Teledyne 200AU-NOy ユーザーズマニュアル

Model 200AU-NOy Option Manual Addendum   

 
 

NOTE 

 

THE OPERATIONS OUTLINED IN THIS CHAPTER ARE TO BE 

PERFORMED BY QUALIFIED MAINTENANCE PERSONNEL 

ONLY! 

 
 
This section of the manual contains information on diagnosing and repairing converter 
performance problems.  
 
This Section provides troubleshooting procedures that address problems to the board level.  For 
component level troubleshooting, consult the schematics for the appropriate board in the 
Appendix.   

1. 

Think of the M501Y as two sections: 

A. 

Section 1 - Pneumatics - Over 50% of all instrument problems are traced to leaks 
in the M200AU, pump assembly, pole mounted converter assembly, sample filter, 
or zero/span gas delivery system (calibrator).  Suspect a leak first. 

B. 

Section 2 - Electronics – converter temp control board or DC power supply for 
the converter temperature readout. 

2. 

Incorrect span gas concentration - this could come either from the calibrator or entering 
the expected span gas concentration in the M501Y incorrectly, see Table 7.3 in the 
M200AU manual. 

3. 

If the instrument does not respond to span gas, check Section 9.2.3 in the M200AU 
manual. 

 
The above should get you started in diagnosing and repairing the most common faults.  If these 
reasons have been eliminated, the next thing to do is a Factory Calibration covered in M200AU 
manual.  If difficulties persist, contact our service department.  The 800 telephone number is on 
the cover page of this manual. 

The pneumatic system is diagramed in Figure 5.3. 

02808 Rev. E 

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