Lightmed LightLas 532 User manual

1
Service Manual
for the
LightLas 532
Medical Frequency Doubled
YAG Laser System
Directive 93/42/EEC
as amended by 2007/47/EC
Doc. No. : DC2000-532
Rev. No. : 05

2
Service Manual for the LightLas 532 Medical Frequency
Doubled YAG Laser
Only authorized Service personnel should attempt to perform the procedures contained within
this Service Manual. The manufacturer can organise detailed Service Training for authorized
agents.
The manufacturer will under no account accept any responsibility for any conditions arising as
a result of unauthorized maintenance or adjustments to the LightLas 532 Medical Frequency
Doubled YAG Laser.
This Service Manual should be fully studied and understood before proceeding to operate or
service the equipment. For further details relating to the operation of the LightLas 532 Medical
Frequency Doubled YAG Laser the Service Manual should be referred to.
CAUTIONS - Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
Any modification to the LightLas 532 Medical Laser will result in the necessity for it to be
reclassified.
CAUTIONS - US Law restricts this device to sale by or on the order of a physician.
This Service Manual contains confidential and proprietary information of the
manufacturer.
Manufactured by: LightMed Corporation, No.1-1, Ln. 1, Pao-An St.
Sec. 3,Shulin Dist., New Taipei City 23861, Taiwan
USA Address: 1030 Calle Cordillera, Suite 101, San Clemente, CA 92673
Tel No.: 949-218-9555 Fax No.: 949-218-9556
Copyright ©LightMed Corporation
EU Representative: Medical Device Safety Service GmbH
Schiffgraben 41, 30175 Hannover, Germany
Document Title: Service Manual for the LightLas 532 Medical Frequency Doubled YAG
Laser.
Document Number: DC2000-532
Document Revision History:
October 2001 - Draft prepared
March 2002 - Second version updated information
May 2002 - Third version with new Installation section, new drawings,
CE Mark information, Change to Revision 01
March 2003 - Rev.02 Modify drawings
February 2004 - Rev. 03 Safety Glasses description change; Delete Warranty
Statement
January 2005 - Rev. 04 Change EU Representative to ALF in ITALY

3
November 2010 - Rev. 05 Update the current modification, service procedure.

4
Contents of Manual
SECTION PAGE
1. INTRODUCTION 9
1.1 General 9
1.2 How to Use the Manual 10
2.SAFETY 11
2.1 Product Classifications 11
2.2 Warnings and Precautions 13
2.3 Optical Hazards 14
2.3.1 Nominal Ocular Hazard Distance (NOHD) 14
2.3.2 Avoid Exposure to Laser beams 15
2.4 Electrical Hazards 15
2.5 Safety Controls and Features 17
2.6 Product Labeling 20
3. PRODUCT SPECIFICATIONS 26
3.1 LightLas 532 System Specifications 26
3.2 CSO SL980, SL990 Slitlamp Specifications 29
3.3 Module Specifications 29
3.3.1 SystemBlockDiagram 29
3.3.2 Optical Elements Diagram 32
3.3.3 Laser Cavity Block Diagram and description 33
3.3.4 Remote Control description 34
3.3.5 Laser Diode source 34
3.3.6 Slitlamp Delivery Unit (Integrated model) 35
3.3.7 Laser Indirect Ophthalmoscope (LIO) Delivery Unit 37
3.3.8 Slitlamp Attachment LDU 38
3.3.9 Doctors Operating Microscope Safety Filter 38
3.3.10 Endoprobes 39
3.3.11 Laser Console Internal Modules 39
3.4 OptionalAccessories 49

5
4. PRINCIPLES OF OPERATION 52
4.1 General Description 52
4.2 LightLas 532 Laser Controls and Displays 55
4.2.1 Laser Console 55
4.2.2 Slitlamp Integrated Delivery Unit 60
4.2.3 LIO 63
4.3 CSO SL980, SL990 Slitlamp Controls 65
4.4 Detailed Description 69
5. INSTALLATION 72
5.1 Introduction and Requirements 72
5.2 Unpacking and Receiving Inspection 73
5.3 Tools and Equipment 75
5.4 Setting Up and Checking the Laser System 76
5.4.1 Preparation 76
5.4.2 Table and Slitlamp 77
5.4.3 Integrated Slitlamp Delivery Unit 78
5.4.4 Attachment Slitlamp Delivery Unit 80
5.4.5 Laser Console 86
5.4.6 Pre-Laser operation checks 87
5.4.7 Alignment Checks 89
5.4.8 Laser Indirect Ophthalmoscope 97
5.4.9 Endoprobe 101
5.5 Installation Record Sheet 102
6. MAINTENANCE 104
6.1 Operator / User Routine Maintenance 104
6.1.1 General Routine Maintenance Procedures 105
6.1.2 Laser Console Routine Maintenance 105
6.1.3 Slitlamp Delivery Routine Maintenance 106
6.1.4 LIO Delivery Routine Maintenance 106
6.1.5 Endoprobe Routine Maintenance 107
6.1.6 Operating Microscope Routine Safety Filter Maintenance 107
6.2 Calibration and Alignment Procedures for Console 107
6.2.1 Fiber link alignment 108
6.2.2 Aiming Alignment adjustment 110

6
6.2.3 Console Power Calibration checks 111
6.2.4 Earth / Ground resistance checking 113
6.2.5 Aiming Power adjustment 113
6.2.6 Remote Door Interlock connections 113
6.2.7 LightLas 532 Laser Power Calibration Procedure 115
6.2.8 Power Detector Calibration Procedure 122
6.2.9 Process for upgrading LightLas 532 software 127
6.3 Checking Delivery Units Laser beam alignment 138
6.4 Trouble shooting guide 139
6.4.1 Operator Trouble Shooting 139
6.4.2 Service Trouble Shooting 140
6.5 Error and Interlock Warning messages 142
7. WARRANTY STATEMENT 148
8. GETTING HELP AND PARTS 149
8.1 Contacting the factory 149
8.2 Service Report Form 151
8.3 Returning Parts 152
9. GLOSSARY OF TERMS 153
10. MAINTENANCE HISTORY RECORD 159
11. EUROPEAN COMMUNITY ISSUES 163
12. EMC Test Tables 165
LIST OF DRAWINGS / FIGURES
Figure Description Page
2.1 Safety Controls 17
2.2 Laser Console Safety and Controls Labels 20
2.3 Laser Console Labels 21
2.4(a) Integrated Slitlamp LDU with Labels (RH side) 22
2.4(b) Integrated Slitlamp LDU with Labels (LH side) 23
2.5 LIO LDU with Labels 24
2.6 Attachment LDU with Labels 25
2.7 Microscope Doctor Safety Filter with Labels 25

7
Figure Description Page
3.1 System Wiring Drawing 30
3.2 System Block diagram 31
3.3 Optical Elements Block Diagram 32
3.4 Laser Cavity Block Diagram 33
3.5 Integrated Slitlamp LDU Beam Diagram 35
3.6 LIO Optics Beam Paths 37
3.7 Attachment Slitlamp LDU Beam Diagram 38
3.8 Endoprobes diagram 39
3.9 Laser Console Internal Modules (Old Version) 39
3.10 Laser Console Internal Modules (New Version CE Mark Version) 43
3.11 New Laser Console Internal Modules (New Version CE Mark Version) 44
4.1 Laser Console Controls and Displays 55
4.2 Remote Control and Displays 56
4.3 Integrated Slitlamp LDU Controls 60
4.4(a) Attachment Slitlamp LDU Controls(Old One with Micromanipulator) 60
4.4(b) Attachment Slitlamp LDU Controls
(New One without Micromanipulator-Truspot) 61
4.5 LIO Controls 63
4.6 SL980 Slitlamp Parts List 65
4.7 SL980 Slitlamp Controls 66
4.8 SL990 Slitlamp Parts List 67
4.9 SL990 Slitlamp Controls 68
5.1 Packing Carton for Integrated LDU and Slitlamp 73
5.2 Portable Carry Cases for Console and LDU’s 74
Installation
1 Laser System Parts 76
2 Slitlamp mounted onto Table Top ready for Integrated LDU 77
3 Slitlamp arm ready for Delivery housing 78
4 Fit Delivery unit housing to the Slitlamp 78
5 Lock housing to Slitlamp when it is pushed against Chrome Stop screw 79
6 Align the keyways then fit the Zoom unit to the Delivery housing 79
7 Rotate the Zoom housing to the end stop 80
8(a) Haag Streit style Slitlamp with Tonometer mount ready for Attachment
LDU 81
8(b) Attaching Tonometer mount and Attachment LDU Mounting Arm to Zeiss
30SL 81
9(a) Lock the Haag Streit Attachment LDU Mounting Arm to the Tonometer
mount 82
9(b) The Zeiss Style Slitlamp with Attachment LDU Mounting Arm ready for
LDU 82

8
10 Moving Safety Filter between Binoculars and Microscope Housing 83
11 Safety Filter for Haag Streit style 83
Figure Description Page
12(a) Attachment LDU fitted to Haag Streit style Slitlamp with
Micromanipulator 84
12(b) Attachment LDU fitted to Zeiss 30SL Slitlamp with Micromanipulator 84
13 Original Illumination Tower 85
14 New modified Illumination Tower fitted 85
15 Attach the cables and connectors to the back panel of Laser Console 86
16 Attach the Delivery Fiber and Delivery Key to Laser Console 86
17 Initial Power on displays and outputs 87
18 Safety filter checks 88
19 Attach the Delivery fiber to the Zoom unit 88
20 Set the eyepieces and slitlamp ready to do alignment checks 90
21 Check Slitlamp focus on Target Rod and Laser focus of aiming beam 91
22 Checking Laser focus and manipulator operation on black material target 91
23 Check Slitlamp focus on Target Rod and Laser focus of aiming beam 92
24 Adjust the Attachment LDU Spot Size Focus using the Knob on the
Mounting Arm 93
25 Adjusting Micromanipulator Arm to verify Laser Spot is in Aperture
Center 94
26(a) Release the lock screw for the sideways movement adjustment 95
26(b) Adjusting sideways movement of Attachment LDU during alignment 95
27 Typical Laser settings for demonstration of the Laser System 97
28 Fiber and Delivery Key fitted to Console Front Panel 98
29 Fiber and Illumination Cable attached to LIO 98
30 Locking Set Screws and Rotation of Optics Tube during alignment 99
31 LIO of Keeler All Pupil Ⅱ100
6.6(a) Measure the laser output power 108
6.6(b) connect a brand new fiber into the laser output aperture and set up 108
6.7 Aiming Alignment adjustment 110
6.8 Aiming Module 110
6.9 Remote Interlock Connections 114
LIST OF RECORD SHEETS / FORMS PAGE
Record Sheet 1 Installation Record Sheet 102
Record Sheet 2 Fiber Focus Checking Record Sheet 106
Record Sheet 3 Power Calibration Checking Record Sheet 112
Record Sheet 4 Service Report form 151
Record Sheet 5 Maintenance History Record 160

9
Section 1 INTRODUCTION
Contents
1.1 General
1.2 How to use this Manual
1.1 General
This manual is intended for the use of authorized service agents of the manufacturer. The aim of
this manual is to present an overview of the Operation and Safety requirements for the LightLas
532 Medical Photocoagulator Laser along with sufficient details and procedures to
troubleshoot and maintain the Laser System throughout its normal useful life.
This manual will not provide any details on actual treatment procedures and it is expected that
users of the Laser will have undertaken training prior to using the equipment.
Authorized service agents should not attempt to provide guidance to doctors and physicians on
actual treatment procedures.
The manufacturer and authorized sales agents assume no liability through the use of this Laser
System.
The manufacturer also assumes no responsibility for the actions of the authorized agents
although all efforts will be made to support and train the agents.
All care has been taken in the preparation and checking of this manual however there is no
guarantee provided that all the information is correct. The information provided in this manual
is subject to change without notice.
Only accessories that are designed and approved for use with the LightLas 532 may be used.
The Manufacturer and Distribution organization shall not be held liable or responsible for
damages or injury caused as a result of using untested and non-approved accessories. This
includes all Optical Fiber systems, Laser Delivery Units, Safety Filters, Safety Glasses and
Table units.
All maintenance and service work must be carried out by authorized service agents and only the
following procedures are allowed. Any service work carried out by non-authorized persons or
not to the procedures contained herein will void all warranties.
Before carrying out any of the procedures that follow in this manual pay particular attention to
the sections and warnings contained within on Safety and Precautions to be taken.
Many of the procedures detailed in this manual can result in exposure to hazardous Laser
radiation so ALWAYS observe eye safety precautions.

10
1.2 How to use this Manual
This manual is intended to provide you, the Service person, with sufficient technical details so
that you can maintain and repair the LightLas 532 Green Laser.
Section 2 of this Manual MUST be read before attempting any service work on the Laser
System so that you are aware of the precautions that must be observed.
Sections 3 and 4 provide details on how the LightLas 532 operates, all of the controls and
displays and the specifications for both the System and its various assemblies. You can read
these sections to gain a better understanding of the LightLas 532.
Section 5 should be read prior to Installation of the LightLas 532. Follow this section to ensure
that you follow all the correct steps when installing the Laser. At the end of the Section is the
Checklist and Report that must be completed and a copy sent to the manufacturer to show that
the unit is functioning correctly. You can use the Checklist at future Service visits to verify the
general operation of the Laser System.
Section 6 contains all the procedures that you should require to perform Maintenance,
Calibration and Alignment of the LightLas 532. It is recommended that you suggest to the
customer that their Laser have a Routine Maintenance performed every 6 months to ensure
correct reliable operation. If the customer does not agree to this then at the very least the Power
Meter must be calibrated every 12 months and the Earth connection checked. These procedures
are in Section 6.1 and 6.2.
Section 6 should also be used, if you have a problem with the LightLas 532, to help identify
which module or assembly to replace.
Section 7 details how to get help from the factory and has a copy of the Service report form to
use when you need help or wish to return faulty parts.
Use the Maintenance History Record in Section 9 to record all Service work carried out on any
LightLas 532 Lasers that you maintain.

11
Section 2 SAFETY
Contents
2.1 Product Classifications
2.2 Warnings and Precautions
2.3 Optical Hazards
2.4 Electrical Hazards
2.5 Safety Controls and Features
2.6 Product Labeling
This Laser has been designed and tested to function safely and correctly when used as indicated
in this manual.
Do not use this laser before reading and understanding completely this Service Manual.
It is important to remember that this laser emits high levels of visible laser radiation which
can cause permanent and irreparable eye and tissue damage. Always observe precautions
for laser safety including using warning signs, safety glasses and only operating the laser in a
treatment room that provides protection to casual observers.
2.1 Product Classifications
The LightLas 532 Medical Laser is a Class IV (4) laser product as specified in the
standard IEC60825-1 (2001) and the USA 21 CFR’s 1040.10, 1040.11.
The LightLas 532 MEDICAL Laser is classified as Class I Type B Electromedical
equipment as specified in the EN60601-1 standard.
The LightLas 532 MEDICAL Laser is classified as a Class II device according to the
FDA CFR21 regulations.
The LightLas 532 MEDICAL Laser is classified as a Class IIB Medical Device
according to the MDD 93/42/EEC (as amended by2007/47/EC).
The LightLas 532 has been designed to comply with the following standards.
Laser standards
IEC60825-1 (2007) Safety of Laser Products Part 1 : Equipment classification,
requirements and user’s guides
USA 21 CFR 1040.10, 1040.11 (1997) 886.4390 etc
IEC60601-2-22 (1995) Medical Electrical Equipment Part 2 : Particular
requirements for the safety of diagnostic and therapeutic laser equipment
Electrical standards
IEC60601-1 (1988) + Amendments A1 and A2 Medical Electrical Equipment
Part1 : General requirements
IEC60601-1-2 (2007)
USA UL 2601-1 (1999) Medical Electrical Equipment Part1 : General
requirements
JIS T1001 (1992) and T1002 (1992)
Others
MDD 93/42/EEC Annex II (as amended by 2007/47/EC)

12
IEC60601-1-4 (1996) + A1(1999)
ISO14971 (2007)
VBG-93
FDA 21 CFR 1010, 886

13
2.2 Warnings and Precautions
The following warnings apply to the LightLas 532 Laser and should be observed by all users.
DO NOT look directly into or at the Laser beam or at specular laser reflections. Direct and
reflected laser light can cause permanent eye injury.
DO NOT operate the laser unless observers are using the correct protective eyewear.
Protection is afforded by using protective eyewear having an optical density of OD4 (or
higher) at 532 nanometers wavelength. This information must be present on the eyewear.
DO NOT use objects, that can readily reflect light, in the vicinity of the Laser beam to
avoid reflecting the beam in a hazardous manner.
DO NOT use the Laser in the presence of flammable agents as the focused laser beam may
cause ignition. There is no AP/ APG protection.
Visible laser radiation is emitted from the Laser aperture during operation of the
equipment.
DO NOT try to service or repair the laser other than what is included in this manual.
Service should only be performed by an authorized agent of the manufacturer.
DO NOT use the Laser on a patient without first checking the operation of the Laser and
verifying the optical alignment of the treatment Laser beam.
ALWAYS use the lowest Power settings possible when treating a patient with the laser and
start the treatment at minimum Power.
ALWAYS set the correct spot size and/or use the most appropriate for the power setting
and type of procedure that is to be performed.
DO NOT put the Laser into TREAT mode until ready to operate on the patient.
DO NOT inhale any Laser Plume generated by the Laser during surgery. Personnel should
take suitable precautions such as wearing surgical masks or use Plume evacuation systems.
ALWAYS take particular care of the optical fibers that connect the Laser Delivery Units to
the Console to make sure they do not get damaged. Additional Clinical Warnings may be
found in Section 6.1.4 of the Operator Manual.
DO NOT place Multiple Portable Socket Outlets that are used for connecting the Mains
Power cables for each part of a System on the floor as fluid spillage may enter the Outlet
and create a Hazard. Also do not use more than one Outlet for a System and no extensions
cords.
DO NOT exceed the Maximum power rating for any Multiple Portable Socket Outlets
used and do not connect other devices that are not part of the System to the Outlet.
Connecting other equipment to the Outlet may overload the Outlet and may introduce an
unknown hazard condition due to EMC (electrical noise)
DO NOT use the Laser Console if the ambient temperature is outside the range of 15 to
35°C. This temperature range is the rated operating temperature limits where the Laser
system can be guaranteed to operate without any interruptions to normal use. Outside this

14
range of temperature it is possible for the Laser to go to an error condition where the word
“hold” is displayed and the system goes to Standby until the internal temperature returns to
within normal limits then the Laser can be used again but the error condition may reoccur
unless the rated temperature comes within limits.
2.3 Optical Hazards
Guidance for the Safe use of Lasers and Laser systems is found in the standard IEC60825-1, the
USA 21CFR 1040.10, 1040.11 and ANSI Z136.1 - 1986.
During normal operation of the LightLas 532 the operator is protected from Laser hazards by
built in optical absorption Safety Filters. All other personnel in the area should wear protective
eyewear to eliminate the risk of eye injury occurring.
The Optical density (OD) must be 4 or high than 4 and 532nm must be included in the
wavelength range on safety glasses. The Optical density (OD) and wavelength are marked on
safety glasses. For example in the following form:
OD4+ @ 375 - 532nm
Otherwise, the safety glasses are NOT suitable for eye protection. Safety Glasses are required
to have the CE Mark applied if used in the EU.
The LightLas 532 uses a Class II Laser Diode Aiming beam. The wavelength is 635 to 650
nanometers (nm), and the maximum power output is set at the factory to be less than 1mW
delivered to the Patients Cornea (eye) however it is always recommended to always use the
lowest practical aiming beam intensity during treatments.
The LightLas 532 Photocoagulator Laser has been classified a Class 4 Laser product according
to the standards quoted above. This classification is based on the Accessible Emission Limits
(AEL) as calculated according to the standards.
2.3.1 Nominal Ocular Hazard Distance (NOHD)
The Nominal Ocular Hazard Distance (NOHD) is the distance between the equipment and a
persons eye for which the optical power, from the equipment, entering the dilated pupil of the
person will be less than or equal to the Maximum Permissible Exposure (MPE) as specified in
the standards (i.e. less than a Class 1 Laser Output).
The calculated NOHD for the LightLas 532 with different Laser Delivery Units is:
5 meters at maximum power settings for the Endoprobes.
18 meters at maximum power settings and 1000m spot size for Slitlamp Delivery Units
20 meters at maximum power settings for LIO
Therefore when the Laser is in operation all persons that are closer than these distances to the
equipment should be wearing eye protection. These NOHD are calculated assuming that the
person would not be using any eye protection. If some eye protection is being used then the
distances would require to be recalculated.
Patients, where possible, should have the eye that is not been treated covered or protected in
some way from reflections.

15
2.3.2 Avoid Exposure to Laser beams
Assembly and Maintenance of the Laser System should only be performed by authorized and
trained personnel. The external housing of the Laser System should never be removed
otherwise you could be exposing yourself to dangerous levels of optical laser radiation and
potentially lethal electrical voltages.
Eye Safety Filters, designed to protect physician’s eyes from back scattered Laser beams must
always be used. They are integrated into the Slitlamp and LIO Delivery Units and when using
the endoprobes a separate filter that attaches to the operating microscope must be used.
For other personnel that may be exposed to reflections or backscatter they must wear Laser
Safety glasses or goggles. In any case NEVER look directly at the Treatment Laser beam as
severe eye injury is likely. This means avoid looking into the Aperture of any of the Laser
Delivery Units or the Console.
If the Laser System requirement maintenance or checking work to be performed inside either
the Laser Console or one of the Delivery Units then it is very important that personnel wear
approved Safety Glasses to ensure that they protect their eyes from unintended Laser beams.
It is important to remember that outside the Console you can only be exposed to the 532nm
wavelength but when the cover is removed from the Console there is the possibility of being
exposed to 808nm Laser light from the Laser Diode source as well. The output from the Laser
Diode source is directly connected to the Green Laser Cavity with a short Fiber link and when
the Laser is operating Invisible Laser Radiation is being transmitted through this Fiber Link.
Any damage to the Fiber could result in exposure to 808nm Laser Radiation. Therefore the
Safety Glasses used should provide protection for both the 532nm and 808nm wavelengths.
This is the Collateral Radiation for the LightLas 532.
It should be made clear that it is not possible to be exposed to any Collateral Radiation so long
as the Covers are not removed from the Laser Console.
Inside the Green Laser Cavity the 808nm Laser Diode output is converted into 1064nm
wavelength Laser Light and if the Cavity was opened then additional protection to this
wavelength is essential. The Manufacturer does not permit opening of the Laser Cavity as it is a
factory sealed unit.
Look in Section 3 under the Accessories part for details relating to the Safety Glasses available
from the manufacturer.
2.4 Electrical Hazards
The LightLas 532 Photocoagulator Laser has been designed to comply with International
Standards for Medical Electrical equipment. The Laser System is designed to operate with a 3
terminal mains AC voltage supply with the third pin being the Earth or Ground connection.
WARNING: It is not safe to operate the LightLas 532 Photocoagulator Laser without an
Earth or Ground connection. Risk of electrical shock is possible.

16
The earth connection provides protection against electrical shock as it provides a path away
from the operator or Service person for any fault condition.
When servicing the LightLas 532 Photocoagulator Laser take particular care when servicing or
testing the mains AC wiring and also any internal power supply voltages.
The current supplied to the Laser Diode source can exceed 30 Amps.
Also of particular importance is that ESD precautions always be observed when servicing the
LightLas 532 Console because the Laser Diode source is particularly sensitive to ESD and very
small levels (around 50 volts) can cause severe and permanent damage to this high cost device.
It is recommended that where possible always have the mains power disconnected when
servicing the LightLas 532 Photocoagulator Laser. If power must be connected to effect service
or testing then observe the strictest care to avoid electrical shock.

17
2.5 Safety Controls and Features
For the LightLas 532 to comply to the various requirements of the standards referred to
previously there are a number of Controls and Features that are provided.
A description of these Safety items is provided following the Figure 2.1.
POWER
LASER STOP
EMERGENCY
Delivery
LIO
Key
!
LIO
STOP
exposition dangereuse au rayonnement
Risques d'explosion si utiliseen presence
Ne pas ouvrir L'appareil risque de chocs electriques
Laser direct ou diffuse reparations par servicequalified service personnel.
flammable anesthetics.
DANGER!
EXPLOSIONSGEFAHR
Kundendienst.
Laserstrahlung zuganglich.
ACHTUNG!
Dieses Gerat ist nicht fur den Betrieb in
explosiongefahrdeten bereichen bestimmt
Gefahr eines elektrischen Schlages
GEHAUSETEILE NICHT ENTFERNEN
Wartungsarbeiten nur durch qualifizierten
accessible laser radiation. Refer servicing to
Risk of explosion if used in the presence of
Do not remove covers. Shock hazard and
Replace only with
fuse as marked above
WARNING
AC MAINS INPUT
50/60Hz, 400VA
100-230V ~ (Fuse:T3.15AH250V)
Risk of fire
INPUT:
DANGER!
Complies to the requirements of
21CFR, Chapter 1, Subchapter J
connect only to with a "Hospital
For grounding reliability
Grade receptacle".
d'anesthesiques inflammables
technique qualifie. DIRECT OR SCATTERED RADIATION
AVOID EYE OR SKIN EXPOSURE TO
Visible and Invisible laser radiation when open
FOOTSWITCH INTERLOCK
DOOR
Danger/Caution
Figure 2.1
Safety Controls

18
1. Emergency Stop Switch
This switch is provided to enable a fast response shutdown of the Laser System in the
event of some serious problem occurring. It is a RED push switch that locks down when
pushed and in this position all power to the internal parts is removed. The switch actuator
( the red part ) must be rotated to reset to the ON position.
2. Key Switch
The Key switch is the main power ON/OFF switch. The power can only be turned on by
inserting the key and rotating clockwise to the ON position. In the ON position the key
cannot be removed. The key should be stored in a safe, controlled place.
3. Shutter Attenuator
Internal to the Laser System and in the Laser beam path there is a mechanical shutter unit
that completely blocks the beam path at all times except when the Laser System is in the
TREAT mode. There are electronic sensors that check the position of the shutter at all
times for the microprocessor.
4. Mode Set Switch
This press switch toggles the Laser System between the STANDBY and TREAT modes.
In the Standby mode the Footswitch cannot fire the Laser, Aiming beam disables, and the
Shutter is always closed. The Treat mode is only used when the operator wants to deliver a
pulse of laser power and aiming beam to the patient and in this mode the footswitch is
enabled and the shutter can be opened.
5. Standby Indicator
When this indicator is illuminated the Laser System is in the Standby mode and the Laser
power CANNOT be delivered to the patient. This indicator is Yellow in color.
6. Treat Indicator
When this indicator is illuminated the Laser System is in the Treat mode and the Laser
power CAN be delivered to the patient. The System will only stay in the Treat Mode for a
maximum of 10 minutes if the unit is not used or some controls operated. The System will
go back into the STANDBY mode after this time. This also is used to provide a Ready
indicator prior to emissions of the Treatment Laser. This indicator is Green in color.
7. Remote Door Interlock
On the back of the Laser Box there is a connector from which 2 wires can be connected to
a switch on the door(s) of the treatment room and wired so that the switch(s) go open
circuit if the door is opened. When the Laser is turned on and the door is opened a warning
tone is made and the Laser cannot be fired. The system will go to the Standby mode if it
was in the Treat mode before the door was opened. This is a user installed feature and the
manufacturer supplies a connector with the two pins shorted together so that the Laser will
function if this feature is not used by the operator.

19
8. Footswitch checks
The microprocessor monitors the signal from the footswitch in order to be certain that the
switch contact is good. It is not possible to go to the TREAT mode or change any set up
condition if the footswitch is ON.
9. Self Checks
When the Laser system of the LightLas 532 is first turned on it operates the Laser and
during this time the microprocessor performs various checks to ensure the Laser is
functioning correctly. If the test passes then the unit goes to the Standby mode.
10. Others
In addition to these particular safety controls there are a number of features that have been
designed into the LightLas 532.
All the controls are located so as to prevent the operator inadvertently firing the laser.
The Laser System has protective housings on the Laser and optical system to prevent
exposure to laser emissions. Special tools are required to remove the housings and
only authorized agents are permitted to remove the housings.
There are optical safety filters built into the Laser System to protect the operators eyes
from being exposed to the Laser beam when using the equipment.
The Laser system has been designed to comply to the Electrical Safety standards for
Earth connections and Earth leakages.
If the Laser System is not used or no controls are operated for 10 minutes the System
will go back to the STANDBY Mode if it was set into the TREAT Mode.
The Console gives an audible warning whenever the Laser is firing.
With all these controls and features the LightLas 532 is a very safe instrument when
used correctly and as indicated in this manual and the Operator manual.

20
2.6 Product Labeling
All the labels on the LightLas 532 comply with the requirements of the various regulatory
standards referred to previously.
A full facsimile of all the safety and control labels is shown in the figures 2.2 and 2.3.
INPUT:
WARNING
POWER
POWER
Visible and Invisible laser radiation when open
AVOID EYE OR SKIN EXPOSURE TO
DIRECT OR SCATTERED RADIATION
DOOR
INTERLOCK
technique qualifie.
Laser direct ou diffuse reparations par service
Ne pas ouvrir L'appareil risque de chocs electriques
Risques d'explosion si utilise enpresence
d'anesthesiques inflammables
exposition dangereuse au rayonnement
Grade receptacle".
For grounding reliability
connect only to with a "Hospital
21CFR, Chapter 1, Subchapter J
Complies to the requirements of
Do not remove covers. Shock hazard and
Risk of explosion if used in the presence of
accessible laser radiation. Refer servicing to
Wartungsarbeiten nur durch qualifizierten
GEHAUSETEILE NICHT ENTFERNEN
Gefahr eines elektrischen Schlages
explosiongefahrdeten bereichen bestimmt
Dieses Gerat ist nicht fur den Betrieb in
ACHTUNG!
Laserstrahlung zuganglich.
Kundendienst.
EXPLOSIONSGEFAHR
DANGER!
flammable anesthetics.
qualified service personnel.
DANGER!
FOOTSWITCH
LIO
EMERGENCY
STOP
LASER STOP
Danger/Caution
LIO
Key
Delivery
!
LASER STOP
EMERGENCY
100-230V ~ (Fuse:T3.15AH250V)
Risk of fire
fuse as marked above
Replace only with
50/60Hz, 400VA
AC MAINS INPUT
Figure 2.2
Laser Console Safety and Control Labels