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Dornier Medilas H Service Manual

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WARNING
The Dornier Medilas H may only be serviced and maintenanced by authorized persons. Authorized
persons are persons trained by Dornier MedTech GmbH or by companies entrusted from Dornier
MedTech GmbH only.
Service and maintenance measures performed by unauthorized persons can cause life-threatening
injuries and/or serious damages on the Dornier Medilas H.
Dornier Medilas H
Service Manual
Order number:
K2011036 de
K2011037 en

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May 2, 2025

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Summary of Contents for Dornier Medilas H

  • Page 1 Dornier Medilas H Service Manual WARNING The Dornier Medilas H may only be serviced and maintenanced by authorized persons. Authorized persons are persons trained by Dornier MedTech GmbH or by companies entrusted from Dornier MedTech GmbH only. Service and maintenance measures performed by unauthorized persons can cause life-threatening injuries and/or serious damages on the Dornier Medilas H.
  • Page 2 Dornier MedTech GmbH All rights reserved. No part of this service manual may be reproduced or transmit- ted in any form without permission in writing from Dornier MedTech Laser GmbH. All rights reserved in case of patent issue or design registration.

  • Page 3: Table Of Contents

    Connection diagram of Dornier Medilas H ........
  • Page 4 Replacing hood and/or its subassemblies ........64 Replacing front panel and/or its subassemblies .
  • Page 5 DMH.SM EN G...
  • Page 6 DMH.SM EN G...

  • Page 7: Chapter 1: Safety

    Safety Safety General Safety Safety Regulations Laser Safety Protective Goggles Explosion and Fire Hazard Safety Checks Liability Warning and Identification Labels DMH.SM EN G...
  • Page 8 Safety DMH.SM EN G...

  • Page 9: General Safety

    General Safety Section 1 contains the safety regulations concerning the handling of the Dornier Medilas H. In order to work on and with the Dornier Medilas H, the user must be familiar with and observe the safety regulations. General Safety The Dornier Medilas H is a medical laser belonging to class IV according to IEC 825.

  • Page 10: Laser Safety

    Laser Safety All valid regulations concerning radiation protection must be observed when operating the Dornier Medilas H. In case of doubt regarding a regulation, get in touch with the laser safety officer appointed by your hospital or with a au- thorized service office.

  • Page 11: Protective Goggles

    Protective Goggles Protective Goggles During laser operation with the Dornier Medilas H, all persons present must wear safety goggles with lateral protection and the following inscription: The type designation of the safety goggles is as follows: 2080 Laser type (I stands for pulsed laser).

  • Page 12: Explosion And Fire Hazard

    Safety checks guarantee the safe and reliable operation of the Dornier Medilas H. The safety checks on Dornier Medilas H should be performed in intervals of 1 mil- lion pulses or every 12 months at least. If the interval is exceeded, a message ap- pears on the display of the Dornier Medilas H.

  • Page 13: Liability

    Dornier Medilas H the correct connection of the Dornier Medilas H after a change in installation site The following conditions must be fulfilled before activating the Dornier Medilas H...
  • Page 14 Warning and Identification Labels DMH.SM EN G...

  • Page 15: Chapter 2: Specifications

    Specifications Specifications Technical Data DMH.SM EN G...
  • Page 16 Specifications DMH.SM EN G...

  • Page 17: Technical Data

    Specifications Technical Data Technical Data Parameter Data Connection data Voltage 115 or 208 or 230 VAC Frequency 50/60 Hz Power consumption with 115 VAC 1850 VA max. with 208 and 230 VAC 2200 VA max. Climate Ambient temperature +15° C to +30° C Relative humidity 30% to 85% non-condensating Atmospheric pressure...
  • Page 18 Technical Data DMH.SM EN G...

  • Page 19: Chapter 3: Installation

    Installation Installation Packaging Scope of delivery Installation / first start-up Adjustment of mains voltage Filling up the coolant Installing of fiber holder Inspection On-site Installation Deinstallation Draining coolant DMH.SM EN G...
  • Page 20 Installation DMH.SM EN G...

  • Page 21: Packaging

    Installation Packaging Packaging Fig. 1 Packaging ....Packaging, compl. K2010754 DMH.SM EN G...
  • Page 22 Packaging DMH.SM EN G...

  • Page 23: Scope Of Delivery

    Scope of delivery Scope of delivery The following components are included in the delivery with the Dornier Medilas H: 1 foot switch 2 keys for the key switch 1 power cable 1 door-contact plug with bridge 1 fiber holder 1 operating manual 1 set of signs including a warning sign for OR door DMH.SM EN G...
  • Page 24 Scope of delivery DMH.SM EN G...

  • Page 25: Installation / First Start-Up

    Installation / first start-up 3.3.1 Adjustment of mains voltage The Dornier Medilas H can be operated with 115VAC, 208VAC or 230VAC. A line with 4 wires comes from toroidal transformer RTO300. Two of this wires are con- nected to the transformer relay.

  • Page 26: Filling Up The Coolant

    Absolutely take care not to spill any water while you are fill it in. Nevertheless, if water has been spilled, the Dornier Medilas H must not be op- erated and has to be sperated from mains until all liquid is eliminated.

  • Page 27: Installing Of Fiber Holder

    3.3.5 On-site Installation The Dornier Medilas H may be used only in a medically used room where the in- stallation complies with VDE 0107 or with the corresponding national installation standard. The Dornier Medilas H must be connected to a separately fused sock- et.
  • Page 28 Installation / first start-up Fig. 5 Connection diagram for Remote connector (K1009904) door contact and laser When a door-contact is connected, warning light the jumper between Pin 3 and 4 must be removed. room connection max. 10W/12V door contact Laser warning light DMH.SM EN G...

  • Page 29: Deinstallation

    Deinstallation Deinstallation Caution! The Dornier Medilas H must not be exposed to temperatures of less than 5° C (41° F), because of the internal cooling water. If the Dornier Medilas H should be transported or stored at temperatures less than 5° C (41° F), the Dornier Medilas H must be climatized by Dornier Ser- vice.
  • Page 30 Deinstallation DMH.SM EN G...
  • Page 31 Description Description Survey Connection diagram of Dornier Medilas H (version < SN 80) Connection diagram of Dornier Medilas H (version > SN 79) AC input circuit Power supply CPU board Control panel ACV board Laser safety chain Cooling system Laser head...
  • Page 32 Description DMH.SM EN G...

  • Page 33: Survey

    Description Survey Survey The Dornier Medilas H is designed in modular system. The identification and re- placement of defective components is quick and easy. The Dornier Medilas H consits of the following main components: frame and housing AC input circuit...

  • Page 34: Connection Diagram Of Dornier Medilas H

    Survey 4.1.1a Connection diagram of Dornier Medilas H (version < SN 80) FIBER INTERLOCK DMH.SM EN G...

  • Page 35: Connection Diagram Of Dornier Medilas H

    Survey 4.1.2b Connection diagram of Dornier Medilas H (version > SN 79) FIBER INTERLOCK DMH.SM EN G...

  • Page 36: Ac Input Circuit

    Survey 4.1.3 AC input circuit The AC input circuit is secured via a temperature fuse and an all-polo switch-off. The power supplies with wide range mains input are supplied from the mains po- wer supply directly. The pump and the fan (230VAC) are supplied via a toridal-core transformer, which is configured in dependence on mains input voltage to 115/208/230V.

  • Page 37: Power Supply

    Survey 4.1.4 Power supply A low voltage power supply with a wide range mains input of 110-230V (J1) ser- ves as energy supply for control electronic. J3 Pin 2 and 3 are supplied with the output voltage 24V/65W. A 1.8KW power supply with wide range mains input serves as energy supply for flash lamp.

  • Page 38: Cpu Board

    Survey 4.1.5 CPU board The CPU controls and monitors the Dornier Medilas H. The main component of the CPU is a PCB minimodul with flash eprom, SRAM and EEPROM to store calibration data. SRAM and the date functions of the real-time clock are battery-buffered. In this way the used settings are reusable after switching off the CPU.

  • Page 39: Control Panel

    5kV. 4.1.8 Laser safety chain The Dornier Medilas H is equipped with an integrated safety chain which effec- tively prevents the unintentional release of laser radiation. The laser safety chain consists of several series-connected hardware switches.

  • Page 40: Cooling System

    Survey 4.1.9 Cooling system In the cooling system only de-ionized water may be used. Additionally a bag is located within the tank which serves as ion exchanger. The aim is to keep the water absolutely clean. In this way losts of the optical effect during transition from flash lamp to laser rod are minimized.

  • Page 41: Laser Head

    Survey Fig. 12 Hose clip SNP 10, Ø 14,5 B3505091 Hose D10x3MM B3501775 Hose clip SNP 12, Ø 15,4 B3505092 Hose D13x3,5MM B3501734 Hose clip SNP 18, Ø 21,4 K2011059 Hose clip SNP 14, Ø 18,1 K2011193 4.1.10 Laser head The laser head contains the resonator, which is designed corresponding to the known physical basic principles.

  • Page 42: Service Mode

    3 Switch on Dornier Medilas H. Proceed as follows when the device is closed: 1 Switch on Dornier Medilas H. 2 Enter the 3-figure code number (request Dornier MedTech GmbH for the the code number). In service mode the following parameters are displayed additionally:...

  • Page 43: Menu Enlargement In Service Mode

    Service mode 4.2.1 Menu enlargement in service mode 1 Switch unit to service mode(s. page 40). 2 Press key "Menu". Fig. 14 screen: "Menu" 4.2.1.1 Deletion of logbook With valid service code and shown service logbook or therapy logbook the key "Clear"...

  • Page 44: Logbook

    Date of validity of the actually displayed parameters In the history the date of the last change is displayed "actual" for actually valid parameters Working hours Duration, the Medilas H was switched on Laser pulses Totally emitted laser pulses, independently of a change of the flash lamp...

  • Page 45: Analyse

    Service mode 4.2.3 Analyse In screen "Analyse" important system parameters and their status are displayed. This screens can be used for troubleshooting and for error diagnosis. By touching a signal name single signal monitorings can be activated or de-activated. The la- ser can be released with the parameters set in service mode.
  • Page 46 Service mode DMH.SM EN G...

  • Page 47: Calibration

    You should see a well-defined, circular spot with minimum distortions. 2 Connect fiber ends with the laser and an external energy meter. 3 Switch on Dornier Medilas H in service mode. 4 Enter the following settings: Mode:...
  • Page 48 Calibration Fig. 17 screen: CALIBRATION MONITORING Display change-over energy/power Deletion of calibration 16 Set external power meter to averaging. 17 Press the laserkey and switch laser to Ready status. Calibration procedure 18 Press key "Reset" for two seconds. The measuring values are marked with a question mark. 19 Select in the table on the control panel the first entry for measuring range 1.
  • Page 49 Calibration Fig. 18 screen:CALIBRATION To screen, shown in Fig. 19 MONITORING Display change-over energy/power Deletion of calibration Error possibilities: Error symptom Possible cause Measure, error clearing Key "Calibrate Not all values are calibrated. Calibrate missed values. Energy" does not Some values are out of tolerances. Re-calibrate wrong values.

  • Page 50: Calibration Of Energy Values

    If continuier with the calibration of energy values just after “Calibration of the internal energy me- ter" is accomplished, the steps 2, 3 and 4 are not necessary. 2 Switch on Dornier Medilas H in service mode (s. page 40). 3 Press the key "Calibrate" and change to calibration mode (Fig. 17) 4 Press the key "Calibrate Energy"...
  • Page 51 Calibration Calibration procedure 8 Press foot switch. 9 Wait until the system has recorded all measuring values completely. 10 Release foot switch. 11 When calibration is completed the message "Cali State:complete" appears. Fig. 20 screen:CALIBRATE ENERGY To screen, shown in Fig.

  • Page 52: Peripheral Devices Calibration

    Calibration 4.3.3 Peripheral devices calibration 1 Switch unit to service mode (s. Seite 40). 2 Press key "Peripheral Devices". Fig. 21 screen: Peripheral Entering fan calibration Devices Entering pilot Software version 1.01 calibration Opening/ closing of shutter/function check DIP switch on CPU Note "Peripheral Devices"...
  • Page 53 Opening/ closing of shutter Setting procedure 1 Switch Medilas H to mode "PERIPHERAL DEVICES" (s. page 50). 2 Wait approx. one minute, until the water temperature in the cooling system is equal. 3 Measure the temperature of the water within the tank (s. Seite 105).
  • Page 54 2 Connect the ends of the fiber to the laser and aim the fiber at a power meter (532nm). 3 Start Medilas H in service mode (see "service mode", page 40). 4 Switch Medilas H to mode "PERIPHERAL DEVICES" (s. page 50).
  • Page 55 3 Press the key "Pump off" and switch on pump. 4 Press the key "Calibrate Fan". 5 According to the frequency, the Dornier Medilas H is operated with, touch "50 Hz/Step 1" or "60 Hz/Step 1". 6 Set the fan voltage on plug X11 by touching the appropriate key "Calibrate" ac-...
  • Page 56 Calibration 4.3.3.4 Checking the shutter Fig. 26 screen: PERIPHERAL DEVICES. Software version 1.01 Preparation 1 Switch unit to service mode (s. Seite 40). 2 Press key "Peripheral Devices". 3 Press key "Shutter closed" repeatedly. Note After pressing key "Shutter closed", the key is labelled anew - "Shutter open" (inverted). The shutter must react to each key pressing.
  • Page 57 Calibration Fig. 27 screen: PERIPHERAL DEVICES. from software version 1.10 Preparation 1 Switch unit to service mode (s. Seite 40). 2 Press key "Peripheral Devices". 3 Press key "Shutter closed (0)" repeatedly. Note After pressing key "Shutter closed (0)", the key is labelled anew - "Shutter open (1)" (inverted). The key “Shutter closed (0)”...
  • Page 58 Calibration 4.3.3.5 Entering serial number Fig. 28 screen: PERIPHERAL DEVICES. Software version 1.01 1 Take the serial number from the identification plate of the unit. 2 Switch unit to service mode (s. Seite 40). 3 Press key "Peripheral Devices". 4 Press the key "Set SN" 5 Touch the serial number on the display and set the correct number with keys Note Calibration values/serial number are stored as soon as key "Exit"...
  • Page 59 Calibration DMH.SM EN G...
  • Page 60 Calibration DMH.SM EN G...
  • Page 61 Checking, replacement, adjustment Checking, replacement, adjustment Overall appliance (closed) Panel parts and their subassemblies Replacing side panel Replacing hood and/or its subassemblies Replacing front panel and/or its subassemblies Replacing rear panel Overall unit (open) Cooling system Replacing subassemblies in the cooling system Replacing pump Replace ACV board CPU board...
  • Page 62 Checking, replacement, adjustment DMH.SM EN G...

  • Page 63: Chapter 5: Checking, Replacement, Adjustment

    ......(02) Front panel s. page 68 (16) Hood s. page 64 ..... (07) Right-hand panel s. page 63 (106) Equipment line Holmium Laser K2010979 (105) Label Dornier Medilas H20 K2010937 (107) Manufactures name plate white K2010980 DMH.SM EN G...
  • Page 64 Overall appliance (closed) Fig. 30 Overall appliance (closed) Rear view ......(08) Rear panel ......s. page 69 (11) Plinth - - - - - - - - ....(10) Left-hand panel....s. page 63 (12) Steering roller K2010932 DMH.SM EN G...

  • Page 65: Panel Parts And Their Subassemblies

    5.2.1 Replacing side panel Removing side To open the Dornier Medilas H for servicing, proceed as follows: panel 1 Disconnect Dornier Medilas H from mains power supply. 2 Carefully unfasten two allen screws on each side panel using a 3mm allen key.

  • Page 66: Replacing Hood And/Or Its Subassemblies

    Panel parts and their subassemblies 5.2.2 Replacing hood and/or its subassemblies Removing hood Fig. 32 shows how to remove the hood and/or replace its subassemblies. These hood subassemblies must also be removed when the hood itself is to be replaced. Preparation 1 Removing side panel, see page 63.
  • Page 67 For servicing the Medilas H it is important to fix the dismantled hood securely with a special holder (see order no. below) at the rear handle of the Medilas H. This enables an operation of des Medilas H via the control panel without extension ca- ble.
  • Page 68 Panel parts and their subassemblies 5.2.2.2 Replacing control panel Figs. 34 and 35 show how to replace the control panel. Fig. 34 Disassembling control panel Note precautions for prevention of damage resulting from electrostatic charge....(14) Control panel K2011680 1 Note precautions for prevention of damage resulting from electrostatic charge.
  • Page 69 Panel parts and their subassemblies Fig. 35 Installing control panel Note precautions for prevention of damage resulting from electrostatic charge. Touch screen 1 Insert lower edge of the control panel carefully until the glass pane of the con- trol panel catches below the shield of the terminal strip (see fig. above). 2 Carefully push the board towards the bottom of the appliance until the bore- holes in the board coincide with the thread holes of the holding frame.

  • Page 70: Replacing Front Panel And/Or Its Subassemblies

    Panel parts and their subassemblies 5.2.3 Replacing front panel and/or its subassemblies Removing front Fig. 36 shows how to remove the front panel and/or replace its subassemblies. panel The front panel subassemblies must also be removed if the front panel itself is to be replaced.

  • Page 71: Replacing Rear Panel

    Panel parts and their subassemblies 5.2.4 Replacing rear panel Removing rear Fig. 37 shows how to remove and/or replace the rear panel. panel Preparation 1 Removing side panel, see page 63. Procedure 2 Remove allen screws (a) and (b). 3 Pull off the rear panel (08) carefully and disconnect the connector of the ground wire.

  • Page 72: Overall Unit (Open)

    Overall unit (open) Overall unit (open) The following two figures illustrate replaceable subassemblies. The key gives the subassembly description and refers to detailed sections on the respective subas- semblies which must be read. If the order number is given next to the subassem- bly description, there is no detailed description.
  • Page 73 Overall unit (open) Fig. 39 Overall unit (open) Rear view ......(09) Rear handle K2010815 (68) Laser power supply s. page 79 ..(55) Electricity complete s. page 80 (92) Temperature sensor (A18) K2010783 DMH.SM EN G...

  • Page 74: Cooling System

    Cooling system Cooling system 5.4.1 Replacing subassemblies in the cooling system The following figure shows the subassemblies which can be changed in the field. Note also the schematic diagram on page 38. Fig. 40 Cooling system, model with 3 fans Drain hose ....
  • Page 75 (52) Water filter s. page 105 Preparation for exchangement of assemblies of cooling system 1 Disconnect Dornier Medilas H from mains power supply. 2 Drain coolant off as in chapter "Draining coolant" is described (s. page 27). After replacement proceed as follows: 1 Replace the damaged hose clips (s.

  • Page 76: Replacing Pump

    Fig. 41 Replacing pump Warning: High voltage! Disconnect the Dornier Medilas H from the mains power supply during assembly. When the unit is switched on, housing of the pump, the heat exchanger, the la- ser power supply and the EMC hood are under ten- sion (half mains voltage).

  • Page 77: Replace Acv Board

    Replace ACV board Replace ACV board Preparation 1 Removing panel parts, see page 63-69. Procedure 2 Mark all connections for reconnection. 3 Detach all connections and the four fastening nuts. Fig. 42 Laser power supply Replace ACV board Key switch X8 DC supply X7 X12 power supply 24V Zero_Xing V3...

  • Page 78: Cpu Board

    CPU board CPU board 5.6.1 Replacing CPU board Preparation 1 Removing panel parts, see page 63-69. Procedure 2 Mark all connections for reconnection. 3 Detach all connections and the four fastening nuts. 4 Remove the PCB minimodul (s. page 78). Fig.

  • Page 79: Replacing Coin Cell

    CPU board 5.6.2 Replacing coin cell In fig. 44 the coin cell type CR2032 (72) is shown. The coin cell type CR2032 must be replaced when the message "Battery empty" is displayed after switching on the device. Preparation 1 Removing panel parts, see page 63-69. Fig.

  • Page 80: Replacing Pcb Minimodul

    CPU board 5.6.3 Replacing PCB minimodul The PCB minimodul has to be replaced only when the software is upgraded. Cus- tomized user programs may be stored in the PCB minimodul. Before replace- ment, note these user programs. Inform the user that these user programs must be reloaded after replacement.

  • Page 81: Replacing Laser Power Supply

    Replacing laser power supply Replacing laser power supply Preparation 1 Removing panel parts, see page 63-69. 2 Draining coolant, see page 27. Procedure 3 Mark all connections for reconnection and/or note the connection diagram in section 4.1.1a. 4 Detach the laser power supply connections. 5 Detach the cable for the flash lamp as shown in section 5.9.6.2.

  • Page 82: Electricity Complete

    Electricity complete Electricity complete The following figure shows the subassemblies which can be changed in the field. Cable connectors are not shown. See also the schematic diagram on page 38. Preparation 1 Removing panel parts, see page 63-69. Fig. 47 Electricity complete ....

  • Page 83: Laser Head

    Laser head Laser head The following two figures illustrate replaceable subassemblies. The key gives the subassembly description and refers to detailed sections on the respective subas- semblies which must be read. If the order number is given next to the subassem- bly description, there is no detailed description.
  • Page 84 Laser head Fig. 49 Rear view ....(36) Mirror holder with (40) Beam splitter K2010948 ......reflector mirror attached s. page 87 (42) Pilot laser s. page 87 (39) Pilot laser deflection mirror s. page 87 DMH.SM EN G...

  • Page 85: Replacing Shutter

    Laser head 5.9.1 Replacing shutter Preparation 1 Removing panel parts, see page 63-69. Procedure 2 Detach the electrical connections and the fastening screw. 3 Replace the entire shutter. Fig. 50 Shutter Detail from fig. 48 ......(22) Shutter K2010902 After replacement proceed as follows: 1 Check function.

  • Page 86: Checking, Ajusting Monitoring Switch

    Laser head 5.9.2 Checking, ajusting Monitoring switch Vorbereitung 1 Switch unit to service mode (s. page 40). 2 Press key "Peripheral Devices". Fig. 51 Anzeige: PERIPHERAL DEVICES Software version 1.10 3 Press key "Shutter closed (0)", to open the shutter (s. page 54). Fig.

  • Page 87: Replacing Resonator Mirror

    Laser head 5.9.3 Replacing resonator mirror Preparation 1 Removing panel parts, see page 63-69. 2 Removing EMC hood, see page 88. Procedure 3 If it is necessary to replace the output coupler or the reflector mirror along with the mirror holder, the front surface of the mirror holder should be adjusted to- wards the bottom edge of the cavity using a gauge as shown in fig.

  • Page 88: Replacing Monitor Board

    Laser head 5.9.4 Replacing monitor board Preparation 1 Removing panel parts, see page 63-69. Procedure 2 Detach the connection cable and remove the monitor board. 3 Fit the new monitor board. Fig. 54 Monitor board Detail from fig. 48 ........

  • Page 89: Replacing Pilot Laser

    Laser head 5.9.5 Replacing pilot laser Preparation 1 Removing panel parts, see page 63-69. Procedure A (valid for the old version of the pilot laser only) 2 Unfasten clamping screw (a) und pull the pilot laser out of its holder. 3 Detach the connection cables of the laser diode driver.

  • Page 90: Replacing Cavity And/Or Its Subassemblies

    Ensure before touching the contacts of the flash lamp that the following conditions are fulfilled: The Dornier Medilas H must be separated from mains power supply. There must not be a residual voltage at the cables of the flash lamp. Check with voltmeter, measuring range 1000VDC, at the measuring sockets (C+) and (C-) of the laser power supply.
  • Page 91 Laser head 5.9.6.1 Replacing cavity Preparation 1 Remove panel parts, s. page 63-69. 2 Remove EMC hood, s. page 88. Disassembling cavity 3 Remove the screws (a) from the two cable clips. 4 Remove the plastic nut (b). 5 Remove the plastic screw (h) and detach the ignition cable (c). 6 Lift the ignition unit (28) up and off and allow it to hang down the back.
  • Page 92 Laser head 11 Step 11 is not necessary for the devices with serial number ! 12. For units with a serial number of d 12, lift the cavity carefully about 20 mm and hold firmly in this position with one hand. 12 Turn the contact of the flash lamp (+) carefully left and right alternating around the axis of the lamp and pull simultaneously the contacts of the lamp in axial direction.
  • Page 93 Laser head 5.9.6.2 Replacing flash lamp Replacing ignition Preparation unit 1 Removing panel parts, see page 63-69. 2 Removing EMC hood, see page 88. Disassembling ignition unit 3 Remove the screws (a) from the two cable clips. 4 Remove the plastic nut (b). 5 Remove the plastic screw (h) and detach the ignition cable (c).
  • Page 94 Laser head 9 Turn the lamp contact (-) carefully around the lamp axle back and forth and take off at the same time the lamp contact in axial direction. 10 Remove six allen screws (f). 11 Step 11 is not necessary for the devices with serial number ! 12. For units with a serial number of d 12, lift up the top section of the cavity care- fully approx.
  • Page 95 Laser head 5.9.6.3 Replacing ignition unit The procedure for replacing the ignition unit is part of section Replacing flash lamp, see page 91. Please take care that the ignition cable (Fig. 58) is galvanically indirect-connected to the cavity (plastic washer and screw). DMH.SM EN G...

  • Page 96: Adjusting Resonator

    Adjusting resonator 5.10 Adjusting resonator CAUTION Carry out adjustments in a protected laser area. All persons working in this area must wear protective goggles. WARNING Live parts are freely accessible when the appliance is open. Especially the lamp cables of the laser power supply and the EMC hood must not be touched while the system is in operation.

  • Page 97: Adjusting Output Coupler With Regard To Laser Rod

    To prevent damage to eyes resulting from inadvertantly triggering a laser beam, en- sure that the Dornier Medilas H is dis- connected from the power supply during the following adjustment. 1 Place the deflector mirror unit (83) and the autocollimator (85) onto the optical rail as shown above.

  • Page 98: Pre-Setting Reflector Mirror

    To prevent damage to eyes resulting from inadvertantly triggering a laser beam, en- sure that the Dornier Medilas H is dis- connected from the power supply during the following adjustment. 1 Place the deflector mirror unit (83) and the autocollimator (85) onto the optical rail as shown above.

  • Page 99: Fine Adjustment Of The Reflector Mirror

    2 Detach the plastic cap (b) and the SMA subassembly (21). 3 Position the energy meter (86) as shown above. 4 Bridge the fiber interlock. 5 Switch on Dornier Medilas H. 6 Switch the laser on in service mode and set the following values: 5Hz, 540V. 7 Press foot switch.

  • Page 100: Adjusting Pilot Laser Coaxially With Regard To The Therapy Laser Beam (Units Til Serial Number H20-079)

    Adjusting resonator 5.10.4.a Adjusting pilot laser coaxially with regard to the therapy laser beam (units til serial number H20-079) Valid for the pilot laser with power supply and defelctor mirror (old version) Fig. 62 Adjusting pilot laser coaxially with regard to the therapy laser beam (units til serial number H20-079)

  • Page 101: Adjusting Pilot Laser Coaxially With Regard To The Therapy Laser Beam (Units From Serial Number H20-080)

    Adjusting resonator 5.10.4.b Adjusting pilot laser coaxially with regard to the therapy laser beam (units from serial number H20-080) Valid for the pilot laser without power supply and defelctor mirror (new version) Fig. 63 Adjusting pilot laser coaxially with regard to the therapy laser beam (units from serial number H20-080)

  • Page 102: Adjust Fiber Coupler

    Adjusting resonator 5.10.5 Adjust fiber coupler In the next section the lens is installed and pre-set with the pilot laser beam. The lens is then adjusted to optimise the therapy laser beam entry to the optical fiber. Before installing the lens the energy values are measured and noted for verifica- tion.
  • Page 103 Adjusting resonator 10 Change the voltage until the measured energy is approx. 120 mJ. 11 Turn the screw (c) in one direktion until the energy falls just below 100 mJ. Re- member this screw position. 12 Turn screw (c) in the other direction over the maximum energy value until the energy on the other side falls just below 100 mJ as well.
  • Page 104 Adjusting resonator DMH.SM EN G...
  • Page 105 Maintenance Maintenance Replacing ion exchanger Replacing water filter CPU - Software Upload DMH.SM EN G...
  • Page 106 Maintenance DMH.SM EN G...

  • Page 107: Replacing Ion Exchanger

    3 Replace the coolant as described in sections 3.3.2 and 3.4.1. Fig. 65 Replacing ion exchanger Warning: High voltage! For assembly jobs discon- nect Dornier Medilas H from mains power supply. When the unit is switched on, housing of the pump, the heat exchanger, the laser power supply and the EMC hood are under ten- sion (half mains voltage).

  • Page 108: Replacing Water Filter

    Fig. 66 Replacing water filter Warning: High voltage! For assembly jobs discon- nect Dornier Medilas H from mains power supply. When the unit is switched on, housing of the pump, the heat exchanger, the la- ser power supply and the EMC hood are under ten- sion (half mains voltage).

  • Page 109: Cpu - Software Upload

    CPU - Software Upload CPU - Software Upload 1 Connect the Dornier Medilas H and the PC with the SW upload cable K2010807 as follows: "X1" ("SERVICE" = COM 2) to "Service" interface at the rear panel "X2" ("PC") to a free COM-Port on the PC 2 Insert upgrade CD into PC.
  • Page 110 CPU - Software Upload DMH.SM EN G...

  • Page 111: Chapter 7: Troubleshooting

    Troubleshooting Troubleshooting Errors with displayed error codes Errors without displayed error codes Laser cannot be switched on with key switch Display remains dark or key pressing is recognized wrong or not at all System reports overtemperature repeatedly (error code "1" in Logbook) 114 Pilot laser is not visible very well or not at all at distal end of fiber No laser pulse is emitted Laser pulse aborts prematurely...
  • Page 112 Troubleshooting DMH.SM EN G...

  • Page 113: Errors With Displayed Error Codes

    Troubleshooting Errors with displayed error codes Errors with displayed error codes For each error process the listed working steps in stated sequence. Error code Possible cause Error detail, check Measure, error clearing No flow in cool- Flow sensor defective or not Connect, replace, 5.4.1 ing system mea- connected...
  • Page 114 Errors with displayed error codes Error code Possible cause Error detail, check Measure, error clearing mains frequency not in range 45-65Hz Establish a mains frequency of 45-65Hz Control panel Control panel functions disas- Fit in display so that no pres- sembled sure to the touch foil occurs Replace control panel, error is...
  • Page 115 Errors with displayed error codes Error code Possible cause Error detail, check Measure, error clearing Cable W15 defective, not con- Connect, replace nected Fan jammed, wrong wired or Establish wiring defective Fiber CPU-ACV defective re- Connect fiber correctly or re- sp.

  • Page 116: Errors Without Displayed Error Codes

    Errors without displayed error codes Errors without displayed error codes For each error process the listed working steps in stated sequence. 7.2.1 Laser cannot be switched on with key switch Possible cause Check, error detail Measure, error clearing MUSHROOM SWITCH Pressed Pull out mushroom switch Defective...

  • Page 117: Pilot Laser Is Not Visible Very Well Or Not At All At Distal End Of Fiber

    Errors without displayed error codes 7.2.4 Pilot laser is not visible very well or not at all at distal end of fiber Possible cause Check, error detail Measure, error clearing Pilot laser on level 0 See setting of pilot laser Set pilot to a higher level Serial number <...

  • Page 118: Therapeutic Effect Is Too Low

    Errors without displayed error codes 7.2.7 Therapeutic effect is too low Possible cause Check Error clearing Fiber, applicator Proximal or distal end is impuri- Replace applicator, fiber fied, broken or pilot laser is dif- fuse and not round Fiber coupler Energy setting service mode:in- Adjust fiber coupler Check in- ternal energy = approx.

  • Page 119: Status Led's Of Cpu

    Status LED's of CPU Status LED's of CPU Fig. 68 Status LED's of CPU Description (LED lights up) AC voltage on ACV board O.K. Laser pulse is emitted Flash lamp is ignited Voltage of power supply is O.K. Flash lamp is simmering Temperature of laser power supply is too high Shutter is open Footswitch is pressed...
  • Page 120 Status LED's of CPU DMH.SM EN G...

  • Page 121: Chapter 8: Spare Parts

    Spare parts Spare parts Spare parts list Order list DMH.SM EN G...
  • Page 122 Spare parts DMH.SM EN G...

  • Page 123: Spare Parts List

    Spare parts Spare parts list Spare parts list Sort according to mat. no. Mat. no. designation Recommended stockholding of Fig. on spare parts page 6-15 15-n units units units B3002710 Key switch B3501734 Hose D13x3,5MM n/20 B3501775 Hose D10x3MM n/20 B3502445 Light guide/meter n/10...
  • Page 124 Fig. on spare parts page 6-15 15-n units units units K2010919 Set of labels K2010932 Steering roller K2010937 Label Dornier Medilas H20 K2011075 Fan 142mm K2010948 Beam splitter K2010949 Pilot laser deflection mirror K2010955 main cable K2010961 Tank K2010967 Water filter...

  • Page 125: Order List

    Order list Order list Sort according to designation order Mat. no. designation Recommended stockholding of Fig. on spare parts page 6-15 15-n units units units K2010571 24V power supply K2010790 ACV board n/15 K1007148 Air break switch K2010510 Appliance input K1009862 Autocollimator K2010948...
  • Page 126 Mat. no. designation Recommended stockholding of Fig. on spare parts page 6-15 15-n units units units K2010937 Label Dornier Medilas H20 K2010853 Lamp o-ring n/1,5 K2010716 Lamp reflector n/10 K2010830 Laser power supply K2010762 Left-hand panel K2011009 Lens B3502445...
  • Page 127 Order list address array sender's address name / company fax no. tel. no. receiver name / company fax no. DMH.SM EN G...
  • Page 128 Order list DMH.SM EN G...
  • Page 129 Appendix DMH.SM EN G...
  • Page 130 DMH.SM EN G...
  • Page 131 Installation- Report Dornier Medilas H Maintenance- Service- set mains voltage: 115V 208V 230V Customer: SID: Serial no.: Comments (reason of checking, kind of repair etc.): 1. Visual inspection housing grounding technical condition accessories adjustm. cooling system safety functions pilot (distal) 2.
  • Page 132 DMH.SM EN G...

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