Topcon CL-300 Repair Manual
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Topcon CL-300 Repair Manual

Computerized lensmeter
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REPAIR MANUAL
ISSUED ............... MAR. 2012
REVISED ............
COMPUTERIZED LENSMETER
CL-300
TOPCON CORPORATION
R-CV5000-0-0701-00
R-CL300-0-1204-02

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Summary of Contents for Topcon CL-300

  • Page 1 REPAIR MANUAL ISSUED ....MAR. 2012 REVISED .... COMPUTERIZED LENSMETER CL-300 TOPCON CORPORATION R-CV5000-0-0701-00 R-CL300-0-1204-02...

  • Page 2: Table Of Contents

    CONTENTS Page 1. GENERAL ............................. 1 1-1 Features of the Product ......................1 1-2 Specifications of the Product ....................1 1-2-1 Measuring Range and Minimum Units ................1 1-2-2 Diameter of the Lens to be tested .................. 1 1-2-3 Contact Lens ........................1 1-2-4 Measurement Pixels .......................
  • Page 3 2-4 Measurement Principle ......................13 3. REPAIR WORKS ........................15 3-1 FACTORY MENU ......................... 15 3-1-1 SELF CHECK ....................... 16 3-1-2 CCD POSITION ......................24 3-1-3 DPT/UV CORRECT ..................... 25 3-1-4 AXIS CORRECT ......................27 3-1-5 PRISM CORRECT ....................... 28 3-1-6 PD CORRECT ......................

  • Page 4: General

    1. GENERAL 1-1 Features of the Product This computerized lensmeter CL-300, which uses the non-imaging system with the two-dimensional CCD, is proud of a high-speed excellent operability at a low price, where the LCD with the back light has been employed.

  • Page 5: How To Use This Manual

    Disassembly & P31~39 Assembly Procedure Searching for the Cause P41~44 Trouble Shooting Disassembly & P31~39 Assembly Procedure Repair P45~47 Assembly and Adjustment Procedure  SELF CHECK P15~23 Inspection CCD POSITION Normal   Measurement Principle CL-300 Basic Data   − 2 − R-CL300-0-1204-02...

  • Page 6: Precautions

    When the CCD PCB is to be replaced, be careful about scratch, dust or dirt on the CCD. 1-6 ROM Version Display Usually, when the power to the instrument is turned ON, the “TOPCON” logo mark is displayed first, and then the following image is displayed.

  • Page 7: Initial Menu

    1-7 INITIAL MENU (1) Turn ON the power switch and press the setup button at the bottom of the measurement screen. Setup button (2) The setup menu screen appears. Press “SPECIAL”. (3) Enter the password “0015”. PassWord 0015 Caps Space Cancel −...

  • Page 8: Wavelength

    Ten languages can be selected for the data on the screen. They can be changed from one to another by setting “LANGUAGE” For more information, refer to the separate sheet “TRANSLATION OF MENU SCREEN FOR CL-300”. 1-7-3 RS-232C Normally, select “NORMAL”.

  • Page 9: Barcode

    1-7-5 BARCODE ON → When selected, the barcode is printed when other values except “0000” are entered for “MENU/SEQ.NO./SET,” and the measured values for both the right and left eyes are to be printed under the stored condition. OFF → When selected, the barcode is not printed. 1-7-6 MACHINE NO.

  • Page 10: Pd Unit

    1-7-11 PD UNIT The PD function is set up in this selection box. ON → When selected, “PD” image is added in the MENU screen and the use of PD value display can be selected. OFF → When selected, the use of the PD value display cannot be selected. 1-7-12 PRINT CLEAR ON →...
  • Page 11 SPECIAL MENU table Item Initial setting Japan d LINE WAVELENGTH e LINE e LINE d LINE e LINE e LINE e LINE e LINE ENGLISH JAPANESE SPANISH(TMS) SPANISH(TE) CHINESE LANGUAGE DANISH ENGLISH JAPANESE ENGLISH CHINESE ENGLISH ENGLISH FRENCH GERMAN ITALIANO SWEDISH PORTUGUESE NORMAL...

  • Page 12: Product Outline

    2. PRODUCT OUTLINE 2-1 Nomenclature Nose rest Port cover LCD (Liquid crystal display) Power LED Power switch S: ＋0.00  90  C: ＋0.00  Axis marker lever R  120  60  RS-232C S  A:    180  Lens retainer Marking ink cartridge :   0.00  Lens table 150  30 ...
  • Page 13 (A) Power Cable ...... 1 pc. (B) Lenz Protection Pad ..1 set (C) Silicon Cloth ..... 1 pc. (D) Contact Lens Support ..1 pc. (E) Dust Cover ......1 pc. (F) Printer Paper ..... 2 rolls (G) Instruction Manual .... 1 volume (H) AC Adaptor .......

  • Page 14: Optical System Layout And Component Names

    2-2 Optical System Layout and Component Names Name Function Name Function LED (for Emits the light with the Diffuser Plate Removes the unevenness measurement) wavelength of 540nm. of the light source. Ball Lens Condenses the LED light. 10 Dichroic Mirror Changes the route of the light.

  • Page 15: Electrical System

    2-3 Electrical System 42028 8704   42028 8600 LCD Cable J201   Measuring LED    42028 8801   42028 8400   UV LED   42028 8701   CCD Cable  42028 7200   CCD PCB     42028 7100 42028 8200 42028 8500 CPU PCB PD Sensor...

  • Page 16: Measurement Principle

    2-4 Measurement Principle CL-300 has employed the imaging system different from that in CL-2500 or the manual lens meter LM. It enables the non-imaging system by using the two-dimensional CCD. The measurement principle is described based on the following optical arrangement sketch drawing.
  • Page 17 Without lens to be tested Target Target CCD Surface Fig. 1 Lens to be tested, with the positive frequency Target Target CCD Surface Fig. 2 Lens to be tested, with the negative frequency Target CCD Surface Target Fig. 3 − 14 − R-CL300-0-1204-02...

  • Page 18: Repair Works

    3. REPAIR WORKS 3-1 FACTORY MENU Turn ON the power switch while pressing the MEMORY button. When you hear “beep”, press the MEMORY button three times or select “SPECIAL” on the setup screen. The password entry screen will appear. Enter the password and press the OK button. (Password: 0016) Press the password.

  • Page 19: Self Check

    3-1-1 SELF CHECK (1) Set the printer paper roll in the printer and insert the RS232C check tool into the RS232C connector located on the back side of the instrument. (2) Tap and determine “SELF CHECK” when “FACTORY MENU” is displayed. ROM CHECK GATE ARRAY CHECK CCD POSITION CHECK...
  • Page 20 • When an error does not occur → Nothing is displayed. (14) USB CHECK Make a folder of “¥CL-300¥PROG_DL” in the USB memory and put the file having a name of CL-300.ROM into this folder. So you can perform this check.
  • Page 21 SELF CHECK SELF CHECK ROM CHECK CPU PCB malfunctions and must be replaced. Is CHECK SUM Refer to P.31 and P.32 for correct? disassembly and assembly procedure for CPU PCB. GATE ARRAY CHECK CPU PCB malfunctions and must be replaced. ERROR G0 - G2,G4 ...
  • Page 22 CCD POSITION CHECK  CPU PCB malfunctions and must be replaced. Is ERROR Refer to P.31 and P.32 for displayed? disassembly and assembly procedure for CPU PCB. CPU PCB malfunctions and must be replaced. NO REACTION  Refer to P.31 and P.32 for disassembly and assembly procedure for CPU PCB.
  • Page 23 LCD BACKLIGHT CHECK  CPU PCB malfunctions and must be replaced. Does the Is the BACK LIGHT blink BACK LIGHT Refer to P.31 and P.32 for twice? lit? disassembly and assembly     procedure for CPU PCB. malfunctions must be replaced. Refer to P.31 and P.32 for disassembly and assembly procedure for LCD.
  • Page 24 SWITCH CHECK POWER SW PCB malfunctions Press Check and must be replaced. the power switch. ON/OFF of the Refer to P.33 for disassembly Does the BUZZER power switch. procedure for POWER SW sound? J2 1-4 PCB. CPU PCB malfunctions and must be replaced.
  • Page 25 Is the test Close the PRINTER Is the cover closed? printing done? cover. Set the paper on the Is the paper set? printer. The printer malfunctions and must be replaced. Refer to P.34 for disassembly and assembly procedure for the printer. PRINTER PCB malfunctions and must be replaced.
  • Page 26 E2PROM CHECK CPU PCB malfunctions and must be replaced. Refer to P.31 and P.32 for ERROR E0 - E3 disassembly, assembly adjustment procedure for CPU PCB. AD CONVERTER CHECK CPU PCB malfunctions and must be replaced. Refer to P.31 and P.32 for ERROR A0 disassembly, assembly...

  • Page 27: Ccd Position

    3-1-2 CCD POSITION (1) Press the CCD POSITION button on the “FACTORY MENU” screen, When “OK” is not displayed for “SELF CHECK” on the “FACTRY MENU” screen, the “CCD POSITION” operation cannot be executed. CCD Position Adjustment  90    120  60  150  30 ...

  • Page 28: Dpt/Uv Correct

    3-1-3 DPT/UV CORRECT (1) Press the DPT/UV CORRECT button on the “FACTORY MENU” screen. When “OK” is not displayed for “SELF CHECK” and “CCD POSITION”, the “DPT/UV CORRECT” operation cannot be executed. Spherical Correct  S: ＋0.00  C: −0.01  90    120  60  A:     35  :  ...
  • Page 29 (4) In the same way as the above steps (2) and (3), carry out the correction in the order of “-25D”, “-20D”, “-15D”, “-10D”, “-5D”, “+5D”, “+10D”, “+15D”, “+20D” and “+25D”. (5) When all the diopter values are corrected, the system returns to “FACTORY MENU”. If “beep”...

  • Page 30: Axis Correct

    3-1-4 AXIS CORRECT (1) Press the AXIS CORRECT button on the “FACTORY MENU” screen. When “OK” is not displayed for “SELF CHECK” and “CCD POSITION”, the “AXIS CORRECT” operation cannot be executed. S: ＋0.00  AXIS CORRECT  C: ＋0.01  90    120  60  A:    180  :  ...

  • Page 31: Prism Correct

    3-1-5 PRISM CORRECT (1) Press the PRISM CORRECT button on the “FACTORY MENU” screen. When “OK” is not displayed for “SELF CHECK” and “CCD POSITION”, the “PRISM CORRECT” operation cannot be executed. S: ＋0.00  PRISM CORRECT  C: ＋0.01  90    120  60  A:    180  :  ...

  • Page 32: Pd Correct

    3-1-6 PD CORRECT (1) Press the PD CORRECT on the FACTORY MENU” screen. When “OK” is not displayed for “SELF CHECK” and “CCD POSITION”, the “PD CORRECT” operation cannot be executed. PD CORRECT  Sensor Position  PD TOOL SET ＋35mm  EXIT  (2) When the above image is displayed, remove the lens support from the instrument and, instead, set the PD correction tool.

  • Page 33: Version Up Of Software

    (6) When “Set Lens” is displayed, set the PD correction lens onto the lens set position on the PD correction tool. (Set the correction lens with the lens surface turned up). (7) When the offset is ±0.1 or less, press the MEMORY button. When “OK!!” is displayed, press the ENTER button to finish the correction.

  • Page 34: Disassembly And Assembly Procedure

    3-4 Disassembly and Assembly Procedure 3-4-1 Cover Removal Proc. Disassembly Removal method Point for assembly Port Cover (1) Removal • Remove the port cover (1). Assemble the unit using the reverse procedure for disassembling. Cover (Left) (2) Removal • Remove the three screws (3). •...

  • Page 35: Lcd/Cpu Pcb Assembly Removal

    3-4-2 LCD/CPU PCB Assembly Removal Proc. Disassembly Removal method Point for assembly Monitor Cover (1) • Disconnect all the cables connected to the Assemble the unit using Removal CPU PCB. the reverse procedure for • Remove the four screws (2). disassembling.

  • Page 36: Power Sw Pcb Removal

    3-4-3 POWER SW PCB Removal Proc. Disassembly Removal method Point for assembly Plate (2) Removal • Remove the two screws (3). Assemble the unit using the • Remove the plate (2). reverse procedure disassembling. POWER SW PCB (4) • Remove the screw (5). Removal •...

  • Page 37: Printer Unit Removal

    3-4-4 Printer Unit Removal Proc. Disassembly Removal method Point for assembly Printer Cover (3) • Remove the two click hinges (2). Assemble the unit using Removal • Remove the printer cover (3). the reverse procedure for • Remove the two screws (5) and remove disassembling.

  • Page 38: Measuring Unit Removal

    3-4-5 Measuring Unit Removal Proc. Disassembly Removal method Point for assembly Nose Cover (Upper) (2) • Remove the cap (1). Assemble the unit using Removal • Pull the nose cover (upper) (2) to the the reverse procedure for upper direction strongly to remove (It is disassembling.

  • Page 39: Pd Unit Removal

    3-4-6 PD UNIT Removal Proc. Disassembly Removal method Point for assembly Cover (1) Removal • Remove the four screws (2). Assemble the unit using • Remove the cover. the reverse procedure for disassembling. (When you have replaced PD UNIT (5) Removal •...

  • Page 40: Memory Pcb Removal

    3-4-7 MEMORY PCB Removal Proc. Disassembly Removal method Point for assembly MEMORY PCB (2) • Remove the two screws (3). Assemble the unit using Removal • Remove the MEMORY PCB (2). the reverse procedure for disassembling. Sheet (4) Removal • Remove the sheet (4). −...

  • Page 41: Ccd/Ccd Pcb Assembly Removal

    3-4-8 CCD/CCD PCB Assembly Removal Proc. Disassembly Removal method Point for assembly Target Unit (3) Removal • Peel off the dust preventive tape Assemble the unit using the adhering the CCD cover (9) onto the reverse procedure measuring unit (1). disassembling.

  • Page 42: I/O Pcb Removal

    3-4-9 I/O PCB Removal Proc. Disassembly Removal method Point for assembly I/O PCB (1) Removal • Remove the three screws (2). Assemble the unit using the • Remove the I/O PCB (1). reverse procedure disassembly. − 39 − R-CL300-0-1204-02...

  • Page 43: Pcb Names

    3-5 PCB Names CCD PCB CPU PCB PRINTER PCB MEMORY PCB POWER SW PCB I/O PCB I/O PCB (without LAN) − 40 − R-CL300-0-1204-02...

  • Page 44: Trouble Shooting

    3-6 Trouble Shooting Turn ON the power switch. There is no change on the Checking Procedure The back light of LCD is LCD screen though the not lit. 3-6-1 Power Line Check power is ON. The LCD image is not Checking Procedure stable.

  • Page 45: Power Line Check

    3-6-1 Power Line Check (1) Remove the connector P1 from J1 of the CPU PCB, turn on the power and measure the voltage using the tester. GND 1 +5V 2 3-6-2 CPU PCB Change (1) Turn OFF the power. (2) Remove the port, left and right covers. (Refer to P.31.) (3) Remove each connector from the CPU PCB.

  • Page 46: Check For Dirty Optical System

    3-6-5 Check for Dirty Optical System Note: This work requires high-level skills and careful attention. (1) Turn OFF the power. (2) Remove the nose covers (upper) and (lower). (Refer to P.35.) (3) Remove the CCD PCB unit. (Refer to P.38.) (Take the greatest care not to give any scratch on the CCD, etc.) (4) Remove the target lens frame from the measuring unit.

  • Page 47: Printer Pcb Change

    (10) Connect the PRINTER cable to the CPU PCB. (11) Attach the port, left and right covers. 3-6-9 Communication Cable Malfunction Check (1) Connection of CL-300 and NEC PC98 series Instrument (DIP8 pins) Personal Computer (D-SUB 25 pins) (2) Connection of CL-300 and IBM PC DOS/V...

  • Page 48: Assembly And Adjustment Procedure

    3-7 Assembly and Adjustment Procedure Adjustment Point Instrument Points in Assembling for the Lens Retainer 1. Adjust the unit using the two screws “a” (4-25) not to contact with the marking unit. 2. Adjust the positions of the click and pin using the four screws “b”...
  • Page 49 Adjustment Point Instrument Points in Assembling for the Axis Marker Unit 1. Fit the holder (42036 2507) inside the arm (42039 2501), put FW4SCr (1 pc.) and polyslider 4 (1 pc.) in it as shown in Fig. 1. * At that time, apply Grease #23 on the contact surface.
  • Page 50 Adjustment Point Instrument Adjustment of 3-Needle 1. Set the 3-needle gauge as shown in Fig. 1 and 3-needel positioning move it as shown in Fig. 2 while thrusting it screw against the lens table. 3-needle vertical positioning screw 2. Adjust the center and inclination of the gauge with the one 3-needle vertical positioning screw Needle and two positioning screws.

  • Page 51: Special Tools

    4. SPECIAL TOOLS 4-1 Special Tools Tool No. Usage Tool Name Illustration Application Rank CL-02 3-needle gauge Used for adjusting the marking position. CL-09 RS232-C tool Used for the self-check of connector RS-232C. CL-11 PD correction tool Used for correcting the 42028 0200 ISO lensmeter testing Used for correcting the...
  • Page 52 Printed in Japan 1203-25TH R-CV5000-0-0701-00 R-CL300-0-1204-02...

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