Teledyne MX300-I manual Other Problems with the Instrument

Page 41

Portable Oxygen Monitor

Service Manual

 

 

 

50

5

The ADC circuit failed during POST.

6 (5)

6

A stuck key has been detected. The second digit

 

(There is no

example (5) on the display shows which key is

 

stuck:

 

indication of

 

 

 

 

which key is

0 - Low Alarm

 

stuck)

1

- Batt

 

 

 

 

2

- Cal

 

 

3

- Up

 

 

4

- Down

 

 

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

 

0 - Measurement

 

DAC failure)

 

 

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

Teledyne Analytical Instruments

41

Image 41
Contents MX300-I MX300-I About This Manual How To Use This ManualSafety Messages Table of Contents Appendix MX300-I Front View List of FiguresList of Tables MX300-I Front View IntroductionIntroduction MX300-I Applicable StandardsOptions FeaturesTheory of Operation ApplicationsSensor Signal ProcessingIntroduction MX300-I Operation SetupInstalling the R17MED Sensor Sensor Installation or ReplacementSensor Cable Connection to Monitor Mounting V-Mount Adapter InstallationInstalling Batteries Battery InstallationCalibration Sequence 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 Do’s and Don’ts CleaningPortable Oxygen Monitor Operation Operation MX300-I Battery Maintenance General Service InformationOverall Maintenance Calibration Sensor MaintenanceAlarms Pressure Troubleshooting Troubleshooting√ Sensor Ventilate the patient, water Watchdog Error CodesOther Problems with the Instrument Return Authorization for Service Appendix SpecificationsOptional Accessories Spare Parts ListOrders should be sent to Blank Crossover IndexIndex MX300-I