Welch Allyn Exam Light 3 Service manual

Service Manual

Exam Light III Examination Light

Welch Allyn Medical Division

4341 State Street Road

P.O. Box 220

Skaneateles Falls, NY 13153-0220

488061 Rev. B Copyright 2002

Part# Revision Description ECN# Date Approved

488061 A New service manual 5-45435 01/20/03 DK

488061 B Page 24, Bubble 81, 488119

D* 08/12/09 D*

changed to new 714160

D*: See SAP DIR for change number, approver name, and date of approval.

Drawings and/or illustrations and/or part numbers contained in this document are for refer­ence purposes only. For current revisions call the Welch Allyn Customer Service phone
number listed in Section 1 page 3.

Service Manual 488061 Rev. B Welch Allyn Exam Light III i

Table Of Contents

Section 1: General Information

About the Exam Light....................................................................................................... 1

Features ............................................................................................................................ 1

Agency Approvals ............................................................................................................ 1

Cautions and Warnings..................................................................................................... 2

Help Information .............................................................................................................. 3

Section 2: Incoming Inspection

Incoming Inspection......................................................................................................... 1

Required Tools ..................................................................................................................1

Section 3: Troubleshooting

Initial Screening................................................................................................................ 1

Light Pipe.......................................................................................................................... 1

Focusing Sleeve ................................................................................................................ 1

Electrical Troubleshooting ............................................................................................... 1

Section 4: Disassembly and Repair

Cover Removal.................................................................................................................. 1

EMI Shield Removal......................................................................................................... 1

Lamp Clip Removal .......................................................................................................... 1

Lamp Removal .................................................................................................................. 2

Lamp Holder Removal...................................................................................................... 2

Lamp Baffle Removal........................................................................................................ 2

Light Pipe Connector Assembly Removal ....................................................................... 3

Transformer Removal ....................................................................................................... 3

Illuminated On/Off Switch Removal............................................................................... 4

Fan Removal .....................................................................................................................4

Rectifier Board Removal................................................................................................... 5

Light Pipe Connector Assembly Dissassembly................................................................ 6

Focusing Sleeve Assembly............................................................................................... 8

Appendix A: Repair Part Numbers
Appendix B: Expoded View Drawings/Photos
Appendix C: Electrical Schematic

ii Welch Allyn Exam Light III Service Manual 488061 Rev. B

Service Manual 488061 Rev. B Welch Allyn Exam Light III iii

iv Welch Allyn Exam Light III Service Manual 488061 Rev. B

General Information Section 1

has been tested to and conforms with the

within the 89/336/ECC

Electromagnetic Compatibility Directive.

provisions noted

About the Exam Light III

Welch Allyn’s Exam Light III
to fit on a wall, stand, or on an examination table. The Exam Light III delivers bright, white,
fiber optic illumination for better visibility and more accurate diagnosis.

TM

takes flexible illumination to a new level. It mounts easily

Features

• Durable fiber optic pipe provides cool illumination and is bendable to almost any posi­tion.

• Easy to position, small, non-obstrusive head does not block view for task areas.

• Light weight focusing sleeve optics are sealed for less dust.

• Provides homogenous spot and variable spot size.

• Easy to maintain dichronic halogen lamp provides brighter, whiter light (3,200°F).

• Multiple mounting options for greater flexibility.

• Special UV filters provide safe trans illumination of neonates to detect pneumothorax
conditions and intacranial hemorrhaging, perform infant venipuncture, and locate blood
vessels (Model 48760 only).

Agency Approvals

The CE mark on this product indicates that it

Australia EMC Framework Compliance

N344

Service Manual 488061 Rev. B Welch Allyn Exam Light III 1

Section 1 General Information

Cautions and Warnings

Intense Light: Lamp is extremely bright. Do not stare at the lamp when in
use. May be harmful to eyes.

Caution: Remove power cord from electrical outlet and allow lamp to cool
10 minutes before replacing with a Welch Allyn lamp.

Danger: Electrical shock hazard. Refer servicing to qualified service per­sonnel.

Caution: Risk of explosion if used in the presence of flammable anesthet­ics.

Hot Surface: Lamp is hot. May be harmful to skin if touched.

NOTE: This product complies with the current required standards for electromagnetic inter­ference and should not interfere with other equipment or be affected by other compliant
devices. As a precaution, avoid using this device in close proximity to other equipment.

2 Welch Allyn Exam Light III Service Manual 488061 Rev. B

General Information Section 1

Welch Allyn Inc.
State Street Plant /Corporate Headquarters
4341 State Street Road
Skaneateles Falls, NY 13153-0220, USA

tel: [phone]
315-685-4100
fax: [phone]
www.welchallyn.com/medical/support/tech

MD I nternational
11300 N.W. 41st Street
Miami, FL 33178 USA

tel: [phone]

Welch Allyn G MBH
Zollerstrasse 2-4
72417 Jungingen, Germany

tel: [phone]

Welch Allyn France SARL
814 rue Charles de Gaulle
77100 Mareuil les Meaux
France

tel: ( 011) 33 1.6009.3366
Fax: [phone]

Welch Allyn UK Ltd
St. Georges House
Vernon Gate, Derby
England DE1 1UQ

tel: [phone]-206208
fax: [phone]-206209

Welch Allyn Australia Pty
The Metro Centre Unit 5
38-46 South Street
Rydalmere NSW 2116, Australia
Postal address:
PO Box 132
Rydalmere NSW 1701, Australia

tel: [phone]

Welch Allyn Singapore Ltd

300 Beach Road, #25-08

The Concourse

Singapore 199589, Singapore

tel: (011)

65-291-0882

fax: (011)

65-291-5780

China Service Center
Room 708 Central Plaza
No. 277 Huang Pi Bei Rd.
Huang Pi District
Shanghai 200003
China

tel: [phone]

Welch Allyn Japan K.K.
Bon Marusan 8F, 3-5-1 Kanda

J

-Cho, Chiyoda-Ku

Tokyo 101-0051

J

tel: [phone]

Help Information

To assure correct operation and performance all service and repairs must be performed by
fully trained and properly equipped personnel, using genuine replacement parts and correct
procedures. Failure to do so will also invalidate the product warranty.

fax: [phone]

mob: [phone]

fax: [phone]

fax: [phone]

inbo

apan

fax: [phone]

Service Manual 488061 Rev. B Welch Allyn Exam Light III 3

fax: [phone]

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Service Section 2

Incoming Inspection

NOTE: Use the following guidelines when unpacking the Exam Light III from its shipping
carton.

1. Before opening the Exam Light shipping carton, check for damage.

2. If damage is apparent, stop unpacking the carton and contact the shipping company for

further instructions. If the carton is intact, unpack the Exam Light.

3. With the Exam Light out of its carton, check to see that all the items listed on the

packing slip are in the shipping carton.

4. If an item is missing, first check the carton, then check with your receiving

department. If necessary contact Welch Allyn at the Address and phone number
shown in Section 1.

5. Clean and disinfect by following the instructions printed in the Operator Manual.

NOTE: Perform all functional tests before and after servicing.

6. Operate the Exam Light to verify the customer complaint before making any changes to

the unit. Call the customer if the complaint is unclear.

7. If the unit has caused or is suspected of having caused an injury of any type:

DO NOT DISASSEMBLE OR REPAIR THE UNIT IN ANY WAY.

Contact Welch Allyn Customer Service immediately.

Required Tools

Phillips Screw Driver

Flat Head Screw Driver

Standard Needle Nose Pliers
11/32 Nut Driver

5/64 Nut Driver
3/8 Nut Driver
5/64 Hex wrench

Digital MultiMeter

Service Manual 488061 Rev. B Welch Allyn Exam Light III 1

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