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Chapter 2 troubleshooting, 1 failure analysis and repair procedures, Failure analysis and repair procedures -1 – Yokogawa µR20000 User Manual

Page 11: Warning, Caution

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2-1

SM 04P02B01-01E

Troubleshooting

2

2.1

Failure Analysis and Repair Procedures

This section describes failure analysis and repair procedures.

Failure Analysis Procedures

1.

Determine the type of problem.

2.

Check for possible user error. Check the connections and the settings of
equipment to determine whether there was a handling mistake.

3.

Execute the self diagnostic test by turning the power ON, and identify any
problem items.

4.

Analyze the cause of the problem according to the troubleshooting flow chart.

WARNING

Do not touch the circuit or parts with live voltage because the power unit
contains a high-voltage electrical circuit. The power unit is furnished with a
dedicated cover to prevent electric shock. Do not remove this cover. Never
touch any part not subject to adjustment.

CAUTION

Make sure to connect input terminals (voltage or current) correctly. The internal
circuit may be damaged when wrongly connected.

Flow Chart

This flow chart consists of general service operations when a fault occurs. This chart is
not always suitable for every kind of fault. However, it is recommended to perform
operations according to the flow chart.

START

END

YES

YES

NO

NO

Phenomenon check

Cause check

Assembly exchange and

adjustment

Performance test execution

Repaired?

Chapter 2 Troubleshooting

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