Lightmed LightLas 532 User manual

Service Manual
Multi-Wavelength Pattern
Scanning System –LightLas
532 / 670

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 2 Rev. No 01
Service Manual
for the
Multi-Wavelength Pattern
Scanning System –LightLas
532 / 670
Directive 93/42/EEC
as amended by 2007/47/EC
Doc. No. : DC2300
Rev. No. : 01

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 3 Rev. No 01
Service Manual for the Multi-Wavelength Pattern Scanning
System - LightLas 532 / 670
Clinicians and Doctors should ensure that they are adequately trained in the
procedures that the Multi-Wavelength Pattern Scanning System - LightLas 532 / 670
Photocoagulator Laser will be used for prior to operating the equipment.
This Service Manual should be studied and understood before proceeding to operate
the equipment on patients.
!
CAUTIONS - Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
CAUTIONS - Any modification to the Ophthalmic Laser will result in the necessity for
it to be reclassified
CAUTIONS - U.S. 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
REPEC
EU Representative: Medical Device Safety Service GmbH
Schiffgraben 41, 30175 Hannover, Germany
Document Title:
Service Manual for the Multi-Wavelength Pattern Scanning
System - LightLas 532 / 670
Document Number:
DC2300
Document Revision History:
DRAFT
October 2012
Draft prepared

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 4 Rev. No 01

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 5 Rev. No 01
Table of Contents
Section 1 INTRODUCTION ..................................................................................................10
Section 2 SAFETY ................................................................................................................10
2.1 Product Classifications........................................................................................10
2.2 Warnings and Precautions...................................................................................11
2.3 Optical Hazards ................................................................................................... 12
2.3.1 Nominal Ocular Hazard Distance (NOHD)................................................ 13
2.3.2 Avoid Exposure to Laser beams...............................................................14
2.4 Electrical Hazards................................................................................................14
2.5 Safety Controls and Features..............................................................................14
Section 3 PRODUCT SPECIFICATIONS ................................................................................ 15
3.1 Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 gth System Specification …….……15
3.2 CSO SL980 and SL990 Slit lamp Specifications...................................................18
Section 4 SYSTEM SETUP ...................................................................................................19
4.1 Introduction .......................................................................................................18
4.2 Unpacking and Receiving Inspection ............................................................20
4.3 Tool andEquipment .......................................................................21
4.4 Preparation ......................................................................................................22
A. System Table Top / Motorized Stand ...................................................23
B. LDU Systems / LCD System / Console / Footswitch / Accessories ...........28
4.5Final Verification / Checkout …....................................................................37
A. Integrated Slit lamp LDU ........................................................................37
B. Laser Indirect Ophthaloscope (Optional) ..............................................38
C. Endoprobes (Optional) ...........................................................................40
4.6 Integrated System Initialization and Validation ......................................…......41
A. LCD / Console Validation .........................................................................41
B. Console Control Panel and Aiming Integrity Validation .........................41
C. Pattern Scan Control Validation .............................................................43
D. Micro Joystick Movement Validation ......................................................43
E. Remote Control Validation (Optional) ...................................................43
Section 5 SYSTEM OVERVIEW............................................................................................ 50
5.1 General Operating Theory .................................................................................. 50
5.2 Theory of Operation ...........................................................................................53
5.3 System Subassemblies / Components.................................................................54
A. Laser Console Internal Modules ..............................................................55
B. LCD / Remote Control Interface Module .................................................65
C. LDU Systems ............................................................................................66
Section 6 REPAIRING PROCEDURES.................................................................................. 70
6.1 Repairing Procedures ........................................................................................ 70

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 6 Rev. No 01
A. Microprocessor PCB Replacement .........................................................71
B. DC / DC Main PCB Replacement .............................................................72
C. DC Power Supply Module Replacement ...............................................73
Section 7 CALIBRATION / ALIGNMENT PROCEDURES ................................................74
7.1 Truscan Laser Power and Detector Calibration Procedures ........................74
A. 532nm Power Calibration Procedures (Port 1 / Port 2) .........................75
B. Software Calibration for All Different Power Range (100 - 2000mW) .78
C. 532nm Power Display Calibration Procedures (Port 1 / 2) ...................80
D. Software Calibration for All Different Power Range (50 - 2000mW) ...82
E. 670nm Power Calibration Procedures (Port 1) .....................................83
F. Software Calibration for All Different Power Range (100 - 700mW) ...86
G. 670nm Power Detector Procedures (Port 1) ........................................88
H. Software Calibration for All Different Power Range (50 - 700mW) for
Port 1 ...................................................................................................90
7.2 Aiming Spot Position Realignment Procedures ..........................................93
A. Fine Tuning ..............................................................................93
B. Coarse Tuning ......................................................................................95
C. Aiming Spot Stability Realignment Procedures (X / Y Axis) .................99
D. Spot Size Realignment Procedures (50 - 1000um) ..............................101
7.3 Slit Lamp Realignment Procedures ...........................................................102
7.4 Aiming Intensity Realignment Procedures .................................................103
A. Aiming VR Intensity Adjustment .........................................................103
B. Aiming Realignment Procedures .........................................................103
Section 8 MAINTENANCE ...........................................................................................106
8.1 Operator / User Maintenance …………………………………………….106
8.2 Laser Beam Alignment Check …………………………………………….107
8.3 System Output Power Checking Procedure ……………………………..108
8.4 Transmission Rechecking Process ..............................................................109
Section 9 TROUBLESHOOTING ...................................................................................109
9.1 Symptom …………………………………………………………………..111
9.2 Warning …………………………………………………………………...113
A. LCD Warning ..........................................................................................113
B. Remote Control Warning .....................................................................119
9.3 Error Codes ……………………………………………………………..120
Section 10 SOFTWAR UPGRADING PROCEDURES …………………………….124
10.1 Introduction ................................................................................................124
10.2 Preparation .................................................................................................124
10.3 Driver Software Downloading Procedures ................................................124
10.4 Software Installation Procedures ................................................................126
A. Window 7.0 or Above ..........................................................................126
B. Window XP ...........................................................................................131

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 7 Rev. No 01
10.5 Configuration Procedures ........................................................133
10.6 Downloading Procedures. .........................................................................135
A. Console (MCU1) ....................................................................................135
B. Console (MCU2) ...................................................................................136
C. Re mote Control Downloading ................................ ...136
Section 11 WARRANTY TERMS .......................................................137

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 8 Rev. No 01
LIST OF DRAWINGS / FIGURES
Figure
Description
Page
4.1
Integrated Slit lamp LDU Packing
21
4.2
Portable Carry Cases for Console and LDU’s
21
4.3
Inter-power Connection (Left hand side)
25
4.4
Slit lamp with Power Plugs Facing Each Other
25
4.5(a)
Rear View Box Connection
26
4.5(b)
Removal Fuse Socket
26
4.5(c)
Removal Fuse
27
4.5(d)
Voltage Setting Verification and Reinsert Back Process
27
4.6
Final Assembled Product and Verification Recheck
28
4.7
Slit lamp Packaging Ass'y
30
4.8
Assembled Upper and Lower Housings Screw
31
4.9
Completed Assembling Upper and Lower Housing Ass'y
31
4.10
Cabling Stuffed Underneath of Table Top's Cabling Gutter
32
4.11(a)
Slit lamp Arm Ready for Delivering Housing
32
4.11(b)
Fitting Delivering Housing to the Slit lamp and Securing it
33
4.12
Mounting Chinrest Ass'y and Fitting Delivery Fiber to Truscan
Aperture
33
4.13(a)
Hang console and plug in all the front panel connections
34
4.13(b)
Console Rear End Connections
34
4.14
Arm rest installed
35
4.15(a)
Clamp down the LCD Panel Holder in the middle of the gutter
35
4.15(b)
Organize the two control panel cablings and ready to fit the LCD
36
4.15(c)
Complete securing four holding screws behind the LCD panel and
two cablings connected
36
4.16(a)
Software System boot up
37
4.16(b)
System Ready to operate
37
4.17(a)
Fiber and Delivery Key fitted to Console Front Panel
39
4.17(b)
Fiber tips cleaning
39
4.17(c)
LCD LIO Intensity Control Knob
40
4.17(d)
LIO Intensity Control Knob
40
4.18
Endoprobe plug installation
41
4.19(a)
Front End Connection
45
4.19(b)
Rear End Connection
45

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 9 Rev. No 01
Figure
Description
Page
4.20(a)
System boot up sequential display 1
46
4.20(b)
System boot up sequential display 2
46
4.20(c)
System boot up sequential display 3
46
4.21
Initial Aiming Intensity Verification
46
5.1
LCD and Console System Block Diagram
53
5.2
Truscan Console Layout Diagram
54
7.1
Y-Axis Pattern Screen Shot
101
7.2
X-Axis Pattern Screen Shot
101
9.1(a)
Sample of Error code display
119
9.1(b)
Sample of Remote Control Error code display
119
Record Sheet
Installation Record Sheet
47-48
Primary Power Calibration Record Sheet
90
Secondary Power Calibration Record Sheet
91
Transmission Checking Record Sheet
109
Appendix
Appendix I Accessories / Parts Listing Detailed
136- 137
Appendix II Console Wiring Diagram
138

Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 - Service Manual Page 10 Rev. No 01
Section 1 Introduction
This manual is intended to provide the operator with an overview of the operation
and safety requirements for the Multi-Wavelength Pattern Scanning System -
LightLas 532 / 670 Ophthalmic Laser. This manual is not intended to provide
instructions on actual treatment procedures and it is expected that users will have
undertaken training prior to using the equipment.
The Manufacturer and Distribution organization assume no liability through the use
of this Laser system.
All care has been taken in the preparation and checking of this manual however there
is no guarantee provided that all information is correct. The information provided in
this manual is subject to change without notice.
Only approved or authorized accessories may be used in the Multi-Wavelength
Pattern Scanning System - LightLas 532 / 670 Ophthalmic Laser. The Manufacturer
and Distribution organization shall not be held liable or responsible for damages or
injury caused as a result of using 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 and trained
service agents and only those procedures outlined in the operator and service
manual are allowed. Any service work carried out by unauthorized persons will void
all warranties.
No circuit diagrams or component part lists are to be supplied for the Multi-
Wavelength Pattern Scanning System - LightLas 532 / 670 Ophthalmic Laser. If you
require technical documentation that is not provided in this manual then please
contact the manufacturer or your local distributor in writing with your reasons for
wanting them and then a copy of the service manual may be provided.
Before using the Multi-Wavelength Pattern Scanning System - LightLas 532 / 670
Photocoagulator, the operator should read this manual carefully and pay particular
attention to the sections of Safety, Operation and Maintenance.