Replacement parts list – Power supply - Power main PCB SMPS(24V) Power supply fan SNP-Z059 *HC-K9L-TB48-0110 K9L48B #2265（HK1165） Ref. Page：P.37 Ref. Page：P.37 Ref. Page：P.37 IGBT FUSE holder Noise filter PHMB400E6 3455LS1 SUP-E15H Ref. Page：P.37 Ref. Page：P.38 Ref.
  • Page 38 GG-09001 Edition 1.3 8-2 Replacing power main PCB ① Disconnect all connectors connecting to the power main PCB. ② Undo 8 screws and remove the power main PCB. ③ Install a new power main PCB and connect the connector. 8-3 Replacing SMPS(24V) ①...
  • Page 39 GG-09001 Edition 1.3 8-6 Replacing Fuse holder ① Bend the circle part of the new fuse holder to the direction of the arrow in figure.1. 【Attention: Hold the both end of the new fuse holder, when bending.】 ② Remove the fuse holder, which is connected with brown cables, by loosening the circle part in figure.2.
  • Page 40 GG-09001 Edition 1.3 8-7 Replacing noise filer ① Disconnect four cables from the noise filter, after removing tapes which fix connectors on noise filter. ② Remove the noise filter by loosening 2 screws. ③ Connect 4 cables with the noise filter, after setting the new noise filter by screwing. 8-8 Replacing capacitors ①...
  • Page 41 GG-09001 Edition 1.3 8-10-1 Replacing trans（ （ （ （ In the case of the product is not applied IEC60601-1:3rd edition.） ） ） ） ① Disconnect cables, which belong to Trans, from power supply main PCB and terminal block, etc... ② Replace the old Trans with new one, by four screws. ③...
  • Page 42 GG-09001 Edition 1.3 ９ ９ ９ ９ . Lens cleaning 9-1 Preparing for lens cleaning <Required items> － － － － Cleaning solution－ － － － Mixed solution of 50% absolute ethyl alcohol and 50% ether. ※Other lens cleaners may leave residue after cleaning. －...
  • Page 43 GG-09001 Edition 1.3 9-2 Lens cleaning procedures ① Using the blower, blow dusts off from the lens. Air-blow cleaning is the principal cleaning method. Proceed to the steps below only when you need to remove stubborn soils that the air-blow cleaning cannot handle. ②...
  • Page 44 GG-09001 Edition 1.3 9-3 Cleaning objective lens ① Turn on POWER switch ② In order to identify soils on the objective lens clearly, reduce room’s luminance, select visible light” for Mydriatic Mode, and choose “ Illumination light. Turn the observation lamp MAX”.
  • Page 45 GG-09001 Edition 1.3 9-4 Cleaning field lens Using an Allen wrench, loosen retaining screws . If these screws are tightly locked, apply a ① few drops of the cleaning solution to loosen the screws. ② Using the handle, remove the field lens. Follow the steps described in “ 9-1 Preparing for lens ”...
  • Page 46 GG-09001 Edition 1.3 9-5 Cleaning finder ① Remove 2 bolts using an Allen wrench ② Remove the finder. Follow the steps described in “9 ” and “ -1 Preparing for lens cleaning ”. Lens cleaning procedures Reinstall the finder after cleaning. ③...
  • Page 47 GG-09001 Edition 1.3 10. Dipswitches 10-1 Lists of dipswitches Dipswitches that allow you to select detailed settings are provided on the PCB within the optical head unit, the switch panels, and the power supply unit. Although these dipswitches are already set to the optimum settings for each system configuration at the factory, you may change these settings using the lists of dipswitches below when you changes the system configuration or you want to change the settings to suit your preferences.
  • Page 48 GG-09001 Edition 1.3 Dipswitches on the side of the power supply unit Detail Intensity of the flashlight increases by one step when using the camera on the upper mount. ※1 Refer to following Light intensity control list. Intensity of the flashlight decreases by one step when using the camera on the upper mount.
  • Page 49 GG-09001 Edition 1.3 11. Troubleshooting When you encounter a problem, refer to the following list for an appropriate remedy. Please contact us when the list can not help you solve the problem successfully. Irregularity Check item Remedy Non-mydriatic Mode is wrongly selected. Switch to Mydriatic Color Mode.
  • Page 50 GG-09001 Edition 1.3 Irregularity Check item Remedy Fix the flash lamp properly. Refer to “12-3 Flash lamp is improperly fixed. Replacing with new flash lamp”. Replace with a new replacement lamp. The flashlight bulb is degrading. Refer to Flash lamp is whitened. “12-3 Replacing with new flash lamp”.
  • Page 51 GG-09001 Edition 1.3 Irregularity Check item Remedy Mydriatic Color or FA Mode is selected. Switch to Non-mydriatic Mode. Picture angle knob is fixed in incorrect Switch the picture angle knob to 50°. position. Make sure the observation lamp turned Observation lamp is turned OFF. Does “EXT button”...
  • Page 52 GG-09001 Edition 1.3 Irregularity Check item Remedy Remove the green filter when using FA Buzzer does not stop Optional green filter is inserted when FA Mode. Select Mydriatic Color Mode, sounding. Mode is selected. when performing red-free photography. When you turn off the power switch, wait Power switch was repeatedly turned ON for ten seconds before turning it ON again.
  • Page 53 GG-09001 Edition 1.3 Irregularity Check item Remedy A white dot(s) appears at Clean the objective lens. Refer to “9. The objective lens is fouled with dusts. same location(s) Lens Cleaning” within a picture. Clean the objective lens. Refer to “9. The objective lens is fouled with tears.
  • Page 54 GG-09001 Edition 1.3 12. Maintenance/Inspection We recommend you to have this system inspected biannually to use this system safely for a long time. Precautions for part replacement Always turn the power switch OFF and unplug the power supply cable before proceeding to ・...
  • Page 55 Data card Fuse K9L33＃225 0218010.MXP Small, slow blow Chin rest paper K9L-TB45＃102 Chin rest paper Observation lamp K9L52 A26 K9L-TB45＃101 retaining pin Flash lamp Dust cover K9L9 FU3A ＦＴ5＃520Ｉ ※ Refer to “K9L48B PARTS LIST” for other parts. - ５５ -...
  • Page 56 GG-09001 Edition 1.3 14. Additional information 13-1. How to step for incorrect information of left or right 13-1-1. How to check ① Put the model eye on the chin rest. Make the direction of the model eye to face the front of the optical head unit.
  • Page 57 16.6V±0.5V SNP-Z059（24V） 13-2-2 High voltage of the K9L48B #2265(HK1165) [Caution: Wait for 10 minutes or later after unplugging the power plug from socket. And then connect the probe of the voltmeter with PCB. Otherwise , there may occur electrical shock.]...
  • Page 58 GG-09001 Edition 1.3 13-3 Adjustment of the black point glass unit ① Remove the covers according to “5-2. Removing optical head cover”. ② Remove cables from motor and sensor PCB, and then remove inner cover by loosening 2 screws. ③ Turn on the power switch and rotate “observation light intensity control knob” to maximum, after connecting cables with motor and sensor PCB.
  • Page 60 : medicalde@kowaoptimed.com E-mail : life@kowa.co.jp : http://www.kowamedical.com : http://www.kowa.co.jp/e-life Medical Devices Division Kowa Company, Ltd. Chofu Factory 3-1, Chofugaoka 3-chome, Chofu, Tokyo 182-0021, Japan 20001 South Vermont Avenue, Torrance, CA 90502, U.S.A. Phone : +1(310)327-1913 Facsimile : +1(310)327-4177 Kowa Company, Ltd. Hamamatsu Factory E-mail : Kowa-usa-info@kowa.com...