Schiller AT-1 - Introduction

Chapter 3
Fault Diagnosis and Check Procedures
SCHILLER AT-1 3-Channel ECG Unit
SERVICE HANDBOOK Issue 3 September I999
Introduction
The AT- 1 is designed to be sunple to use and sunple to service: the service ptulosophy of the AT-
1 ismodulereplacement andnot boardrepair. The purposeof thischapter is to provide fault-finding
procedures
that will quickly and efficiently identify a fault to a specific module. Fault-finding
procedures
are designed so that test equipment is kept to a minimum.
An initial fault diagnosis chart is provided detailing all the general fault indicadons. Use the fault
finding cham and procedures
on the following pages to indicate a faulty area or module. In most
cases
the fault finding charts should indicate the most likely faulty area. When more than one
module
is stated. the first module given is the one most likely to contain the fault. Other modules
given
should be checked in the order given. When a module has been replaced specific test
parameters
and setting-up of the module may be applicable. The removal and replacement
instructions for
all replaceable modules, along with any setup or check procedures required, are
given in Chapters 4 and 5.
If the initial fault-finding chart does not indicate the area where the fault exists, re-check all the
settings and parameters that have been entered. If these are correct, check the software.
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