Teledyne MX300 manual Other Problems with the Instrument

Page 43

Portable Oxygen Monitor

Service Manual

 

 

 

 

 

 

5

- Silence

 

 

 

6

- High Alarm

 

 

 

7

- Alarm Test

 

 

 

8

- Key Lock

 

 

 

 

7(2)

 

7

A failure has occurred during the automatic

 

 

(There is no

calibration of the digital to analog converter (DAC)

 

 

circuit. The second digit example (2) shows the

 

 

indication of

 

 

type of digital to analog failure.

 

 

the type of

 

 

 

 

 

 

DAC failure)

0 - Measurement

 

 

 

1

- High Test

 

 

 

2

- Low Test

 

 

 

3

- Offset Cal

 

 

 

4

- Gain Cal

3.10

Other Problems with the Instrument

Most other problems arise from either mechanical damage from the instrument falling from a bench or table, or electronic component failure. In these units, repair or troubleshooting the PCB or individual component on the board is not feasible. It requires specialized test equipment and probes not generally available to the public. Under most circumstances a replacement of the entire PC Board is recommended. The instrument must be returned to the factory for PCB installation.

Occasionally, depending on the environment of use, keys can become stuck or function erratically due to contamination. Use a mild non-abrasive cleaner solution to periodically clean the keypad and screen. An aerosol jet spray of the type commonly used to clean computer keyboards can be used to dislodge dirt and accumulations from the keypad.

The Error Code Table (Table 3-2) includes a description of certain fault codes which are diagnostic of some common (usually electronic) problem with the instrument. Some of these codes refer to specific components on the PCB that are problematic or have failed. These codes are useful in reporting a problem with your instrument to Teledyne Customer Service. If an error code is indicated on your monitor record the number and report it to the Customer Service Department at the address below.

Teledyne Analytical Instruments

43

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Contents MX300 MX300 About This Manual How To Use This ManualSafety Messages Table of Contents Appendix MX300 Front View List of FiguresList of Tables MX300 Front View IntroductionApplicable Standards Options FeaturesTheory of Operation ApplicationsSensor Signal ProcessingIntroduction Operation SetupInstalling the R17MED Sensor Sensor Installation or ReplacementSensor Cable Connection to Monitor Mounting V-Mount Adapter InstallationInstalling Batteries Battery InstallationCalibration S CalibrationPortable Oxygen Monitor Operation Setting the Alarms AlarmsOutput 0-1 VDC or RS232 0-1 VDC or RS 232 Digital Output Port Use ProcedureHumidity Gas SamplingPressure TemperatureAnesthetic Gases Discrepancy in ReadingsOxygen Reading Error in a Mixture of Anesthetic Gas Instrument CleaningDo’s and Don’ts Operation Portable Oxygen Monitor Operation Blank Teledyne Analytical Instruments Overall Maintenance General Service InformationBattery Maintenance Calibration Sensor MaintenanceAlarms Pressure Troubleshooting Troubleshooting√ Sensor Portable Oxygen Monitor Watchdog Error CodesOther Problems with the Instrument Return Authorization for Service Appendix SpecificationsOptional Accessories Spare Parts ListOrders should be sent to Blank Index Index