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LUMENIS Selecta II Service Manual

Nd:yag ophthalmic laser system
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Selecta II
Nd:YAG Ophthalmic Laser System
SERVICE MANUAL
3959 West 1820 South Salt Lake City, UT 84104 USA
(877) 586-3647
P/N 0641-234-00 Rev. F

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Summary of Contents for LUMENIS Selecta II

  • Page 1 Selecta II Nd:YAG Ophthalmic Laser System SERVICE MANUAL 3959 West 1820 South Salt Lake City, UT 84104 USA (877) 586-3647 P/N 0641-234-00 Rev. F...
  • Page 2 This manual is copyrighted with all rights reserved. Under the copyright laws, this manual cannot be copied in whole or in part without the express written permission of Lumenis, Inc. Permitted copies must carry the same proprietary and copyright notices as were affixed to the original.
  • Page 3 Department at Lumenis – (877) 586-3647. Lumenis does not accept responsibility for personal injury or property damage resulting from the servicing of Lumenis equipment by its customers or by third parties, except where such injury or property damage is a direct result of Lumenis' negligence.

  • Page 4: Revision Information

    Revision Information Each page of the Selecta II Nd:YAG Ophthalmic Laser System Service Manual is marked with a part number and revision level at the bottom. A Technical Note or Field Change Order placed in Section 7 typically describes minor changes or updates to the system, parts list, or service procedures.

  • Page 5: Table Of Contents

    Optical Alignment Energy Meter Calibration 3-13 Theory of Operation Introduction Power Distribution Cooling Control Electronics High Voltage Power Supply 4-42 Optics 4-43 Software 4-45 Troubleshooting Overview Interior Access and Part Location Selecta II Service Manual Table of Contents 0641-234-00 Rev. F...
  • Page 6 8-31 Remote Control Panel 8-33 Flex Cables 8-35 Figures and Tables Figure 1-1: Component Identification Figure 1-2: CE Mark Label Figure 1-3: Electronics Module Labels Figure 1-4: Optical Head Labels Selecta II Service Manual Table of Contents 0641-234-00 Rev. F...
  • Page 7 Figure 4-18: Motor Drive Circuit 4-39 Figure 4-19: Aiming Diode Laser Control Circuit 4-40 Figure 4-20: Remote Control Display Panel Circuit 4-41 Figure 4-21: Selecta II Optical Path 4-45 Selecta II Service Manual Table of Contents 0641-234-00 Rev. F Figure 5-1: Side Cover Removal...
  • Page 8 Table 5-5: 0642-979-01 Controller Board Test Points 5-27 Table 5-6: Detector Gain Table for 532nm 5-30 Table 5-7: Motor Control Board Test Points 5-31 Table 5-8: High Voltage Power Supply Board Test Points 5-32 Selecta II Service Manual Table of Contents 0641-234-00 Rev. F...

  • Page 9: General Information

    Lumenis, Inc. cannot be responsible for service or repairs attempted by uncertified persons, and the use of this manual by such persons is prohibited. This manual is to be used in conjunction with the Lumenis Operator Manual for the Selecta II Nd:YAG laser. The operator manual contains important information regarding instrument description, location of controls, specifications and normal operating procedures.

  • Page 10: Serial Number Format

    Figure 1-1: Component Identification 1.3 Serial Number Format The serial number for the Selecta II Nd:YAG laser is designated with an “S” followed by four-digit number (i.e., S1001). The serial number is located on the back of the electronics module.
  • Page 11 The energy UP/DN buttons on the Remote Control panel. • Identification of removable portions of protective housings. Refer to Section 5. • Below are illustrations of required labels and warnings applicable to this Service Manual: Selecta II Service Manual General Information 0641-234-01 Rev. F 1 - 3...

  • Page 12: Figure 1-3: Electronics Module Labels

    CLASS IV LASER PRODUCT per 21 CFR 1040 *Theoretical Limit Interlock CAUTION ELECTRIC SHOCK HAZARD DO NOT REMOVE COVER, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Figure 1-3: Electronics Module Labels General Information Selecta II Service Manual 1 - 4 0641-234-01 Rev. F...

  • Page 13: Models And Configurations

    Laser Aperture Figure 1-4: Optical Head Labels Models and Configurations The Selecta II laser can be configured to operate on 110Vac or 220Vac supply voltage. See Section 2 for information on configuring for either of these voltage ranges. Safety Precautions The following sections describe general safety issues regarding the use of the Selecta II Ophthalmic Laser system.
  • Page 14 System Safety Measures Considerable thought has been given during the design of the Selecta II Ophthalmic Laser system, to maximize safety for both patient and operator. Following are some of the Selecta II Ophthalmic Laser system safety features: ...

  • Page 15: Optical Safety

     Exposure to excessive laser radiation may result in permanent damage to the eyes and skin.  The Selecta II Ophthalmic Laser system emits intense visible laser light. Prior to laser activation, always make sure that everyone in the room is protected against accidental exposure to this emission either directly from the treatment head or indirectly from a reflecting surface.

  • Page 16: Electrical And Mechanical Safety

    Procedure.” Electrical and Mechanical Safety  No one other than Lumenis authorized service personnel may repair any part of the Selecta II Ophthalmic Laser system within the protective covers. This includes making modifications or internal adjustments to the power supply, optics, cooling system, power calibration, delivery systems, etc.

  • Page 17: System Specifications

    Class 2 Type Diode (semiconductor) Wavelength 635nm Power Settings variable up to 999µW Beam Delivery: Laser Delivery Coaxial with slit lamp viewing optics Spot Size 400µm (532 and 635nm) Selecta II Service Manual General Information 0641-234-01 Rev. F 1 - 9...
  • Page 18 ** Marco Ultra G5 mount part number from Lombert Instruments – SL1M1187. The new Haag-Streit lamp will not work with the Selecta II. The tower will interfere with the Selecta II safety filter and does not allow for the slit lamp swing.

  • Page 19: Installation And Operation Information

    Selecta II Nd:YAG Ophthalmic Laser system. The Lumenis Selecta II Nd:YAG Ophthalmic laser is shipped in a wooden crate. Crate dimensions are 115cm (45”) long x 89cm (35”) wide x 102cm (40”) high. When packed in the crate, it weighs approximately 41kg (90lbs.), and with the system out of the crate...

  • Page 20: Figure 2-1: Haag-Streit Slit Lamp

    1.6X Figure 2-1: Haag-Streit Slit Lamp Note: The Selecta II can be attached to the Haag-Streit slit lamp or to adaptations of the Haag-Streit slit lamp. Refer to the Table 1-2 for the compatible slit lamp models that can be used with the Selecta II system.

  • Page 21: Figure 2-2: Voltage Selection Switch And Fuse Holder

    5. Check the site line voltage to determine the proper setting for the Voltage Selection Switch. Refer to Figure 2-2. (Rear View of Selecta II Electronics Module) Insert a thin blade screw driver here to access the fuses and voltage...

  • Page 22: Figure 2-3: Voltage Selection Switch

    6. Verify SW4 on the 0631-805-01 Controller PCB [SW3 on 0642-979-01 Controller Board] is in the proper configuration. Since the Selecta II is almost identical to the EPIC YAG laser system, be sure SW4-3 [SW3-3] on the Controller PCB is turned on and all other switches are turned off.

  • Page 23: Figure 2-4: Sw4 On 0631-805-01 Controller Board

    Figure 2-4: SW4 on 0631-805-01 Controller Board Figure 2-5: SW3 on 0642-979-01 Controller Board Selecta II Service Manual Installation Instructions 0641-234-02 Rev. F 2 -5...

  • Page 24: System Operation

    The customer may elect to install a remote switch (door interlock device) to monitor the treatment room door where the Selecta II is used. If the interlocked door is opened, the system will not enter the “Ready” state and will not emit treatment laser light. The remote interlock plug (a 3-pin mini DIN connector) must be connected to a customer supplied door switch, where the switch is closed when the door is closed.

  • Page 25: Periodic Maintenance

    If the Selecta II system will be used in more that one room, or at different sites, it is recommended to leave the original “jumped” interlock plug with the console, unless all sites have been wired with a remote switch. Extra remote interlock plugs are available for purchase, p/n 0629-587-01.

  • Page 26: Operational And Safety Checkout (Service Technician)

    2.6 Operational and Safety Checkout (Service Technician) The system check out procedure confirms that the Selecta II laser is functioning correctly. 1. Turn the system on and allow it to go through the self-test. If the system fails to pass the self-test, check the error messages/code information as to why the system failed during self-test.
  • Page 27 START position then let go of the key. (Be sure the key moves to the ON position) and the “LASER EMISSION” is clearly visible on the Remote Selecta II Service Manual Installation Instructions 0641-234-02 Rev. F...
  • Page 28 Head cover. Slide the cover up far enough to expose the shutter assembly. 8. Move the safety shutter by hand. Confirm that Fault 49 is displayed on the Remote Control Display. Installation Instructions Selecta II Service Manual 2 - 10 0641-234-02 Rev. F...
  • Page 29 Remote Control displays a “F26”. 10. Slide the Optical Head cover down and reinstall the two button head screws at the bottom left/right slides of the Optical Head cover. Selecta II Service Manual Installation Instructions 0641-234-02 Rev. F 2 -11...
  • Page 30 (This page intentionally blank) Installation Instructions Selecta II Service Manual 2 - 12 0641-234-02 Rev. F...

  • Page 31: Alignment, Adjustment And Calibration

    The Service Manual is subject to revision and is supplemented by Technical Notes, and Field Change Orders (Section 7) as issued by Lumenis Service Department Technical Support. To determine if this service manual is up to date, contact Lumenis Technical Support at (877) 586-3647.

  • Page 32: Safety Precautions

     Only Lumenis certified service technicians should attempt any service on the Selecta II Nd:YAG Ophthalmic Laser system.

  • Page 33: Optical Alignment Procedure

    Adjusts the treatment/ aiming beams horizontally Focuses the treatment/aiming beams to optical focus Adjusts the treatment/ aiming beams vertically Figure 3-1: YAG Head External Beam Controls Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F 3 - 3...

  • Page 34: Beam Alignment

    NOTE: When aligning the YAG beam using the YAG alignment tool, a burn pattern of four quadrants and of equal intensity must be seen in every case throughout the optical path. Refer to Figure 3-3. Alignment Adjustment and Calibration Selecta II Service Manual 3 - 4 0641-234-03 Rev. F...

  • Page 35: Figure 3-2: Yag Head Component Layout

    Insert the YAG Alignment Tool into the top side aperture hole. Pick-off (BS4 & BS5) Energy Detectors 532/1064nm Fold Mirror Outside View Figure 3-2: YAG Head Component Layout Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F 3 - 5...

  • Page 36: Figure 3-3: Centered Burn Pattern

    Verify the beam is centered on the aiming beam. If not, adjust M3 and or M4 until the beams are coincidental. ( Far Field) NOTE: The further away step C is done the better. Alignment Adjustment and Calibration Selecta II Service Manual 3 - 6 0641-234-03 Rev. F...

  • Page 37: Figure 3-5: Aiming Beam Alignment Step

    The Aiming Beam at the M4 Position Horizontal Adjustment Lock Down Collar Figure 3-5: Aiming Beam Alignment Step 1. Set the aiming beam to maximum brightness. Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F 3 - 7...
  • Page 38 L6. c. Repeat this step until adjustments are no longer necessary through the alignment tool and on the YAG burn four feet away. Alignment Adjustment and Calibration Selecta II Service Manual 3 - 8 0641-234-03 Rev. F...

  • Page 39: Figure 3-6: Alignment Step

    400µm spot size at optical focus and the aiming beam focus is adjusted to a 400µm spot size at the frequency doubled Nd:YAG focus. 3.2.4.1 Frequency-Doubled Nd:YAG Defocus Check Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F...
  • Page 40 Set the magnification to maximum c. Focus on the paper target by moving the slitlamp. d. Lock the slitlamp location e. Set the magnification to minimum. Alignment Adjustment and Calibration Selecta II Service Manual 3 - 10 0641-234-03 Rev. F...

  • Page 41: Figure 3-7A Dioptron Card Burn Dimensions

    Ave. diameter of 3 spots 3 Spots at 1.5mJ 380 to 420 microns 3 Spots at 0.5mJ 330 to 370 microns 3 Spots at 0.3mJ >300 microns Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F 3 - 11...

  • Page 42: Energy Meter Calibration

    “specified” 400micron spot size. 6. Verify all previous alignments, including the aiming beam focus. If necessary, perform Subtopic 3.2.3 to refocus the aiming beam. 3.3 Energy Meter Calibration Alignment Adjustment and Calibration Selecta II Service Manual 3 - 12 0641-234-03 Rev. F...
  • Page 43 Service Mode. There is no “SERVICE” position for SW3 [SW2]. Note also that when the Selecta II is in Service Mode, all icons on the Remote Control Display go off. Refer to the Remote Control Display button diagram (Figure 3-8) for the specific buttons to be depressed throughout the calibration procedure.

  • Page 44: Figure 3-8: Service Mode Controls On Remote Control Panel

    Refer to Figure 3-8. The burst calibration routine may take a few minutes. Once the burst calibration routine is completed, the lower display will read “DONE’. 3. Motor 2/Attenuator Wave-plate adjustment. Alignment Adjustment and Calibration Selecta II Service Manual 3 - 14 0641-234-03 Rev. F...
  • Page 45 (SOFF) [SAFE_OFFSET] until the DVM reads 0.00V ±.01V. For controller board 0631-805-01 return to DET GAINS service channel and select X1 gain. Confirm LEDs 18 & 19 on the Controller PCB are not illuminated. Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F...
  • Page 46 When the routine is complete, the lower display reads “OK”. i. Return to User mode by way of the Reset switch on the Controller PCB or cycle the system power off and back on. Alignment Adjustment and Calibration Selecta II Service Manual 3 - 16 0641-234-03 Rev. F...
  • Page 47 5. Fire the laser at different energy levels. Verify the delivered energy is accurate to within ±20% of requested energy over a 20 shot average. Selecta II Service Manual Alignment Adjustment and Calibration 0641-234-03 Rev. F 3 - 17...
  • Page 48 This Page Is Intentionally Blank Alignment Adjustment and Calibration Selecta II Service Manual 3 - 18 0641-234-03 Rev. F...

  • Page 49: Theory Of Operation

    4.0 Theory of Operation 4.1 Introduction 4.1.1 Operational Overview The Lumenis Selecta II Nd:YAG laser system is Q-Switched 1064nm frequency-doubled 532nm photo disruptor laser designed for use in Selective Laser Trabeculoplasty (SLT) procedures. Under physician control, the treatment laser delivers pulsed 532nm (green) wavelength energy through a slit lamp delivery device in response to the depression of an attached footswitch.

  • Page 50: Functional Overview

    Haag-Streit or Haag-Streit type slit lamp. This allows the physician to view into the eye and treat it with a 532nm YAG beam. For the purposes of this discussion, the Selecta II YAG laser is divided into the following functional subsystems.

  • Page 51: Power Distribution

    4.2 Power Distribution 4.2.1 Turn On Refer to 8-4. The Selecta II YAG laser operates off of either 100-120Vac @ 2A, 50/60 Hz or 220-240Vac @ 1A, 50/60 Hz electrical service. The mains AC voltage is wired into the line filter. The surge protector SRG1 is connected across the AC/ground lines at J36.

  • Page 52: Mains Voltage Selection

     Low Voltage Power Supply (LVPS) - A vendor supplied low voltage power supply provides ±15Vdc and +5Vdc (2) for use throughout the system. It operates from the 120Vac supply voltage from the secondary winding of the isolation Theory of Operation Selecta II Service Manual 4 - 4 0641-234-04 Rev. F...

  • Page 53: Cooling

    Cooling 4.3.1 Temperature Sensing (CPU 0631-805-01) The Selecta II system is an air-cooled system and produces a minimal of amount of heat. The microprocessor monitors the temperature in the optical head via a temperature sensing amplifier circuit on the Motor Control PCB.

  • Page 54: Control Electronics

    It includes a Motorola 68000 microprocessor and its supporting circuits - ROM, RAM, programmable timer, digital I/O, interrupt handling, clock and microprocessor bus support circuits. Described in Subtopic 4.4.1.1. Theory of Operation Selecta II Service Manual 4 - 6 0641-234-04 Rev. F...
  • Page 55 Described in subtopic 4.4.1.7. User Interface Subsystem - The Remote Control Display is the primary operator input/output interface for the Selecta II YAG laser. Described in Subtopic 4.4.1.8. 4.4.1.1 Microprocessor Refer to 8-5. The microprocessor U7 reads/writes to its memory and I/O devices over a 23-bit [16-bit] address bus and 16-bit data bus.
  • Page 56 U2 asserts an address strobe signal (/AS/) to the microprocessor and to TP5 and U1. U1 Theory of Operation Selecta II Service Manual 4 - 8 0641-234-04 Rev. F...
  • Page 57 The digital I/O chips can also output high or low logic levels to control devices such as the high voltage power supply, integrated circuits, etc. Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F...
  • Page 58  U33 reads the following analog voltages: main energy signal (MENERG) from U74-1, the capacitor voltage feedback signal (CAPVOLTFBK) from U56-6 and the safety high/low energy limit from U31-7. Theory of Operation Selecta II Service Manual 4 - 10 0641-234-04 Rev. F...
  • Page 59 Audio Amp circuit U19. The output of the circuit is connected to an external speaker that emits a tone. The speaker volume can be adjusted by adjusting R6. 4.4.1.2 Shutter/Footswitch/Remote Interlock Circuit Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F...
  • Page 60 U49-29 outputs a TRIGGEROUT signal to the +5V to +15V Logic Up Shifter (U55). U55 outputs a +15Vdc fire signal to illumine LED9 and the HVPS. Theory of Operation Selecta II Service Manual 4 - 12 0641-234-04 Rev. F...

  • Page 61: Figure 4-3: Simplified Footswitch Diagram

    LED6. If the remote interlock is disconnected, U34 turns off causing the /CDRH/ signal to go high. When the Main DIO #2 sees this high signal, the microprocessor will send a fault message to the Remote Control Display. Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 13...

  • Page 62: Figure 4-4: Simplified Remote Interlock Diagram

    U54 to output a low signal to U26. U26-12 will go high turning off the shutter circuit. When the solenoid de-energizes, /SHUTTERNC/ signal goes low causing U25-10 to go high resetting U17. Theory of Operation Selecta II Service Manual 4 - 14 0641-234-04 Rev. F...

  • Page 63: Figure 4-5: Simplified Shutter Diagram

    Figure 4-5: Simplified Shutter Diagram 4.4.1.3 High Voltage Power Supply Control Circuit Charge - When the Selecta II laser is put into READY mode. The main DIO U14 outputs a /PWRSUPEN/ signal to the input of the inverter U51-1 and RP9 drops the +5V resulting in a low input at U51-3.
  • Page 64 4.4.1.4 Energy Monitor Circuits Refer to the Energy Monitor Circuits Simplified Diagram (Figure 4-6) and to the associated schematics in Section 8. The Selecta II YAG laser measures the energy of each frequency-doubled 532nm pulse. Two separate channels measure the energy. The two channels are required to provide safety redundancy: ...
  • Page 65 P U67B +15V -15V -15V 1064/532nm Selection Control PGA2A1 PGA2A0 -15V +15V +15V SENERG U74B -15V Figure 4-6: Energy Monitor Circuit simplified Diagram 4.4.1.5 Laser Pulse Counter Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 17...
  • Page 66 (PWRSUPSNUB) to the HVPS and snub any residual energy in the HVPS and keep the laser head from firing multiple shots when not requested. Theory of Operation Selecta II Service Manual 4 - 18 0641-234-04 Rev. F...

  • Page 67: Figure 4-7A: Laser Pulse Counter (On Motor Control Board)

    Remote Control DUART /RESET/ U53B RESET LED15 LED16 LED17 Laser Fired Indicators Controller PCB RP10 RP10 RP10 0631-805-01 Figure 4-7b: Laser Pulse Counter (on Controller Board 0631-805-01) Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 19...

  • Page 68: Figure 4-8A: Snubber Circuit (On Controller Board)

    DIO #1 RANSNUBEN LOGIC UP SHIFT REGISTER TP34 SNUB SFIREINHIBIT DIO #2 TP35 HVPS RANSNUBEN EPLD U49 LED10 LED11 CONTROLLER PCB Figure 4-8a: Snubber Circuit (on Controller Board) Theory of Operation Selecta II Service Manual 4 - 20 0641-234-04 Rev. F...

  • Page 69: Figure 4-8B: Snubber Circuit (In Hvps)

    Control display. U1 provides an 11 MHz clock input to the microcontroller. U2 is an RS-232 communication port between the Remote Control display and the microcontroller. The microcontroller monitors and reports any malfunction of the electro-optical components to the microprocessor. Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 21...
  • Page 70 If a problem arose with any of the electro-optical devices, the microcontroller outputs an ERROR signal to U3. U3 outputs a low ERROR signal to the main controller PCB DIO #2 which becomes /MOTERROR/ for the main microprocessor to read. Theory of Operation Selecta II Service Manual 4 - 22 0641-234-04 Rev. F...

  • Page 71: Figure 4-9: Motor Drive Circuit

    After U1 outputs the AIMU/D signal, it then outputs the AIMDELTA signal to pin 1 of U35. The AIMDELTA signal is a predetermined series of Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F...

  • Page 72: Figure 4-10: Aiming Diode Laser Control Circuit

    4.4.1.8 User Interface Subsystem Refer to Figure 4-11. The Remote Control Display is the primary operator input/output interface for the Selecta II Nd:YAG laser. The Remote Control Display sends information to and receives operator inputs from the user. To update the Remote Control Display, the microprocessor writes information to the main dual UART controller.

  • Page 73: Figure 4-11: Remote Control Display Panel Circuit

    Refer to Subtopic 4.4.1.1 Audio Amplifier Circuit for a detail description of the circuit. 4.4.2 0642-979-01 Controller Board Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 25...
  • Page 74 Described in subtopic 4.4.2.7. User Interface Subsystem - The Remote Control Display is the primary operator input/output interface for the Selecta II YAG laser. Described in Subtopic 4.4.2.8. 4.4.2.1 Microprocessor The microprocessor U36 reads/writes to its memory and I/O devices over a 16-bit address bus and 16-bit data bus.
  • Page 75 EPLD (Erasable Programmable Logic Device). The EPLD is located on the Controller PCB. Inputs from the vendor supplied DC power supply provide the Controller PCB with +5Vdc and ±15Vdc through J5. Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 27...
  • Page 76 U19 is a dual 10-bit digital-to-analog converter. The microprocessor writes digital values to U19, which converts into two analog output voltages. The two analog output signals are labeled SAFETY_COMMAND and VOLT_COMMAND. Theory of Operation Selecta II Service Manual 4 - 28 0641-234-04 Rev. F...
  • Page 77  The system has finished it self-test routine during the initial turn-on.  The system emits a lower tone when the maximum or minimum energy settings are reached.  A low tone sound when a system error occurs. Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 29...
  • Page 78 The software reads the status of the footswitch and determines if firing is allowed or a fault condition has occurred. LED1 illuminates when the signal /FS_DOWN/ (TP4) is active low. Theory of Operation Selecta II Service Manual 4 - 30 0641-234-04 Rev. F...

  • Page 79: Figure 4-12: Simplified Footswitch Diagram

    Remote Control Display. CDRH LED3 REMOTE INTERLOCK EPLD Remote CPU 0642-979-01 Figure 4-13: Simplified Remote Interlock Diagram Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 31...

  • Page 80: Figure 4-14: Simplified Shutter Diagram

    Figure 4-14: Simplified Shutter Diagram 4.4.2.3 High Voltage Power Supply Control Circuit Charge - When the Selecta II laser is put into READY mode. The EPLD (U25) outputs a CHARGE_LV\ signal to the input of the inverter U39-9. The resulting output is high going into the shift up register U40.
  • Page 81 Energy Monitor Circuits Refer to the Energy Monitor Circuits Simplified Diagram (Figure 4-15) and to the associated schematics in Section 8. The Selecta II YAG laser measures the energy of each frequency-doubled 532nm pulse. Two separate channels measure the energy. The two channels are required to provide safety redundancy: ...

  • Page 82: Figure 4-15: Energy Monitor Circuits

    +15V Microprocessor MAIN_OFFSET +15V SAFE_10X +15V EPLD SAFE_HOLD SAFE_GRD/NDYAG/ -15V -15V SINT+ S_ENG TP24 SAFETY_ENERGY SINT- +15V SAFE_OFFSET Figure 4-15: Energy Monitor Circuits 4.4.2.5 Laser Pulse Counter Theory of Operation Selecta II Service Manual 4 - 34 0641-234-04 Rev. F...

  • Page 83: Figure 4-16A: Laser Pulse Counter (On Motor Control Board)

    TO CONTROLLER PCB U17A CR10 RP10 RP10 1mS Integrate Timer U17B -15V MINT+ TO CONTROLLER PCB MINT- MOTOR CONTROL PCB Figure 4-16a: Laser Pulse Counter (on Motor Control Board) Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 35...

  • Page 84: Figure 4-16B: Laser Pulse Counter (On Controller Board)

     A RANSNUBEN signal is generated to reset the random fire circuit in the HVPS. The EPLD U25 outputs a RAN_SNUB_EN_LV signal to the input of the +5V to +15V Logic-Up-Shifter U40. U40 then outputs a RANSNUBENB signal to the HVPS. Theory of Operation Selecta II Service Manual 4 - 36 0641-234-04 Rev. F...

  • Page 85: Figure 4-17A: Snubber Circuit (On Controller Board)

    Random Fire Snubber Circuit RANSNUBEN Lampcurr FLASHLAMP Lamp Current Monitor Circuit High Voltage Power Supply Figure 4-17b: Snubber Circuit (in HVPS) 4.4.2.7 Electromechanical and Optical Drive Circuits Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 37...
  • Page 86 The microcontroller outputs a BUSY signal while the stepper motors are in Theory of Operation Selecta II Service Manual 4 - 38 0641-234-04 Rev. F...

  • Page 87: Figure 4-18: Motor Drive Circuit

    Figure 4-18: Motor Drive Circuit Note that this simplified diagram is indicative of all the electro-optical motor drive circuits on the Motor Control PCB. Aiming Diode Laser Circuit Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 39...

  • Page 88: Figure 4-19: Aiming Diode Laser Control Circuit

    Refer to Figure 4-19 and the associated schematic in section 8. The Remote Control Display is the primary operator input/output interface for the Selecta II Nd:YAG laser. The Remote Control Display sends information to and receives operator inputs from the user.

  • Page 89: High Voltage Power Supply

    Refer to Subtopic 4.4.1.1 Audio Amplifier Circuit for a detail description of the circuit. 4.5 High Voltage Power Supply Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F 4 - 41...
  • Page 90 Gain signal is amplified again by U6, which clocks the flip-flop U10, which is asserted to the input of the OR gate U12. U12 outputs the LAMPCURR signal back to the CPU. 4.5.3 Snubber Driver Circuits Theory of Operation Selecta II Service Manual 4 - 42 0641-234-04 Rev. F...

  • Page 91: Optics

    HR and OC mirror. FOLDING MIRRORS (M1, M2) - Directs the 1064nm Nd:YAG beam through the rest of the optical path M1 and M2 is reflective to 1064nm and transmissive to 532nm. Selecta II Service Manual Theory of Operation 0641-234-04 Rev. F...
  • Page 92 532nm wavelengths and reflective to the 635nm wavelength from the laser diode. DIVERGING LENS (L5) - When the Selecta II is in frequency-doubled 532nm mode, the L5 diverging lens allows adjustments to each of the treatment beams and the aiming beam.

  • Page 93: Software

    Figure 4-21: Selecta II Optical Path 4.7 Software The microprocessor in the Selecta II Nd:YAG laser software program is written to require checks with the other processing system throughout normal operation to confirm that the two systems are in agreement concerning operating parameters, system status, etc.
  • Page 94 8. Check if the service switch is set and if so, display the service screen. 9. Perform laser test fire. a) Paint Selecta II display with parameters used last time the system was on. b) Status: Standby. c) Total energy as stored in NVRAM.
  • Page 95 11. Sound good audible indicator if power up initialization completed successfully. 12. Sound bad audible indicator if power up initialization failed. After successful system initialization, the Selecta II system shall begin normal mode of operation. START UP & SELF TEST This describes the system testing required to be performed during system initialization.
  • Page 96 8. Treatment system errors during treatment as warnings or clearable errors. NORMAL SYSTEM OPERATION This describes the required behavior for the Selecta II system during normal operation. During normal operations, the Selecta II CPU software shall perform the following ongoing activities: NOTE: Systems with the 0631-805-01 Controller Board, and Rev.
  • Page 97 5. Start and monitor laser treatment. 6. Manage audible tone generation. 7. Shut down system as needed. The Selecta II system shall remain in the normal mode of operation until one of the following occurs: System mode is activated. A system permanent error is detected.
  • Page 98 This Page Is Intentionally Blank Theory of Operation Selecta II Service Manual 4 - 50 0641-234-04 Rev. F...

  • Page 99: Overview

    Field calibration and adjustment is covered in detail in Section 3. Special purpose tools are required to maintain the Selecta II Nd:YAG laser. These tools are listed in Section 6. The entire optical path is enclosed inside the Optical Head. Removing the head covers exposes the interior to foreign matter (i.e.

  • Page 100: Interior Access And Part Location

    Servicing Engineer must be aware of the following specific precautions:  Only Lumenis certified Selecta II YAG laser Service Engineers should attempt any service on this system.  Even with the key switch in the "OFF" position, there are potentially lethal voltages present inside the electronics module.
  • Page 101 AC Control PCB (key switch and emergency stop switch). When removing the front cover, use caution to prevent stressing the cables. The Selecta II YAG laser consists of three main components:  The Electronics Module  Remote Control Display  The Optical Head...

  • Page 102: Figure 5-1: Side Cover Removal

    Side Cover Front View Figure 5-1: Side Cover Removal To gain access to the HVPS charging capacitor, isolation transformer and the LVPS, the HVPS PCB must be removed. Troubleshooting Selecta II Service Manual 5 - 4 0641-234-05 Rev. F...

  • Page 103: Figure 5-2A: Component Location, Left Side

    Speaker AC Control PCB Figure 5-2a: Component Location, Left Side Main Charging Capacitor Low Voltage Power Supply Voltage Selection Switch Main Isolation Transformer Figure 5-2b: Component Location, Left Side Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 5...

  • Page 104: Figure 5-2C: Ac Control Board

    Figure 5-2d: Flex Circuitry To Remove the Right-Side Cover - Removal of the electronics module right side cover involves first locating the four square rubber covers on each corner of the right-side Troubleshooting Selecta II Service Manual 5 - 6 0641-234-05 Rev. F...

  • Page 105: Figure 5-3: Component Location, Right Side

    Motor Control PCB, Trigger PCB, the laser diode and all other optical components. Note: Do not attempt to separate the two halves of the optical head cover. The optical head covers are assembled at Lumenis and any attempt to separate the two halves will damage the covers and must be replaced.

  • Page 106: Figure 5-4: Head Cover Removal

    Optical Head Cover Access Screws The head cover keys must ride along the Channel channels on the optical head Figure 5-4: Head Cover Removal Troubleshooting Selecta II Service Manual 5 - 8 0641-234-05 Rev. F...

  • Page 107: Figure 5-5A: Internal View Of The Optical Head (Outside View)

    (BS1, BS2) UV Filter Q Switch 50%T Filter 1064nm Blocking Filter (F3) Energy Detector Safety Shutter Shutter Solenoid Mirror (M3) Figure 5-5a: Internal View of the Optical Head (Outside View) Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 9...

  • Page 108: Figure 5-5B: Inside View Of Optical Head With Motor Control Board

    Remove the two hex head screws securing the front cover and remove. Refer to Figure 5-6. Troubleshooting Selecta II Service Manual 5 - 10 0641-234-05 Rev. F...

  • Page 109: Figure 5-6A: Front View, Laser Head

    Move left and then up Top Cover Push the left tab Front Cover Figure 5-6a: Front View, Laser Head Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 11...

  • Page 110: Figure 5-6B: Front View With Front Cover Removed, Laser Head

    Figure 5-6b: Front View with Front Cover Removed, Laser Head Troubleshooting Selecta II Service Manual 5 - 12 0641-234-05 Rev. F...

  • Page 111: Service Mode

    Figure 5-7: Front Internal View, Laser Head 5.3 Service Mode The Selecta II Nd:YAG laser includes “Service Mode” software routines. Service Mode provides the Servicing Engineer with a number of maintenance aids. Some system faults are ignored in service mode (see Subtopic 5.4.2).
  • Page 112 Remote Control to increment/decrement the different service channels, select the various operating parameters within each service channel and enable the service subroutines (i.e., burst calibration and auto-calibration). Refer to Figure 5-8. Troubleshooting Selecta II Service Manual 5 - 14 0641-234-05 Rev. F...

  • Page 113: Figure 5-8: Remote Control Panel

    Figure 5-8: Remote Control Panel 5. Verify the eight-position dipswitch (SW4 on 0631-805-01 Controller Board, or SW3 on 0642-979-01 Controller Board) is set properly for Selecta II. Figure 5-9: Controller Board Configuration Switches The following is a list of all the service channels including the operating parameters within each service screen.
  • Page 114 Fire… Degrees xx.xºC LLT RepR 1/5, 1/3, 1/2, 1, 2, 3Hz LasLTest Start USER MODE Returns to user mode SET NVRAM SURE Clears NV RAM Table 5-1: Service Channels Troubleshooting Selecta II Service Manual 5 - 16 0641-234-05 Rev. F...
  • Page 115 1. Turn off the Selecta II and disconnect the AC power cord. 2. Connect one end of the serial cable to the serial port at J3 on the Selecta II, and connect the other end of the cable to the serial port on the external computer.

  • Page 116: Fault Isolation

    3. Turn on the external computer and start the “HyperTerminal” program. a. Once the program starts the CONNECTION DESCRIPTION dialog box opens. Type a name to assign to the Selecta II connection (i.e., Selecta II) and select an icon. b. When the PHONE NUMBER dialog box appears, go to the lowest drop list (CONNECT USING) and select DIRECT TO COMx (where “x”...

  • Page 117: "No Fault Code Reported" Fault Isolation

    Permanent faults place the system in a safe, non-firing condition that cannot be cleared without restarting the system. Restarting the system will clear the fault, but if the detected condition is still present, the fault will occur again. Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E...
  • Page 118 P NVRAM checksum incorrect. System not calibrated. C +5V supply voltage wrong. Internal power supply malfunction. C -15V supply voltage wrong. Internal power supply malfunction. C +15V supply voltage wrong. Internal power supply malfunction. Troubleshooting Selecta II Service Manual 5 - 20 0641-234-05 Rev. F...
  • Page 119 Nd:YAG when it fires. If the microprocessor encounters a problem within any of these areas, the following fault codes will appear on the upper display. Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E...
  • Page 120 The Nd:YAG laser head must output greater than 10.5mJ. Clean all the optics in the optical train. If the problem persists, replace the Nd:YAG laser head. SOFTWARE ERROR (F9) - The energy calibration routine failed to work. Replace the Controller PCB. Troubleshooting Selecta II Service Manual 5 - 22 0641-234-05 Rev. F...

  • Page 121: Test Points

    5.5 Test Points Please refer to Figures 5-11 and 5-12 for the different Controller Boards that may be used in the Selecta II system. The test points are shown in Table 5-4 and Table 5-5. 0631-805-01 CONTROLLER PCB: Test Signal Name...
  • Page 122 SINT+ Integrated and amplified Safety energy signal from the differential receiver. –2mV per 1mJ @ 1064nm, and –2V per 1mJ @ 532nm. TP46 MGAIN Inverted amplified Main energy signal. Troubleshooting Selecta II Service Manual 5 - 24 0641-234-05 Rev. F...
  • Page 123 When the jumper is connected, it prevents the AC circuit from turning off. TP80 Ground. TP81 TP82 /FSDWN/ TP1000 I+5V Isolated +5Vdc. TP1001 IGND Isolated ground. Table 5-4: 0631-805-01 Controller Board Test Points Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 25...
  • Page 124 Figure 5-11: 0631-805-01 Controller Board Layout 0642-979-01 CONTROLLER PCB: Troubleshooting Selecta II Service Manual 5 - 26 0641-234-05 Rev. F...
  • Page 125 -15V power supply output is low. Active low. TP31 M_ENG Main energy signal. Test Signal Name Description Points or Code TP32 M_PGA Main energy signal output from the programmable gain Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 27...
  • Page 126 +5Vdc from the LVPS. TP56 +15V +15Vdc from the LVPS. TP57 -15V -15Vdc from the LVPS. TP58 Ground. TP59 Ground. TP60 Ground. Table 5-5: 0642-979-01 Controller Board Test Points Troubleshooting Selecta II Service Manual 5 - 28 0641-234-05 Rev. F...
  • Page 127 Figure 5-12: 0642-979-01 Controller Board Layout Energy (mJ) Gain 1 Shot/V Gain 2 Shot/V Gain 3 Shot/V Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 29...
  • Page 128 6.0V Table 5-6: Detector Gain Table for 532nm MOTOR CONTROL PCB: Please refer to Figure 5-13 for the Motor Control Board used in the Selecta II system. The test points are shown in Table 5-7. Troubleshooting Selecta II Service Manual 5 - 30 0641-234-05 Rev.

  • Page 129: Figure 5-13: 0631-808-01 Motor Control Board Layout Diagram

    SINT TP10 MTIME TP11 FIRE- 5µsec positive going signal from U17 for each laser pulse. TP12 Ground. Table 5-7: Motor Control Board Test Points HIGH VOLTAGE POWER SUPPLY PCB: Selecta II Service Manual Troubleshooting 0641-234-05 Rev. E 5 - 31...
  • Page 130 Digital output. When a high is asserted, a high voltage starter pulse breaks down the flash lamp and begins the lamp current pulse (capacitor discharge). Table 5-8: HVPS Test Points Troubleshooting Selecta II Service Manual 5 - 32 0641-234-05 Rev. F...

  • Page 131: Selected Part Numbers

    6.0 Selected Part Numbers The Bill-of-Materials for the Selecta II Nd:YAG Ophthalmic Laser system is by Lumenis Inc. Document Control, and is subject to change without notice. The following list of parts is a subset of parts, assemblies, accessories and test equipment used to produce the product and is provided for convenience.

  • Page 132: Main Components

    Power Cord w/Plug (domestic) 6005-0152 Power Cord w/o Plug (international) 6005-0153 PC Connector Dust Cap 1404-0165 Transformer (method) 0633-946-01 1 Amp Fuse 5110-0251 2 Amp Fuse 5110-0253 Selected Part Numbers Selecta II Service Manual 6 - 2 0641-234-06 Rev. F...

  • Page 133: Printed Circuit Boards

    50uF Capacitor, HVPS 1512-0915 Head Cable Assembly (new) 0643-662-01 Dr. Eye Safety Filter Assembly SP-1076560 6.3 Printed Circuit Boards AC Control PCB 0632-511-01 HVPS/PFN PCB 0632-608-01 Selecta II Service Manual Selected Part Numbers 0641-234-06 Rev. F 6 - 3...

  • Page 134: Software/Epld

    Head PCB (new) 0643-656-01 Supply, Low Voltage 4001-0194 New Controller PCB, w Software SP-1076570 Selecta II CPU Upgrade, FRU KTS702020 Trigger Board 0643-658-01 6.4 Software/EPLD Head PCB Software (U1) 0634-418-01 Remote Software (U16) 0634-420-01 Remote EPLD 0634-419-01 Selected Part Numbers...

  • Page 135: Optics

    6.5 Optics Illumination Mirror, FRU 0617-879-01 M1/M2 Fold Mirror FRU SP-1137400 Motor 2 SP-1076580 Single Detector Pick-Off FRU SP-1137410 Dual Detector Pick-Off FRU SP-1137420 Selecta II Service Manual Selected Part Numbers 0641-234-06 Rev. F 6 - 5...
  • Page 136 M3 Fold Mirror FRU SP-1137430 M4 Combiner Mirror FRU SP-1137440 Polarizer, Selecta II FRU SP-1137450 L5 Lens Assembly FRU SP-1137460 M5/Motor 5 Assy, (method) 0633-383-01 L6 Lens Assembly FRU SP-1137470 Selected Part Numbers Selecta II Service Manual 6 - 6...
  • Page 137 Set Screws (for diode mask adj.) 7251-0203 KTP Assy. New 0640-961-01 KTP Mounting Plate needed for new KTP 0641-004-01 FRU, NEW KTP CRYSTAL W/ MOUNT, SLT II KMS701000 Selecta II Service Manual Selected Part Numbers 0641-234-06 Rev. F 6 - 7...

  • Page 138: Optical Head

    Left Head Cover 0633-424-01 Label, “Danger” 0634-531-01 Head Cable Strap 0634-545-01 Head Connector Screws (to module) 2104-1433 Head Serial Number Label 0635-741-01 Cover Screws 7104-0204 6.7 Covers and Trims Selected Part Numbers Selecta II Service Manual 6 - 8 0641-234-06 Rev. F...

  • Page 139: Miscellaneous

    Top Rubber Foot 0633-869-01 Bottom Rubber Foot 0633-869-03 Cover Screws 7019-0608 Cover Washer 7890-0600 Cable, Flex, CPU to PS, Selecta II 0632-693-01 Cable, Ribbon From CPU to PS HS-1086900 6.8 Miscellaneous H.S. Tonometer for BM style 3301-0010 H.S. Tonometer for BQ style...
  • Page 140 Selected Part Numbers Selecta II Service Manual 6 - 10 0641-234-06 Rev. F...

  • Page 141: Technical Notes And Field Change Orders

    7.1 Introduction The information in this Service Manual is subject to change without notice. As required, Lumenis Technical Support Department releases Technical Notes (TN) and/or Field Change Orders (FCO) to update its Field Service personnel on technical issues concerning this product. At their release, the documents become part of the Service Manual.
  • Page 142 This Page Is Intentionally Left Blank Technical Notes and Field Change Orders Selecta II Service Manual 7- 2 0641-234-07 Rev. F...

  • Page 143: Technical Note

    Product Support 2400 Condensa Street Santa Clara, CA 95051 Tel: (800) 367-7899 Fax: (408) 764-3890 Product Technical Note Selecta II / Epic Proprietary and Confidential TN No. Issue Date Rev. Rev. Date Written By: Jim Murray Signature: 12-FEB-04 12-FEB-04 TN Title...
  • Page 144 This Page Is Intentionally Left Blank Technical Notes and Field Change Orders Selecta II Service Manual 7- 4 0641-234-07 Rev. F...
  • Page 145 Background: Molex, the vendor that makes the connectors we use on the head cable, headboard, trigger board, and aiming diode has discontinued the connector. Parts Needed: 0643-663-01 is the FRU Selecta II Head CBL & Diode Mod Upgrade. The FRU consist of 1 of each: 0643-656-01 Selecta II PCBA Head Board Final Assem.
  • Page 146 If the FRU is needed you will need to replace all the components of the FRU, then recalibrate the laser. To replace the trigger board follow instructions below. Technical Notes and Field Change Orders Selecta II Service Manual 7- 6 0641-234-07 Rev. F...
  • Page 147 Solder the red and black wire from the transformer into the new trigger board, mount the board to the standoffs, connect wires to terminal blocks, and plug in two wire connector from the head cable. Selecta II Service Manual Technical Notes and Field Change Orders 0641-234-07 Rev. F...
  • Page 148 Varia Purpose: The purpose of this Technical Note is to inform the service organization of new FRU part numbers for the Spectra, Selecta II, and Varia. Background: These new FRU part numbers were created to add testing and packaging.
  • Page 149 FRU, SEL II Controller PCB, w Preprog SW 0639-654-01 SP-1076580 FRU, SEL II Motor 2 Half Wave Plate 0633-481-01 SP-1076590 FRU, Selecta II Shutter Assembly 0640-957-01 SP-1076600 FRU, Selecta II Delivery Mirror 0641-314-01 SP-1076610 FRU, SEL II Delivery Mirror/ Chassis Assy.
  • Page 150 This Page Is Intentionally Left Blank Technical Notes and Field Change Orders Selecta II Service Manual 7- 10 0641-234-07 Rev. F...

  • Page 151: Drawings And Schematics

    8.0 Drawings and Schematics This section includes a selection of schematic diagrams and drawings for the Selecta II Nd:YAG Ophthalmic Laser system as produced at the release of this manual. Name Drawing Number Number of Pages System Interconnect Diagram 1 Page...
  • Page 152 (This page intentionally blank) Drawings and Schematics Selecta II Service Manual 8- 2 0641-234-08 Rev. F...
  • Page 153 (2) High Voltage Cable (3) W ire CableTrigger High Voltage J10 Head "D" Connector Power Supply J8 Footswitch J7 CDRH J11 Speaker 34 W ire Flex Circuit 26 W ire Ribbon Cable 9 W ire Cable 6 W ire Ribbon Cable Low Voltage Power Supply J9 Remote...
  • Page 154 HARD BOARD HARD BOARD Motor 1 01 P14-1 Motor 1 02 P18-1 P14-2 LS5 A (P14 - P16 are all the same) Motor 1 03 P18-2 P14-3 LS5 K&E Motor 1 04 P14-4 LS5 K&E P18-3 LS5 C P18-4 FS5 A MOTOR FLEX CABLE P18-5 FS5 K&E...
  • Page 176 APPROVAL DATE DRAWN BY C BARGAS 9-17-04...