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Troubleshooting and Service
Introduction
4
4-1
Section 4
Troubleshooting and Service
The Model 35040 Therapy Dosimeter contains no
internal operator serviceable parts. Disassembly of
the unit could result in electrical shock.
Always select 0 volts bias or turn off the Model
35040 Therapy Dosimeter prior to connecting or
disconnecting the ion chamber. Failure to do so
may result in an electrical shock.
When powering the Model 35040 Therapy
Dosimeter from an AC line, always use a 3-wire
grounding type line cord such as the one supplied
with the dosimeter. In addition, only connect the
Model 35040 Therapy Dosimeter to an AC power
outlet employing a third wire safety ground.
4.1 Introduction
This section outlines steps that the operator may take to identify and correct problems. It also gives
instructions on how to order replacement parts or arrange for service if necessary.
For the purpose of troubleshooting, some problems can be resolved by the operator in the field, even
though the Model 35040 Therapy Dosimeter contains no internal operator serviceable parts.
4.2 Troubleshooting
The dosimeter provides information that can be used in troubleshooting by the user. Troubleshooting has
been split into a list of symptoms and a set of decisions. The first section covers broad categories of
errors. It is organized as symptom, cause, and action blocks. The second section is organized as
decision trees.
A symptom is something that can be seen, heard, or felt. The most likely cause is stated, followed by
what action should be taken to correct the problem or isolate it. The last part of each block is a detailed
explanation.
NOTE