QStar Service Manual

QuadroStar

SERVICE MANUAL

Version 2.0

English

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Contents

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Contents

Contents .................................................................................................................................. 3 List of illustrations .................................................................................................................. 6 1 Technical Data ................................................................................................................. 7

1.1 General specifications .................................................................................................. 7 1.2 Laser specifications ...................................................................................................... 7

2 Device models .................................................................................................................. 9 3 Subassemblies of the device ........................................................................................ 10 4 Installation of the device ............................................................................................... 11

4.1 Safety notes ................................................................................................................ 11 4.2 Notes on installation ................................................................................................... 11

4.2.1 Preparing the laser device ................................................................................. 12 4.2.2 Scope of delivery............................................................................................... 13 4.2.3 Connection of warning lamp and door interlock ................................................. 13 4.2.4 Fuses ................................................................................................................ 14 4.2.5 Laser dongle ..................................................................................................... 14

4.3 Installation report ........................................................................................................ 15 4.3.1 Measuring the output power of the device ......................................................... 15

5 Start-up of the device .................................................................................................... 16 5.1 Switching on ............................................................................................................... 16

6 Software description: Operating mode ........................................................................ 17 6.1 Adjustment of treatment parameters ........................................................................... 17 6.2 Adjustment of spot size ............................................................................................... 19 6.3 Adjustment of aiming beam intensity .......................................................................... 19 6.4 Special functions (TOOLS) ......................................................................................... 19

6.4.1 Laser calibration ................................................................................................ 20 6.4.2 Calibration of the touchscreen ........................................................................... 21

6.5 Activation of Ready mode and treatment .................................................................... 21 6.5.1 Releasing the treatment beam .......................................................................... 22 6.5.2 Switching the device off .................................................................................... 22

7 Software description: Service mode ............................................................................ 23 7.1 Boot process ............................................................................................................... 23 7.2 Configuration of HyperTerminal .................................................................................. 24 7.3 Capture text ................................................................................................................ 25 7.4 Main menu .................................................................................................................. 28 7.5 Tools Menu ................................................................................................................. 28 7.6 Menu for language selection ....................................................................................... 28 7.7 Service code ............................................................................................................... 28 7.8 Service mode .............................................................................................................. 29

7.8.1 Download .......................................................................................................... 29 7.8.2 Digital IN ........................................................................................................... 34 7.8.3 Digital OUT ....................................................................................................... 34 7.8.4 Analog IN/OUT .................................................................................................. 35

7.8.4.1 Power Adjust ................................................................................................. 36 7.8.4.2 TEC Adjust .................................................................................................... 39

7.8.5 Standard Initialization ........................................................................................ 42 7.8.6 Date & Time ...................................................................................................... 42 7.8.7 Module Data ...................................................................................................... 42 7.8.8 Error List ........................................................................................................... 44

Contents

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7.8.9 TecStar ............................................................................................................. 46 7.8.10 Calibration of the touchscreen ........................................................................... 46

8 Error Messages .............................................................................................................. 47 9 Laser modules ............................................................................................................... 50

9.1 Laser safety ................................................................................................................ 50 9.2 Handling diode lasers ................................................................................................. 50 9.3 LBO laser module ....................................................................................................... 50

9.3.1 Principle of LBO disc laser ................................................................................ 51 9.3.2 Design of LBO disc laser ................................................................................... 52 9.3.3 Terminal assignment ......................................................................................... 53 9.3.4 Replacement of LBO disc laser ......................................................................... 53

9.4 Diode laser.................................................................................................................. 54 9.4.1 Principle of diode laser ...................................................................................... 54 9.4.2 Design of diode laser module ............................................................................ 56 9.4.3 Terminal assignment ......................................................................................... 56 9.4.4 Replacement of diode laser ............................................................................... 57

10 Laser cooling .............................................................................................................. 58 10.1 Replacement of fans ................................................................................................ 59 10.2 Replacement of the TEC module ............................................................................. 59

11 Fiber port assembly ................................................................................................... 60 11.1 LBO laser ................................................................................................................ 60

11.1.1 Adjustment of fiber port assembly of LBO therapy laser .................................... 60 11.1.2 Adjustment of pilot laser of LBO module ........................................................... 61

11.2 Diode laser .............................................................................................................. 61 11.2.1 Adjustment of fiber port assembly of therapy diode laser .................................. 62 11.2.2 Adjustment of the pilot laser of the diode laser module ..................................... 62

12 Beam delivery system ................................................................................................ 63 12.1 Fiber with handpiece ................................................................................................ 63 12.2 Bare Fibers .............................................................................................................. 63 12.3 Special handpieces .................................................................................................. 63

13 Replacement of optical components ........................................................................ 64 13.1 Focusing lenses on fiber port assembly ................................................................... 64

13.1.1 LBO laser (see Figure 16) ................................................................................. 64 13.1.2 Diode laser (see Figure 17) ............................................................................... 64

13.2 Transfer fibers ......................................................................................................... 65 13.3 Focusing handpiece................................................................................................. 65

14 Safety Tests ................................................................................................................ 66 15 Control unit ................................................................................................................. 68

15.1 Control concept ....................................................................................................... 68 15.2 Controller ................................................................................................................. 68 15.3 Display Control Unit (DCU) ...................................................................................... 69 15.4 Current measurement .............................................................................................. 70 15.5 Calibration port ........................................................................................................ 70

16 Laser power supply ................................................................................................... 71 16.1 Operating principle .................................................................................................. 71 16.2 Function test of laser power supply ......................................................................... 73 16.3 Control signals ......................................................................................................... 74 16.4 Fusing...................................................................................................................... 74

17 Electronic assemblies ............................................................................................... 75 17.1 Controller pcb .......................................................................................................... 75

Contents

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17.2 Display pcb .............................................................................................................. 77 17.3 TEC pcb .................................................................................................................. 78 17.4 DTI pcb .................................................................................................................... 79 17.5 Current transformer pcb .......................................................................................... 80

18 Spares, wearing parts and service tools .................................................................. 82

List of illustrations

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List of illustrations

Figure 1: Overview of subassemblies ...................................................................................... 10 Figure 2: Front view ................................................................................................................. 11 Figure 3: Connectors on rear panel of device .......................................................................... 12 Figure 4: Connectors for door interlock and laser warning lamp .............................................. 14 Figure 5: "Standby" menu: Repeat pulse mode with handpiece ............................................... 17 Figure 6: Tools menu ............................................................................................................... 19 Figure 7: "Ready" menu in Burst mode with handpiece ........................................................... 22 Figure 8: HyperTerminal .......................................................................................................... 23 Figure 9: Principle of the LBO disc laser .................................................................................. 51 Figure 10: Design of LBO laser ............................................................................................... 52 Figure 11: Pin assignment of LBO D-Sub connector ............................................................... 53 Figure 12: High-power diode laser ........................................................................................... 55 Figure 13: Staircase mirror ...................................................................................................... 55 Figure 14: Diode laser module ................................................................................................. 56 Figure 15: Laser cooling system .............................................................................................. 59 Figure 16: LBO fiber port assembly ......................................................................................... 60 Figure 17: Fiber port assembly of diode laser .......................................................................... 61 Figure 18: Handpiece .............................................................................................................. 65 Figure 19: Control unit ............................................................................................................. 69 Figure 20: DCU unit ................................................................................................................. 69 Figure 21: Calibration port ....................................................................................................... 70 Figure 22: Laser power supply ................................................................................................. 71 Figure 23: Block diagram of power supply ............................................................................... 73 Figure 24: Controller pcb ......................................................................................................... 75 Figure 25: PWM adjustment of diode current on controller pcb ............................................... 77 Figure 26: Display pcb ............................................................................................................. 77 Figure 27: TEC pcb ................................................................................................................. 79 Figure 28: DTI pcb ................................................................................................................... 80 Figure 29: Current transformer pcb.......................................................................................... 81

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1 Technical Data

1.1 General specifications

Beam guidance: Flexible optical fiber

Display: LCD display

Operator guidance: Touchscreen

Cooling: Internal air cooling, power-regulated

Door interlock connector: Potential-free contact, 5 VDC / max. 20 mA (TTL)

Laser warning lamp: Potential-free relay contact max. 24 V / 0,5 A (normally open contact)

Operating conditions: Temperature: +15 C ... +30 C

Relative humidity: 85 %

Atmospheric pressure:...700 ... 1060 hPa

Transport and storage conditions: Temperature: -5C ... +55C

Relative humidity:...10 % ... 95 % (no condensation)

Dimensions (W x D x H): 41 x 39 x 21 cm

Weight: 18.5 kg

Power requirements: 115 / 230 VAC

50/60 Hz

max. 600 VA

Classification acc. to German MPA II b

Protection Class: I

1.2 Laser specifications

Laser type: Diode-pumped, frequency-doubled

solid-state laser (LBO)

Wavelength: 532 nm

Laser Class: 4 (requires laser-protective eyewear D 532 L4)

Laser power: 0.5 5 watts, distal

Operating modes: cw, single pulse, burst and repeat pulse mode

Pulse duration: 5 ms 2.5 s, adjustable

Pulse repetition rate: 1 120 Hz

Number of pulses in burst mode: 2 50, infinite

Tolerance of output power: max 20 %

Spot size: Handpiece 0.5; 1.0 and 1.5 mm

Energy density: 0.5 ... approx. 6,300 J/cm, adjustable depending on handpiece used

Beam divergence (half angle): max. 125 mrad (7,2)

Laser type: Diode laser

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Wavelengths: 808 nm

938 nm

978 nm

Laser Class: 4 (requires laser-protective eyewear D 808-978 L3)

Laser power: 1 25 watts, distal

Operating modes: cw, single pulse, burst and repeat pulse mode

Pulse duration: 5 ms 2.5 s, adjustable

Pulse repetition rate: 1 120 Hz

Tolerance of output power: max 20 %

Spot size: Handpiece 0.6; 1.0 and 1.5 mm

Bare fiber 0.2; 0.3 and 0.6 mm

Energy density: 0.5 J/cm approx. 22,000 J/cm, adjustable depending on handpiece

Beam divergence (half angle): max. 390 mrad (21) with handpiece

max. 370 mrad (22) with bare fiber

Number of pulses in burst mode: 2 50, infinite

Laser type Laser diode, aiming laser

Wavelength 635 nm

Laser Class I

Laser power


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2 Device models

Name Item No. Built-in laser(s)

QuadroStar 532/980 1520 LBO 532 and Diode 978

QuadroStar 532 1521 LBO 532

QuadroStar 532/940 1522 LBO 532 and Diode 938

QuadroStar 532/810 1523 LBO 532 nm and Diode 808

QuadroStar 980 1524 Diode 978



The basic unit is the same for all device models. The models only differ in the number and the type of the integrated laser modules. On devices with two integrated laser modules, these cannot be operated simultaneously. The respective device model can be identified by its Item No. on the type label located on the rear panel of the device.


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3 Subassemblies of the device

Cooling Unit

Laser Unit

LBO Disc

Laser

Diode

Laser

Power Supply

Module 1

TEC Driver

Diode Driver

CPU Driver

Interface

QNF PCB

Optic-Interface

Display Control Unit

Display Controler PCB

Display/Touch/JoggleCali-

port

FC

LBO

FC

Diode

Interface (door/lamp, serv., IC, foot.)

CPU / Controler PCB

TE

C C

ontro

ler P

CB

Controler

Housing

Line, fuse

Module 2

TEC Driver

Diode Driver

CPU Driver

Interface

Fan

Fan

Fan

DTI

PCB

CT

PCB

AC/DC

Converter

Figure 1: Overview of subassemblies

For the block diagram of the device, refer to Appendix 1 of this Service Manual.


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4 Installation of the device

4.1 Safety notes

The device is a Class 4 medical laser device (IEC 825), which requires strict observance of the following safety notes:

The QuadroStar may only be installed by authorized personnel who successfully finished a service-training course on this device at Asclepion Laser Technologies GmbH.

Make sure to avoid any risk to third persons.

Always wear appropriate protective eyewear while working on the laser system.

Any modification of the laser system not approved by Asclepion Laser Technologies GmbH will result in the expiry of the medical approval, the CE mark as well as the warranty. In this case, Asclepion Laser Technologies GmbH will not assume any liability for consequential damage.

4.2 Notes on installation

Figure 2: Front view

Calibration port

Fiber output with SMA connector

Laser warning lamp

Laser STOP button

Key switch

Control knob

Display with touchscreen

Fiber-coding connectors

Handpiece receptacles


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Figure 3: Connectors on rear panel of device

After every transport, where the difference between the transport temperature and the room temperature of the installation site exceeds 10 C, allow for at least 2 h for adjustment to the

temperature in the installation room (WITHOUT laser operation). Afterwards, on every switch on, the system checks the internal temperature to avoid damage to the laser diodes. As long as the temperature of the heat sink is


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2. Check all shock and inclination sensors at the packaging, if attached. In the event of damage, immediately make a complaint to the responsible forwarding agency.

3. Remove all transport packing and check the device for any transport damage. 4. Check labeling of the device (refer to User's Manual, Section 13); affix the provided

labels, if necessary. 5. Connect footswitch and door interlock connector (see 4.2.3). 6. Plug the power cable first into the power input connector of the device. Before

connecting the other end of the power cable to the power outlet, make sure the power switch is set to O (device not powered).

4.2.2 Scope of delivery

Basic device

Basic laser device

Power cable

Footswitch

Remote door interlock connector

Key for key switch (2 units)

User's Manual

Laser-protective eyewear for physician (1 each per laser module)

Laser-protective eyewear for patient (1 unit)

Accessories

Optical fiber with handpiece and three spacers for every laser module

Optional accessories

Bare fiber Diode 810 ... 980 - 200 m core diameter




Bleaching handpiece

Transport case

4.2.3 Connection of warning lamp and door interlock

On the rear panel of the device, a connector is provided for the connection of a door interlock and a warning lamp (see Figure 3, page 12). If you do not use this facility, make sure to plug the supplied interlock shorting plug in this connector.


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Door interlock terminals 5 VDC / 20 mA

Relay terminals for laser warning lamp (max. 24 V / 0.5 A)

Figure 4: Connectors for door interlock and laser warning lamp

By connecting the two "door interlock 5 VDC / 20 mA" terminals to an external contact, such as a door interlock, you can prevent laser radiation from being emitted when the door of the laser room is opened. That way, the surgical beam is automatically shut off when the door is being opened thus precluding any risk to the person entering.

This external circuit must never get in touch with a power cable and it must not be

housed in a connector or any other connecting element carrying line voltage. The laser can only be operated, when the door-interlock circuit is closed. Therefore, the door interlock connector is factory-fitted with a provided shorting bridge. To connect a door interlock circuit, remove this bridge and connect your door interlock circuit to the same terminals. If you do not use a door interlock circuit, keep the shorting bridge connected to the respective terminals. The same connector provides connection to a potential-free normally open contact. This

contact allows a galvanically isolated low-voltage circuit for a low-voltage warning lamp

(max. 24V / 0.5 A) to be switched. The contact closes when the laser is switched to READY mode.

4.2.4 Fuses

The all-pole device line fuse (250V / 6.3AT) is integrated in the power switch of the power supply and accessible from the rear side. One automotive fuse (15 A blue) each is located on every diode-driver pcb in the power supply protecting the output of the 12V TEC supply. The fuses are accessible from the front side of the power supply unit.

4.2.5 Laser dongle

Every laser module is equipped with a dongle. The dongle of diode lasers is located in the module; that of the LBO laser is located externally on the module. The dingles are connected to the DTI PCB.

When a laser module has to be replaced, the dongle must remain connected

to the module. Otherwise, the warranty is void.


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The dongles are exclusively initialized in the factory. The following basic data is stored to the dongle:

- S/N and start-up date of laser module - Name and S/N of the device into which the laser module was fitted - Maximum laser power - Wavelength

In addition, the dongles store important operating parameters, such as

- adjustment and calibration data - total energy emitted - number of emitted pulses - period the laser was in READY mode - last system errors

The stored data can be recalled via the Service menu. The most important basic data cannot be reset.

4.3 Installation report

When commissioning a new device, the function tests and safety tests listed in the INSTALLATION REPORT must be performed and their results recorded before starting to work with the device.

4.3.1 Measuring the output power of the device

To ensure correct installation, it is necessary to check the output powers obtained in operating mode. To this end, the device must have been installed completely and the corresponding handpiece be connected. The power values of the fluence/spot size combinations specified in the INSTALLATION REPORT are to be checked at various frequencies and the measured values entered in the report.

The measured values should not deviate by more than 15 % from the displayed energy values.

Power meter:

Power meter readout (Ophir NOVA)

Power meter sensor head Ophir F150A-SH

Please observe the specified calibration intervals!


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5 Start-up of the device

Before beginning with the start-up procedure, the following requirements must have been

met:

1. The line voltage specified on the label at the rear panel agrees with the line

voltage available at the place of installation.

2. The power plug has been plugged into an appropriate power outlet.

3. The potential equalizing cable has been connected (if required).

4. The SMA connector of the applicator (bare fiber or fiber with handpiece) has been

firmly connected to the SMA connector of the fiber output on the front panel of the

device. The fiber-coding plug has been plugged into the corresponding connector.

5. The footswitch plug has been properly connected to the footswitch connector on

the rear panel of the device and screwed down.

6. Warning lamps have been mounted at the laser room entrance and switched on (if

necessary).

5.1 Switching on

Switch the power switch on the rear panel of the device to I (ON). The switch lights green and the fan in the power supply starts running.

Verify that the Laser STOP button is deactivated (not pressed).

Insert the key in the key switch (see Figure 2, page 11) and turn it clockwise as far as it will go.


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6 Software description: Operating mode

6.1 Adjustment of treatment parameters

The treatment parameters are to be adjusted via the touchscreen and the control knob (joggle) at the right of the front panel (see Figure 2, page 11). Select the function by pressing the corresponding function key on the touchscreen:

Simple ON/OFF function keys appear highlighted (colored) when activated.

Function keys with several options are marked by a red frame after they were activated by tapping on them. To select the desired parameter, turn the control knob. To confirm and store the selected parameter, briefly depress the control knob or alternatively tap the activated function key on the touchscreen once more.

Keys of adjustable parameters are always highlighted in color. Keys that are not highlighted are deactivated. They only serve for information. The system confirms successful key pressures by a short beep signal. After switch-on, the starting screen with company logo appears on the display, while the device automatically tests critical and safety-relevant modules. On devices with two laser modules, first select and confirm the desired wavelength. On having done so, the device is in "Standby mode with the screen showing all adjustable parameters of the activated laser module (Figure 5, page 17). The activated fiber connector is indicated by the laser warning LED lighting directly above the corresponding SMA fiber connector (see Figure 2, page 11).

Figure 5: "Standby" menu: Repeat pulse mode with handpiece

The treatment parameters adjustable do not only depend on the laser module used, but also

on the operating mode selected and the applicator used.

The following parameters are selectable (From top left to bottom right of the touchscreen):


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Parameter Symbol Display Restrictions

Wavelength

Wavelength in nm

Selectable only on devices with several laser modules, ON/OFF function

Pulse duration

Pulse duration in ms

Available only in the following operating modes: single pulse, repeat pulses and burst

Pulse repetition rate

Pulse repetition rate in Hz

Available only in repeat pulse mode

Pulse interval

Pause between two pulses in ms

Available only in burst mode

Operating mode

Continuous

CW

Single pulse

SINGLE

Multiple pulses

BURST and number of pulses

"Burst infinite" corresponds to Repeat pulse mode, but with the pulse interval to be selected instead of the pulse repetition rate

Repeat pulses

REPEAT

Energy density

Fluence in J/cm Available only in single pulse, repeat pulse and burst mode and when using an applicator with handpiece

Spot size

Spot diameter in mm

Available only when using a fiber applicator with handpiece

Laser power

Power in watts Available only in cw mode or when using a bare fiber

Aiming beam laser

In "Standby, intensity and operating mode (cw or blinking) are selectable, in "Ready", only the operating mode.


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6.2 Adjustment of spot size

Beside on the used laser module, the beam diameter of the therapy laser mainly depends on the applicator used.

As with bare fibers, in general, laser treatment is performed in contact mode, the spot size achieved with these fibers corresponds to the core diameter. The device automatically detects the fiber core diameter after the fiber plug was connected to the SMA connector and the fiber-coding plug was plugged into the corresponding fiber coding connector.

When you use fibers with handpiece, the spot diameter will not be detected automatically. The effective beam diameter (spot size) is engraved on the handpiece tip and must be selected via the beam diameter parameter key. This is required for the correct calculation of the fluence values.

6.3 Adjustment of aiming beam intensity

In "Standby mode, the aiming beam intensity can be varied by activation of the Pilot key (Figure 5, page 17) and turning the control knob. The variations are directly visible at the aiming beam. However, the new setting will be stored only by a pressure of the control knob or the Pilot key. The intensity in continuous mode and a blinking mode are adjustable.

6.4 Special functions (TOOLS)

The "TOOLS" menu is activated by pressing the "Tools" key (Figure 5, page 17). On doing so, the Tools menu appears on the screen (Figure 6, page 19).

Figure 6: Tools menu


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You can execute the following functions by pressing the corresponding keys:

Key Function Remarks

Display of the accumulated total lasing time

Separate for every module. Display only Not resettable

Resets the total energy applied to zero

To be done manually for every new patient. Performed automatically when you switch off the device.

Calibration of laser power Refer to Section 6.4.1, page 20

Adjustment of display brightness

To be activated by key pressure; variation by turning the control knob and storage by pressing the key or the control knob

Stores any variations of the settings and returns to the basic menu.

6.4.1 Laser calibration

The device allows the periodic calibration of the laser parameters by the user. It is advisable to calibrate the device at least once a month.

Periodic laser calibration must always be performed with the handpiece

applicator. The use of any other applicator, such as bare fibers, may result

in miscalibration. Therefore, their use is strictly forbidden for calibration.

- Select the laser module to be calibrated. - On the "Tools" menu, press the "Laser Cali key (Figure 6, page 19) - Follow the prompts appearing on the screen. - Save the new calibration data by pressing the "Save" key or exit the calibration menu

without saving the new data by pressing the "Exit" key.

The calibration procedure may take up to five minutes. Do not release the

footswitch unless the laser switched to "Standby" mode by itself.


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A calibration procedure (also one interrupted by releasing the footswitch)

can be repeated after three minutes at the earliest. During this time, the

calibration key remains locked.

6.4.2 Calibration of the touchscreen

Recalibration of the touchscreen may become necessary when the touch-sensitive fields of the touchscreen (not visible) and the presentation of the keys on the screen do no longer coincide. This becomes apparent if the function key, if pressed, responds only sporadically or in extreme cases not at all. As from software version 1.3 the recalibration is only possible in the Service mode (see Section 7.8.10).

6.5 Activation of Ready mode and treatment

Key Symbol Display Remarks

Standby/Ready

No

Visible only if the device is in "Standby. By pressing this key, the device switches to the "Ready mode (laser is active).

Ready/Standby

Visible only if the device is in "Ready mode. By pressing this key, the device switches to the "Standby mode (laser not active).

After you pressed the "Standby/Ready" key, the laser switches to the "Ready mode and is then ready for operation. This means, that when you press the footswitch, laser radiation of the selected parameters is emitted from the end of the applicator. On doing so, the "Standby/Ready symbol turns into the "Ready/Standby" symbol and the laser warning sign appears on the screen (Figure 7, page 22).


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Figure 7: "Ready" menu in Burst mode with handpiece

6.5.1 Releasing the treatment beam

The treatment beam is emitted with the selected operating parameters by pressing the

footswitch. Releasing the footswitch instantly stops the emission of laser radiation.

On depression of the footswitch, Class 4 laser radiation will be emitted

from the end of the fiber/handpiece. Make sure to comply with all relevant

regulations for the protection against unintentional laser radiation effects.

Instantly press the Laser STOP button in the event of dangerous

malfunction.

Emission of laser radiation is indicated acoustically by a warning sound and optically by the yellow blinking laser emission indicator located directly above the fiber output.

If during lasing the symbols "+ + +" or "- - -" appear below the fluence or

power display, the device detected a positive or negative deviation of the

output values of more than 20%.

After a longer period of inactivity in "Ready" mode, the device will automatically switch to the "Standby mode.

6.5.2 Switching the device off

- Switch to "Standby" mode. - Turn the key switch anticlockwise as far as it will go. - Switch the power switch on the rear panel of the device to "0". That way, the

device is completely disconnected from line voltage (all-pole disconnection).


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7 Software description: Service mode

7.1 Boot process

The QuadroStar is controlled by an 80386ex. This is a PC without keyboard, mouse and screen. The BIOS is set in such a way (default), that all keyboard and screen data are rerouted from and to the serial port. If a PC (laptop) is connected to the service port via a null-modem cable it can act as keyboard and screen within a terminal application. The example terminal application used here is HyperTerminal (component of Windows).

Figure 8: HyperTerminal

Figure 8 shows a conventional boot sequence. After "Starting ROM-DOS..., QuadroStar software is launched automatically. To achieve correct communication, it is necessary to configure HyperTerminal appropriately.


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7.2 Configuration of HyperTerminal

Windows 2000 german Windows 98 SE english

First, the port and the transfer protocol have to be set. This can be done only after the disconnection of an existing connection.

Then, choose the port.

Afterwards, configure the port.


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Finally, check the terminal settings.

If all settings and the connection are correct, the terminal application can display additional information of the QuadroStar.

7.3 Capture text

If a fault occurred, you can simply log additional information. To this end, activate the "Capture Text..." function of HyperTerminal.


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On activation, the following dialog box appears. In this dialog box, choose the storage path. Data is always stored as ASCII file. Leave the default extension "*.TXT unchanged. Finally, click on "Start.

At the bottom right in the status bar, "Capture is displayed as being active. All screen information newly received is logged, while the screen contents visible so far is not. Hence, it is necessary to activate the logging function first and then start the desired action on the QuadroStar.


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To finish logging, activate the corresponding function!

This is to be done in the same was as the start. Two options are available: "Stop serves to close the log file, "Pause and "Resume act as pause/resume buttons and do not close the file. Please note that the file is saved only by closing it!


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7.4 Main menu

See Section 6 Software description: Operating mode.

7.5 Tools Menu

See Section 6 Software description: Operating mode.

7.6 Menu for language selection

The menu for language selection appears, when you depress and hold the control knob (joggle) and additionally press the "TOOLS key. Every key pressure on one of the languages will instantly replace all translated text fields and take you back to the previous screen. With "Return", you return to the previous menu without changing the language.

7.7 Service code

The Service utility is part of the software. Its activation requires the entry of an access code. Access is possible from all warning, error and information screens and from the language-selection menu. With the joggle held depressed, press the "RETURN", "EXIT" or "CONFIRM" key. This will launch the "ENTER SERVICE CODE" menu.

When you enter the service code "3641", an asterisk is displayed between the "RETURN" and "CONFIRM" keys for every character entered. Conclude the entry with "CONFIRM". In case of erroneous entries, the following warning message appears:


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Press "RETURN to return to service code entry, which can be repeated several times.

7.8 Service mode

The Service mode is intended only for authorized personnel (trained service technicians). The user (physician) has no access to this mode. The Service mode provides all functions necessary for updating and troubleshooting. The displayed plain text messages and prompts are not translated; they appear in English only. With "EXIT", the Service mode is exited and the device software started with the wavelength selection menu.

7.8.1 Download

The "DOWNLOAD function serves to copy files from the terminal computer (laptop) to the hard disk of the QuadroStar computer. To this end, the two serial ports are automatically switched from the terminal mode to a data transfer mode. For file transfer, the internationally established Zmodem protocol is used. The basic settings are 19200 baud, 8 data bits, no parity, 1 stop bit (see Section "Configuration of HyperTerminal).


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Pressing the "ABORT key takes you back to the Service menu. The QuadroStar is now waiting for the first byte sent from the terminal computer. This first byte may be either a key pressure or the beginning of the data transfer. The moment data is sent/received via the port, the screen switches to the status display.

Once this screen is active, there is no return for the time being. Either one or several files are transferred or the system waits for approximately 90 seconds. The QuadroStar tries ten times to communicate with the terminal computer by repeatedly sending a request. However, data transfer must also start within this period of 90 seconds.


1520 99 009 page 31 of 85

Start file transfer by activating the "Send file..." command on the "Transfer" menu.

In the appearing dialog box, choose the file to be sent using the "Browse..." button or directly enter the file name.


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It is important that you choose the correct protocol type from the corresponding list box. Then, click on "Send.

Immediately after having clicked the "Send button, the status display of the send process appears.

The status display of the QuadroStar corresponds with the status display of the terminal. The number of REPEAT actions depends on the system and varies between 0 and 200. By the entry of placeholders (e.g. *.qtx or *.*) in selecting the files for transfer, it is possible so send several file with a single download action.

Caution: When using placeholders, take care that you do not include wrong files in the transfer. Wrong files will fill the hard disk and give rise to the error message "Not enough disk space". It is impossible to delete files sent by mistake from Service mode! In this case, the controller board must be returned to Asclepion Laser Technologies GmbH.


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If you send several files, the number of files to be transferred, the progress of transfer of the current file and the total progress of file transfer are displayed. The QuadroStar treats every file individually. The end of file transfer is indicated by the "TRANSFER END message and the display of the "CONTINUE key.

Pressing "CONTINUE takes you back to the Service menu. Except for the system files (autoexec.bat), all files created by Asclepion Laser Technologies GmbH (EXE, QTX, DAT, etc.) are provided with an integrated checksum. This checksum will be checked after the transfer of every individual file. At the time of transfer, every file exists twice. Only if the checksum check was successful, the old file will be replaced by the new one.

Unless you switch off the device, the old software will be operative in the memory.

In the case of transfer errors or abortion, you must not exit the Service menu. Repeat

the download action until it is successful.


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After a complete update, you must switch off the QuadroStar in the Service menu with

either key switch, Laser STOP button or power switch!

Exiting the Service menu is forbidden, because of the storage of new data files, while

older service software is still residing in the memory.

7.8.2 Digital IN

This function serves to display the logic levels of the input signals at the PIO.

Signal code Signal name Type of signal generation Checks

FC FiberCheck Microswitch at SMA coupling Fiber connection

HPD* HandPieceDetect 4bit coding plug at fiber Fiber type

FT FootSwitch 2 contacts in footswitch Pressed

DI DoorInterlock Door interlock connector Closed in Ready mode

CALI_SW CalibrationSwitch Microswitch in calibration port Fiber connection

J_Dir JoggleTurning Direction Evaluation of phase position left/right

* Handpiece detection (HPD) is module-dependent. The figure shows the example for the diode laser. Switch over is by tapping on the LBO wavelength. Then, the handpiece detection for LBO is displayed.

7.8.3 Digital OUT

On activation of this function, the states are ascertained and displayed. Signal WD1 is permanently switched over by the interrupt. The display is not continuously updated. Select the signal to be tested by turning the joggle. To change the state, press the joggle.


1520 99 009 page 35 of 85

Signals from PIO

Signal code Signal name

LWARN Laser Emission Warning

0 LED in module color, beeper off 1 LED yellow, beeper on

WD1 WatchDog Signal Trigger signal (switched by interrupt)

MONO MonoFlop Trigger signal (not used)

MDL_ON Modul ON 0 disable diode current 1 enable diode current

TEC_1_ON TermoElectricalCooler 1 0 disable TEC LBO 1 enable TEC LBO

TEC_2_ON TermoElectricalCooler 2 0 disable TEC DIODE 1 enable TEC DIODE

Signals on IC bus

Signal code Signal name

WARNLAMP Warning lamp 0 Relay contact closed 1 Relay contact open

CHANGE MODULE Module change 0 LBO module 1 Diode module

K2 Not used

BOOTSTRAP BOOTSTRAP on/off for display programming

FAN 0 Fan bit 0 00 50% fan power 01 75% fan power 10 75% fan power 11 100% fan power

FAN 1 Fan bit 1 See FAN 0

DISPLAY_ON Display Power On 0 Display off Communication error device off 1 Power On

If the DISPLAY_ON signal was set to "0", the only thing you can do is to restart the device (switch it off completely and then on again).

7.8.4 Analog IN/OUT

Beside the Main menu and the Calibration menu, this is the third possibility to switch the laser device to Ready mode. White fields are display fields only, except for the Ready key and the second wavelength. Blue fields are keys.


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TEC TEC voltage of calibration port

FREQ_PS Voltage amplitude of the current signal fed back by the diode driver (in digits)

TEMP_KK Temperature of aluminum heat dissipator (Heat Exchanger)

TEMP_HS Temperature of heat sink (Heat Sink) of diode module (LBO without measured value)

MEAS_LO Amplitude of current transformer: Low

MEAS_HI Amplitude of current transformer: High

The driving voltage can be adjusted by touching the DRIVE key and operating the joggle (0 1.8V @ LBO and 0 2.5V @ diode laser). The Ready key releases the footswitch. The laser is operated in cw mode.

With the LBO, make sure to set a low voltage (less than 1V) first and then

check the output power. The emitted output power should not exceed

5.5W. If you set a too high driving voltage, the current generated may be

too high and damage the LBO!

To check the pilot beam intensity, touch the PILOT key and operate the joggle. The display of pilot beam intensity is in digits of the DAC.

EXIT takes you back to the Service menu.

7.8.4.1 Power Adjust

The LBO and the diode have non-linear characteristics. Three adjustment points serve to approximate these characteristics sufficiently accurate. By touching the ENERGY ADJUST key, the label turns to SAVE in the upper half of the button (blue), while the bottom half turns white displaying the power to be adjusted. The SAVE key is inoperative unless it has turned entirely blue. The energy values of LBO and diode have to be adjusted individually (selection via wavelength keys). Adjustment procedure:

1. Connect the fiber for the adjustment (calibration or handpiece fiber) 2. Position the energy meter in front of the fiber end.

You must not perform energy adjustment without using an energy meter! 3. Touch ENERGY ADJUST key. 4. Adjust approximate DRIVE voltage, with which the power displayed in the SAVE key is obtained. 5. Switch to Ready and start lasing.


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6. Correct DRIVE until the power is correct.

The output power is temperature-dependent. It varies with switching on the Thermo Electric Cooler. The variations have a time constant of several seconds.

7. If DRIVE has been adjusted and the variations are symmetrical around the specified power, emit laser pulses for 30 seconds continuously. The measured values are averaged over this period.

8. After thirty seconds, the laser automatically switches to Standby and the SAVE key turns entirely blue.

9. If you are satisfied with the result, press SAVE. Then, immediately the next power stage is displayed.

10. Repeat Items 6 through 9 for the second and the third adjustment values. 11. With the third SAVE action, the new data is written to the memory and the key label turns to

ENERGY ADJUST again. If the adjustment procedure is exited before it has been completed, e.g. by errors, warnings or pressing EXIT, the result of the measurements taken so far will be lost.

Approximate values for the drive voltage to be adjusted:

Power LBO 532 Diode 808 nm Diode 938 nm Diode 978 nm

0.5 Watt 0.6 ... 0.8 -- -- --

1.0 Watt 0.7 ... 0.9 V 0.6 ... 0.8 V 0.4 ... 0.7 V 0.4 ... 0.6 V

2.0 Watt 0.9 ... 1.1 -- -- --

4.0 Watt -- 0.8 ... 1.0 V 0.7 ... 0.9 V 0.7 ... 0.9 V

5.0 Watt 1.4 ... 1.6 V -- -- --

20 Watt -- 2.0 ... 2.3 V 2.0 ... 2.3 V 2.0 ... 2.3 V

Assessment of power adjustment:

At the end of the adjustment procedure, the following information appears on the laptop:

DIODE LBO red 0 [P 1.000] [D +63.000]

[C +64.720]

[M0+152.320]

[M1 +60.340]

red 1 [P 4.000] [D +94.000]

[C +96.520]

[M0+221.660]

[M1 +87.020]

green 0 [P 0.500] [D +69.000]

[C +70.340]

[M0+150.400]

[M1 +59.740]

green 1 [P 2.000] [D+106.000]

[C+108.140]

[M0+231.120]

[M1 +90.920]


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red 2 [P20.000] [D+228.000]

[C+229.260]

[M0+255.000]

[M1+235.560]

All Offsets in Digits

All Rises in Digit per Watt

1 Digit = 9.804 mV DAC Drive

1 Digit = 19.608 mV ADC Check, Meas,

Tec

DriveRise (810) +10.333 +8.375

DriveOffset (810) +52.667 +60.500

CheckRise (810) +10.600 +8.296

CheckOffset (810) +54.120 +63.335

MeasRise (810) +23.113 +9.284

MeasOffset (810) +129.207 +49.885

green 2 [P 5.000] [D+158.000]

[C+160.160]

[M0+255.000]

[M1+140.460]





Tec

DriveRise (532) +24.667 +17.333

DriveOffset (532) +56.667 +71.333

CheckRise (532) +25.200 +17.340

CheckOffset (532) +57.740 +73.460

MeasRise (532) +53.813 +16.513

MeasOffset (532) +123.493 +57.893

Bold text is of particular interest.

"red" means the diode module and "green the LBO "810" and "532" are wavelengths in nm

For the assessment, it is important to know that the software processes all control variables in digits. A digit is the smallest step a digital-to-analog converter (DAC) can output or an analog-to-digital converter (ADC) can read. ADC und DAC have a different resolution (see printout). Rise and offset (point of intersection with Y axis) are stored. These are the constants, which describe two equations of a straight line. Y = m * X + n Digits = Rise * Power + Offset The equations are always mapped in a coordinate system with Y = f(X) or Digits = f(power). With three measuring points, two straight lines are produced from point to point. The points red 0, red 1 and red 2 represent these three measuring points. In the square brackets, the Power (P = X-axis) and Digits (Y-axis) are given. The letters used have the following meaning: D stands for Drive (drive value), C for Check (test voltage), M0 for low-channel current measurement and M1 for high-channel current measurement. The drive value (Drive) is supplied as control variable to a PWM (pulse width modulation) directly behind the DAC. At the same time, this voltage is amplified two times and applied to the DAC. Thus, for an ideal amplification of 2.0 the curves for Drive and Check coincide. As the amplification is not ideal, the test voltage (Check) deviates. It can be seen, that for Drive and Check the straight lines are minimally bent downward after the middle measuring point. This means that the rises are of the same order of magnitude, and the rise of the second straight line is minimally smaller. The offsets are the result of computation and should have the same order of magnitude.


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Diode

0

50

100

150

200

250

0,0 5,0 10,0 15,0 20,0 25,0Power

Dig

it

Drive

Check

LBO

0

50

100

150

200

250

0,0 2,0 4,0 6,0Power

Dig

it

Drive

Check

In order to obtain a sufficiently large delta Digits also with low powers, the current measurement was split into two separate ADC channels by means of two measuring resistors. The upper measured value of the "Meas 0" curve is irrelevant because of the saturation of the ADC. Therefore, the lower section of the "Meas 1" curve can only be used for low powers (below the middle measuring point). In the upper measuring range, the curve of "Meas 1 is used. This results in rises and offsets of the two measuring curves being extremely different. Only the lower measurement curve is used for the adjustment of the LBO laser.

Diode

0

50

100

150

200

250

0,0 10,0 20,0Leistung

Dig

it

M eas 0

M eas 1

Ger ade 0

Ger ade 1

LBO

0

50

100

150

200

250

0,0 2,0 4,0 6,0Power

Dig

it

Meas 0

Meas 1

Gerade 0

Gerade 1

7.8.4.2 TEC Adjust

The device has a calibration port, which is used for checking the output power. Inside the port, a Thermo

Electrical Cooler Element is arranged. When power is sent to the port, the TEC delivers a measurable voltage. With the same power applied, every TEC delivers a similar but not the same voltage. For this reason, it is necessary to determine the TEC constant. The TEC constant is wavelength-dependent and must be determined for both modules. Typically, the constant is invariable. It is determined when the device is commissioned and when the port or the controller board have been replaced. To this end, first the powers of both wavelengths have to be adjusted! Afterwards, activate TEC Adjust and follow the displayed prompts.


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Three seconds after a fiber capable of being calibrated has been connected the laser device automatically switches to the Ready mode.

Next, laser radiation is continuously emitted into the calibration port over about three minutes by actuation of the footswitch. In doing so, the device automatically varies the power. At the end of the cycle, the laser device automatically switches to Standby mode. Any fault or interruption in the calibration cycle by means of the footswitch will result in complete abortion of the calibration procedure. The TEC adjustment is based on heat detection. A new cycle can be started only, if the calibration port has cooled down to an acceptable temperature. Accordingly, the TEC Adjust key is locked for that period. If the calibration procedure was successful, the values should be stored with the SAVE key. By pressing RETURN, the adjustment menu is launched again. You can then repeat the procedure after a wait time (cool-down). Assessment of TEC adjustment: At the end of the adjustment procedure, the following information is displayed on the laptop:

DIODE LBO


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red 0 [P 4.000][T +32.429]

red 1 [P12.000][T +90.749]

red 2 [P20.000][T+153.908]





Tec

DriveRise (810) +10.333 +8.375

DriveOffset (810) +52.667 +60.500

CheckRise (810) +10.600 +8.296

CheckOffset (810) +54.120 +63.335

MeasRise (810) +23.113 +9.284

MeasOffset (810) +129.207 +49.885

TecRise (810) +7.290 +7.895

TecOffset (810) +3.270 -3.990

green 0 [P 1.000][T +8.368]

green 1 [P 3.000][T +24.498]

green 2 [P 5.000][T +40.007]





Tec

DriveRise (532) +24.667 +17.333

DriveOffset (532) +56.667 +71.333

CheckRise (532) +25.200 +17.340

CheckOffset (532) +57.740 +73.460

MeasRise (532) +53.813 +16.513

MeasOffset (532) +123.493 +57.893

TecRise (532) +8.065 +7.754

TecOffset (532) +0.302 +1.236

Bold text is of particular interest

"red" refers to the diode module and "green" to the LBO

"810" and "532" are the wavelengths in nm

Drive, Check & Meas are not of interest here and part of "Power Adjust" For the assessment, it is important to know that the software processes all control variables in digits. A digit is the smallest step a digital-to-analog converter (DAC) can output or an analog-to-digital converter (ADC) can read. ADC und DAC have a different resolution (see printout). TecRise and TecOffset (point of intersection with Y axis) are stored. These are the constants, which describe two equations of a straight line. Y = m * X + n Digits = TecRise * Power + TecOffset The equations are always mapped in a coordinate system with Y = f(X) or Digits = f(power). With three measuring points, two straight lines are produced from point to point. The points red 0, red 1 and red 2 represent these three measuring points. In the square brackets, the Power (P = X-axis) and TecDigits (Y-axis) are given. For the TecRise rise, typical values are 70 ... 80 mV/W measured at TEC or, amplified two times and A/D converted, 7.0 ... 9.6 Digits/W. Theoretically, the Tec constant (rise) is always the same. However, in practice, a slight deviation appears at higher powers. Therefore, Rise and Offset should always be of the same order of magnitude.

Diode

0

50

100

150

200

250

0,0 5,0 10,0 15,0 20,0 25,0Power

Dig

it

Tec

LBO

0

50

100

150

200

250

0,0 2,0 4,0 6,0Power

Dig

it

Tec


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7.8.5 Standard Initialization

The Standard Initialization function clears the EEPROM on the controller board, sets the language of the user interface to English and the brightness of the display to a medium value. At the same time, the old initial values are deleted. Additionally, it is possible to enter the Serial Number and the date of manufacture of the device. The corresponding data are given on the type label of the device. For control, the data is also stored to the memory holding the module data. At every system start, data is compared with each other. When exiting the software, data is always rewritten, even if there was no change.

7.8.6 Date & Time

This submenu allows you to set date and time. For that, just activate the corresponding field, set the new value by means of the joggle and confirm the entry.

Date and time are to be set before entering the Serial Number (Standard Initialization). When the device is commissioned, the time is set to 00:00:00 and the date to 01.01.1980. If you enter the Serial Number first, 01.01.1980 will be stored as commissioning date.

7.8.7 Module Data


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In this submenu, you can check the module data.

Designation Description Entry

S/N Module Serial number of laser module Outside the device, in the factory

Date Module Date of manufacture of laser module Outside the device, in the factory

S/N Device Serial number of device In Standard Initialization

Date Device Date at which S/N was assigned to device Automatically when S/N is entered in the Standard Initialization menu

Ready On Time the device was in Ready mode hat (the number in brackets refers to the storage cycles)

At every Standby

Pulses Number of rising slopes of laser current (pulses) At every Standby

Energy Summed up total energy At every Standby

CaliPowFac Calibration factor (the number in brackets refers to the storage cycles)

By SAVE at the end of calibration (activated from Tools menu)

Service Date of service mode activation (typically the current date)

At every exit of Service mode by touching the EXIT key

CheckRise Rises of the two curves for checking the drive value

By SAVE of the last value at every energy adjustment

CheckOffset Offset of the two curves for checking the drive value



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MeasRise Rises of the two curves for checking the diode current


MeasOffset Offset of the two curves for checking the diode current


TecRise Rises of the two measuring curves of the calibration port (TEC constant)


TecOffset Offset of the two measuring curves of the calibration port


Power Power range of module Outside the device, in the factory

WL Wavelength of module Outside the device, in the factory

CtrlCnt Number of storage cycles for these data At every write cycle

7.8.8 Error List

The error list is a ring memory holding 15 errors. The first error on the list is always the most recent error. The oldest error is shifted out at the end of the list. Errors are registered with date and time. The last but one figure is the line number of the error text of the language file. In the example given above, the last error occurred on Wednesday, March 3, 2004 at 16:02. It was Error 23 (see table below): "Power supply. The last figure, "+412" is the error code (see Section Error Messages), which further specifies the power supply error. A triple minus does not mean an error. With the Up/Dn keys, you can switch between the two pages. Every module has its own list. By touching "RESET, the error list of the activated module is reset. The language files, e.g. DEUTSCH.QTX, are ASCII text files that can be opened with any editor (e.g. Notepad). If QTX files are not automatically associated with Notepad, you can create a corresponding link under Windows. Due to ongoing technical development, the language files will change. Always see to it that the language file matches the software version and that the correct language file is selected in troubleshooting.

1 CONFIRM


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2 CONTINUE

3 RESET

4 ABORT

5 EXIT

6 RETURN

7 TURN OFF

8 TOUCH HERE

9 TOOLS

10 ENTER SERVICE CODE

11 CAUTION

12 FAULT

13 Communication code ???

14 Service interfaces error code ???

15 Setup code ???

16 Wrong laser module

17 Unknow applicator no. ???

18 Fiber changed no. ???

19 Wrong fiber no. ???

20 Access denied

21 Door interlock

22 Fiber not connected

23 Power supply code ???

24 Temperature too low code ???

25 Temperature too high code ???

26 Footswitch code ???

27 Please plug the ??? nm hand piece into calibration port

28 Please remove the hand piece from calibration port

29 Please press the foot switch until the SAVE button appears

30 Press SAVE to store the new calibration data or RETURN

31 Please use a new Fiber

32 Calibration ok.

33 Please select the wavelength

34 Please use protective goggles, laser applicator and fiber connector for ??? nm

The text lines are numbered consecutively beginning with "0".


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7.8.9 TecStar

TecStar is the future menu item for external skin cooling (not included in software version Vs 1.1). Without the corresponding system connected, an error message is to be expected.

7.8.10 Calibration of the touchscreen

Recalibration of the touchscreen may become necessary when the touch-sensitive fields of the touchscreen (not visible) and the presentation of the keys on the screen do no longer coincide. This becomes apparent if the function key, if pressed, responds only sporadically or in extreme cases not at all.

- Activate the "Service menu. - Press the "Touch Adjust" key for some time. - Follow the prompts appearing on the screen.

For touching the adjusting cross hairs, use a pointed, but not scratching object (e.g. a toothpick, etc.). The more accurate you mark the cross hairs, the better the coincidence will be.

During the calibration the equipment may not be turned off. In this case

irrelevant key coordinates are in the memory. In any case the calibration must

be led to the end, following the instructions. She can be repeated three times.

If she isn't successful after the third one, standard values are loaded. If the data are destroyed nevertheless, so no button reacted, you can restore the standard settings: To do this connect your laptop computer to the system and press the C button. Now the keys on the touch screen should be found at her approximate right place. Please testing carefully. With "Touch Adjust" is only a fine tuning possible.


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8 Error Messages

Presently, 14 error messages exist on the system. To facilitate the localization of errors, a code number is added to the messages. When the device is operating, the three question marks in the "Text" column are replaced by the respective code numbers and thus not visible on the screen. Consequential errors are possible. The previous code is given in brackets. In most cases, this error is the real cause of the fault. Fibers are always detected twice. Here, the numbers given in brackets are meaningless.

Text Code Description Recommended action

Communication code ???

110 DCU error Display Controller board

Wiring

111 Error in initializing serial port for display 112 Cannot empty port buffer 113 Unable to send or write to buffer 114 Did not receive ESC from DISPLAY 115 Byte missing in display response 116 No free temporary buffer (out of memory) 117 Instruction missing after ESC from display 118 Checksum error in display response

130 IC error Controller board

Wiring

Laser modules

DTI

(send to manufacturer)

131 Transfer ended, no errors 132 Transfer busy 133 General error 134 No data in block 134 No acknowledge on data 135 No acknowledge on address 136 Device not present 137 Arbitration lost 138 Time out occurred 139 Slave mode error 140 Initialization (not done) 141 Already error before StartTransfer

150 Module error Laser module

Controller board

151 No module

160 PIO error

161 Wrong port called Software update

Service interface error

-1 No port initialization of console for download or

Controller board

Software

code ??? -1 Port already open -2 Port not installed -3 Unable to create buffer


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-4 Port is not open -5 Value outside the permissible range -6 Timeout in writing -7 Port table is full -8 File not found -9 Zmodem Transfer Aborted -10 Xmodem: End of File not recognized -11 Disk Full -12 Checksum error -13 Can't create file after check sum

Setup code ???

210 User Data on onboard EEPROM Controller board

Standard Initialization

211 Faulty reading of user data from EEPROM 212 SN DeviceType not valid (out of range) 213 SN DeviceCnt not valid (out of range) 214 Device SN unequal to LBO Controller board

Module dongle

Standard Initialization

215 Module SN unequal to LBO 216 Device SN unequal to DIODE 217 Module SN unequal to DIODE

220 Language file error Controller board

Software

221 Faulty opening (existence of file) 222 Checksum error 223 String reading error

230 Fiber file error Controller board

Software

231 Faulty opening (existence of file) 232 Checksum error 233 Reading error 234 Reservation of memory impossible

Wrong laser module

A secondary process has unintentionally switched to the other module.

Controller board

Software

Switch OFF/ON

Unknown applicator no. ???

0..15 This fiber is not suitable for this module. The number of detected fiber code is displayed.

Wrong/defective coding

Replace fiber

Fiber changed no. ???

0..15 Number of detected fiber code

For information only

Wrong fiber no. ???

0..15 This fiber is not suitable for this module or process. The number of the detected code is displayed.

Wrong/defective coding

Replace fiber


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Access denied Wrong service code Touchscreen defective

Calibrate touchscreen

Door interlock Open Door Interlock in Ready mode Shorting plug missing

Wiring

Controller board

Fiber not connected

No contact at SMA coupling Contact disconnected

Wiring

Controller board

Footswitch code ???

311 Footswitch already depressed Wiring

Footswitch

Controller board

312 Calibration key depressed Wiring

Calibration port switch

Controller board

Power supply code ???

410 Diode driver error Software update

Readjustment

Controller board

Diode driver

Current measurement

411 Test voltage out of range 412 Measured value out of range +50% 413 Measured value out of range -50% 414 Measured value lost 415 Calibration error

416 Calibration port error Rise < 6

Temperature too low

code ???

511 512

Heat Exchanger (aluminum heat sink) Heat Sink

Wait for warm up

Sensor defective (diode module or heat sink)

Controller board

Wiring

Temperature too high

code ???

511 512

Heat Exchanger (aluminum heat sink) Heat Sink

Let device cool down

Sensor defective (in diode module or at heat sink)

Controller board

Wiring


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9 Laser modules

9.1 Laser safety

All laser modules used are Class 4 laser devices as per DIN EN 60825-1

(IEC 825-1). In using the lasers, observe the relevant safety regulations on

the operation of laser devices (in Germany: Regulations for the Prevention

of Accidents BGV B2).

When servicing the device, make sure to wear laser-protective eyewear in

compliance with DIN EN 207 (Protection: DL 4 or higher for the respective

wavelength) when the laser is operating.

Never look directly into the laser beam. Emitted visible and invisible laser

radiation may cause irreversible skin and eye injuries and changes to

organic material.

9.2 Handling diode lasers

Diode lasers are sensitive to condensation, dust and electrostatic discharge.

Diode lasers are very sensitive to overvoltage. Therefore, when handling such

lasers, fitter, workbench and tools must be grounded. To provide ESD

(electrostatic discharge) protection, in inactive mode always take care to

ensure that the supply terminals are shorted (by a relay contact of the power

supply if built-in, or by a jumper if removed from the device).

9.3 LBO laser module

The LBO laser module is purchased completely from an external supplier. Therefore, it must never be opened, as this will void any warranty and liability claims. Thus, servicing this module is restricted to a complete replacement of the module. Defective modules have to be returned immediately to Asclepion Laser Technologies for lodging a complaint to the manufacturer.


1520 99 009 page 51 of 85

Any mechanical modification of the equipment including loosening of screws

is forbidden. Non-compliance will make void any liability and warranty claims.

Caution: Diode current!

The LBO laser has no current limiter. The maximum diode current specified

on the label must not be exceeded.

9.3.1 Principle of LBO disc laser

The LBO disc laser is a diode-pumped solid-state laser that uses a thin ND:YVO4 disc as active medium. The laser resonator is of folded design; doubling of the fundamental wavelength to green light of 532 nm is by a non-linear process in the LBO crystal.

Output mirror

End mirror

ReflectorPump diode

Pump opticsLaser disc

Neodymium:Vanadate (Nd:YVO )4

Lithium Triborate(LBO) Crystal

Fundamental wave

Frequency-doubled

beam

Figure 9: Principle of the LBO disc laser


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1520 99 009 page 52 of 85

9.3.2 Design of LBO disc laser

Figure 10: Design of LBO laser

current supply terminals

Bottom view

Side view

Front view

Through hole for M4 mounting bolt

Through hole for M4 dowel bolt

D-Sub interface

Contact surface for temperature control

Through hole for M4 mounting bolt

Laser aperture Fastening screw thread for fiber port assembly

Short-circuiting bridge (jumper)


1520 99 009 page 53 of 85

9.3.3 Terminal assignment

The supply terminals are labeled with "+ and ". For the pin assignment of the D-Sub connector, refer to Figure 11.

Figure 11: Pin assignment of LBO D-Sub connector

9.3.4 Replacement of LBO disc laser

The LBO laser module must be replaced, if at maximum current the required laser power is no longer attained. Before the replacement make sure the

- diode power supply is functioning properly - laser cooling system is working - fiber port assembly is correctly adjusted.

The LBO laser must always be replaced together with the TEC pcb, the latter

is factory-matched to the specific LBO laser module.


aparezca aqu.

1520 99 009 page 54 of 85

1. Remove device cover and front cover. 2. Remove the LBO fiber port assembly (see 11.1). 3. Disconnect the Sub-D connector. 4. Short out the supply terminals and unscrew the power cable. 5. Remove the three slotted nuts and the compression springs of the fastening bolts. 6. Carefully take the laser off. 7. Disconnect the TEC pcb connector. 8. Unscrew the TEC pcb. 9. Unpack the replacement LBO laser module

Before you can open the packaging of the LBO laser, the assembly must have

adjusted to room temperature to avoid condensation. Allow for approximately

two hours of temperature adjustment. Keep the original packaging for

possible later relocation or transportation.

Avoid external contamination of the beam exit window to prevent a decrease

of available laser power. Burnt-in dirt will void any warranty claims.

10. Clean the contact surface for temperature control and symmetrically stick on the heat-

conductive film. 11. Carefully put the laser module onto the fastening bolts, slip over the compression

springs (two weak ones at the front, one strong one at the rear) and screw on the module by means of the nuts (max. torque at front side: 10 Ncm; rear side: 40 Ncm)

12. Screw on the supply terminals (cable lug, toothed lock washer, washer, nut);

afterwards, remove the short-circuiting bridge!

When connecting the supply lines, make sure the polarity is correct, as even

low back voltage may result in irreversible damage.

It is not allowed to solder the supply wires to the disc laser.

13. Plug the connection cable into the 9-pin Sub-D connector. 14. Screw on the fiber port assembly (microswitch located at the bottom). 15. Connect the connection cable of the fiber port assembly with the DTI pcb. 16. Insert new TEC pcb and connect the connection cable. 17. Start the laser in Service mode. 18. Initialize the dongle. 19. Adjust the LBO fiber port assembly (see 11.1.1) 20. Adjust the laser.

9.4 Diode laser

9.4.1 Principle of diode laser


1520 99 009 page 55 of 85

The diode laser module is based on a high-power diode laser (HDL, see Figure 12). A GaAlAs laser bar is used as laser material. The different wavelengths are produced by various doping concentrations of the semiconductor materials. In the semiconductor, the current is converted to light with a conversion efficiency of approximately 50%. The rest of the fed in electric power is converted to heat that must be dissipated.

Figure 12: High-power diode laser

The HDL is cooled passively. Passive cooling means cooling without water. The lost heat of the laser bar is exclusively dissipated through heat conduction via a heat sink made of copper. The laser beam is shaped in the vertical plane (fast axis) by a microlens array (Figure 12) directly after the beam exit from the diode bar and in the horizontal plane (slow axis) by a so-called staircase mirror arrangement (Figure 13).

Figure 13: Staircase mirror

Supply terminal "+ Supply terminal "-

Short-circuiting screw

Microlens array

Laser bar Heat sink


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1520 99 009 page 56 of 85

9.4.2 Design of diode laser module

Figure 14: Diode laser module

9.4.3 Terminal assignment

The supply terminals at the diode are labeled with "+" und "". Additionally, the positive terminal is provided with a red ring (externally at casing duct). The pin assignment of the D-Sub connector is as follows:

Pin 1: NTC Pin 2: SDA (Dongle) Pin 3: SCL (Dongle)

Fiber coupling

Cylindrical lens

Staircase mirrors

Pilot laser

Temp. sensor LM 35

D-Sub interface

Short-circuiting bridge (only, if not connected to a

power supply)

Short-circuiting screw

(must be removed)

Temp. sensor NTC

Laser diode

Beam combiner


1520 99 009 page 57 of 85

Pin 4: Analog IN5 (LM 35 measuring signal) Pin 5: PWM_B1 (pilot diode) Pin 6: NTC Pin 7: + 5V (LM35, Dongle) Pin 8: GND (LM35, Dongle) Pin 9: GND (Pilot)

9.4.4 Replacement of diode laser

The diode laser module must be replaced completely, if the output power of the therapy laser is too low. For that, follow this procedure:

1. Remove the device cover and the front cover. 2. Remove the fiber port assembly (see Figure 17). 3. Disconnect the Sub-D connector. 4. Short out the supply terminals and unscrew the power cable. 5. Remove the three slotted nuts and the compression springs of the fastening bolts. 6. Carefully take the laser off. 7. Unpack the replacement diode laser assembly.

Before you can open the packaging of the diode laser, the assembly must

have adjusted to room temperature to avo

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