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Summary of Contents for Welch Allyn HLS-24-0
- Page 1 Light Source Menu Welch Allyn Solarc Operation Manual Light Source/Illuminator Service Manual Models: 49500,49502,49504,49506, HLS-24-0,HLS-24-2,HLS-24-4,HLS24-6 Copyright 1996 Welch Allyn Inc. 4341 State Street Road P.O Box 220 Skaneateles Falls, NY 13153-0220 P/N 495621 Rev. B...
- Page 2 Introduction Revision (History) Page Rev. Description of Change ECN # Date Initial New Release 5-33806 10/10/96 Update, Remove section revisions, 5-34456 1/14/97 JSJ/MD replace fuse P/N Light Source/Illuminator Service Manual Page 2...
- Page 3 The information in this manual is subject to change without notice and should not be construed as a commitment by Welch Allyn, Inc. Welch Allyn assumes no responsibility for any errors that may appear in this manual. If the product and/or its operation varies significantly from any...
- Page 4 Welch Allyn or an authorized agent. Welch Allyn will either repair or replace any components found to be defective or at variance from manufacture's specifications within this time at no cost to the customer.
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Page 5: Table Of Contents
Introduction Table of Contents SECTION 1: General Information Basic System Description ............. . . 7 Specifications . - Page 6 Introduction APPENDIX A: Schematics/Diagrams Table of Drawings (Appendix A) Drawing Number Description Parts Lst/Recomended Inventory 495000 ACMI Light Box Asm 495064 Right Housing Asm 495072 Internal Chassis Asm 495078 Secondary Wire Harness Asm 495102 Interconnect Diagram A03387 Illuminator Electrical Safety Test Secification Drawings and specs are for reference only.
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Page 7: Section 1: General Information
Model HLS-24-0 is an industrial illuminator which can be used in many industrial applications. The HLS-24-0 is also known at Welch Allyn as a 49501I (The I indicates that the unit is for industrial use only). This instrument is identical to the 49501 medical light source with the deletion of the Infrared filter and the Ferrite bead. -
Page 8: Specifications
The CE mark on this product indicates it has been tested to and conforms with the provisions noted within the 93/42/EEC Medical Device Directive. Declarations of Conformity are held by Welch Allyn's European Representative. European Regulatory Manager Welch Allyn Ltd., Kells Road, Navan, County Meath, Republic of Ireland. -
Page 9: Section 2: Service
Service Intent of Manual The purpose of this manual is to provide Welch Allyn Inc. authorized service representatives with systematic guidelines for preventative maintenance, problem identification, and service of the Solarc Light Source/Illuminator. We have included the theory of operation schematic diagrams, simplified drawings, service tips and procedures to assist a trained service representative with board-level repairs. -
Page 10: Words Of Caution
Section 2 Service Words of Caution: High Voltage Use caution when servicing. When servicing the unit, potentially dangerous high voltage levels are exposed. Disconnect the power cord whenever possible to avoid electric shock. Static Electricity (ESD) Adhere to standard ESD practices at all times when servicing this equipment. -
Page 11: Performance Check
Section 2 Service Performance Checks The following performance checks will help you (1) determine whether or not the system is operating properly, and (2) isolates a problem, if there is one. System Set Up Make sure the system is connected as follows: Be sure that power is being provided by the wall outlet. -
Page 12: Section 3: Problem Solving
Problem Solving Troubleshooting Experience shows that many service calls are due to improper operator technique and poor connections. Before taking apart the light source, make sure that setup errors are not causing the problem. When checking voltages or signals, be sure to verify signal through the harness wires, connectors, and on the circuit board. - Page 13 Section 3 Problem Solving Symptom Possible Cause Procedure Lamp not illuminated, fan Power line damaged or Connect, repair, or does not function (No disconnected. replace as necessary. power is apparent). Power is not turned "ON" Turn power on. Lamp Door Interlock Verify that the lamp cover switch is disengaged.
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Page 14: Section 4: Disassembly And Repair
Disassembly and Repair About This Section: This section describes how to remove and replace major sub assemblies of the 49501 (Medical Version) and 40501I (Industrial Version) Solarc Light Source. Note: Refer to the "Bubble Number" on each drawing and the cross reference on the Parts List to determine the correct part number. -
Page 15: Left Housing Assy
Section 4 Disassembly and Repair Left Housing Assy Disassembly Remove the two screw plugs: ___Drill through the center of the plug with a 1/16 drill in a pin vise and pull straight up. Remove the Bottom Housing: ___ Loosen thumb screw on the back of the unit and slide the assembly towards the back of the unit. -
Page 16: Ballast Board
Section 4 Disassembly and Repair Ballast Board Replacement Lamp: ___ Remove the lamp from the lamp holder, and disconnect the lamp socket. Wire Tie: ___ Cut the tie wrap that holds the black and white wires that lead to the ballast board and lift the metal chassis off to one side. Ballast PCB: ___ Unscrew the four Phillips head screws that hold the ballast board in place. -
Page 17: Fan / Secondary Wire Harness Asy
Section 4 Disassembly and Repair Fan / Secondary Wire Harness Replacement * The fan comes as part of the secondary wire harness assembly; therefore, the entire secondary wire harness assembly must be replaced. Power Supply PCB: ___ Remove the power supply board and the ballast board as described in earlier in section 4 of this document. -
Page 18: Lamp Cover Safety Interlock Switch
Section 4 Disassembly and Repair Lamp Cover Safety Interlock Switch: Safety Switch Assy: ___ Unscrew the two Phillips head screws that hold the switch assembly to the chassis. Keep the outside insulators. Primary Wires: ___ Disconnect the primary wires from the switch, and remove the switch. - Page 19 Section 4 Disassembly and Repair Replacement of the Primary Wiring Harness Left Housing: ___ Remove left housing assembly as described earlier in sect. 4. Wire Ties: ___ Cut the two wire ties that hold the harness to the internal chassis plate. Ground Wire: ___ Unscrew the two nuts on the chassis ground lug using an 11/32 nut driver, and remove the primary ground wire.
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Page 20: Section 5: Maintenance
- Are there any loose parts inside the box? - Is the power switch working properly? - Do all components connect/disconnect easily? - Are the ventilation holes free of obstructions? CLEANING Refer to Operating Manual, Welch Allyn Part Number 495003. Light Source/Illuminator Service Manual Page 20... -
Page 21: Checking Ground Impedance
Section 5 Maintenance Check Ground Continuity Disconnect the power cord from the Solarc Light Source. Verify the impedance between the ground pin of the IEC detachable ground cord and the thumb screw meets the requirements as outlined on drawing A03387 in Appendix. A). Measuring Leakage Current To check the Chassis Leakage Current: Connect the light source to a leakage tester (refer to figure 5-1), and measure leakage current... - Page 22 Section 5 Maintenance LEAKAGE CURRENT TEST SET-UP When the light source is used in conjunction with other accessories, it may be necessary to measure the leakage current level of the entire set-up. A typical system setup is shown in Figure 5-1. Using a standard leakage tester, this set-up will allow the overall system leakage current to be measured.
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Page 23: Fuse Or Lamp Replacement
Section 5 Maintenance FUSE REPLACEMENT Turn the power switch OFF and disconnect the power cord from the light source. Open fuse drawer located as part of the power cord receptacle. Remove fuse by pulling it out firmly. Check fuse condition. Replace if blown. Replacement fuse: 250V, 1.0 Amps. -
Page 24: Introduction
Model HLS-24-0 is an industrial illuminator which can be used in many industrial applications. The HLS-24-0 is also known at Welch Allyn as a 49501I (The I indicates that the unit is for industrial use only). This instrument is identical to the 49501 medical light source with the deletion of the Infrared filter and the Ferrite bead. -
Page 25: Power Supply
Ballast Board The ballast board is a power supply used to operate the 24 watt Welch Allyn miniature arc lamp. The nature of arc lamps require a ballast which limits the current, and therefore the power, in the lamp. - Page 26 Appendix A Light Source/Illuminator Service Manual Page 26...
- Page 27 Parts List / Recommended Inventory Part No. Description Drawing # Bubble # Rec. Inv. 106100-8 PHPS 6-32 X .63 LG 495000 106102-2 FHPS 4-40 X .375 LG 495000 106100-13 PHPS 6-32 X.500 495000 495059 LAMP REPLACEMENT LABEL 495000 495063-1 HOUSING, LEFT 495000 495080 PLUG, SCREW...
- Page 28 Parts List / Recommended Inventory Part No. Description Drawing # Bubble # Rec. Inv . 495066 LAMP HOLDER 495064 106132-3 4-40 X 1" PH TR MS SS 495064 106132-5 4-40 X .750 PH TR MS SS 495064 M31426 .032DIA ENERGIZED ROSIN S 495064 106113-6 #4-40 SOCKET SET SCREW...
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