Overview; Purpose And Scope; Technical Support Services - Welch Allyn 53 Service Manual

2 - Overview

Purpose and Scope

This service manual is a reference for periodic preventive maintenance and corrective service
procedures for the Vital Signs Monitor 300 Series.
Corrective service is supported to the level of field-replaceable units. These include some
circuit-board assemblies and some subassemblies, case parts, and other parts. (See
Replacement Parts (page 77)
Repair and replacement of the main board is not supported. All service work
on the main board must be performed by certified and qualified service
personnel at an authorized Welch Allyn service center.
Caution No component-level repair of circuit boards and subassemblies is
supported. Use only the repair procedures described in this manual.
Warning When performing a service procedure, follow the instructions
exactly as presented in this manual. Failure to do so could damage the
monitor, invalidate the product warranty, and lead to serious personal injury.
This guide provides troubleshooting information, assembly procedures, and instructions for
functional testing and performance verification. It is intended for use only by technically
qualified service personnel.
This guide applies only to the Vital Signs Model 300 Series. For servicing the previous (52000-
series) version of the Vital Signs Monitor, refer to Welch Allyn service manual 95P445E,
which is available on the TechView CD (900298-1).

Technical Support Services

Welch Allyn offers the following technical support services:
Telephone support
Loaner equipment
Service agreements
Service training
Replacement service parts
Factory Service
For information on any of these services, contact Welch Allyn at the customer-service
numbers listed on page 2
Vital Signs Monitor Series 300
for a complete list of user-replaceable service parts.)
.
11 Service Manual