Teledyne t320u Manuale Utente

Troubleshooting and Service 

Teledyne API – Model T300/T300M CO Analyzer 

Sample temperature is < 10

o

C or > 

100

o

C. 

Ambient temperature outside of specified range  
Failed bench heater  
Failed bench temperature sensor 
Relay controlling the bench heater 
Failed relay board 
I

2

C bus 

Occurs when CO Ref is <1250 

mVDC or >4950 mVDC. 

 

Either of these conditions will result 

in an invalid M/R ratio. 

GFC Wheel stopped 
Failed sync/demod board 
If status LEDs on the sync/demod board ARE flashing the cause is 
most likely a failed: 
IR source 
Relay board 
I

2

C bus 

IR photo-detector 

The computer has rebooted. 

 

This message occurs at power on.  If you have not cycled the power 
on your instrument: 
Failed +5 VDC power,  
Fatal error caused software to restart   
Loose connector/wiring  

The filter wheel temperature is 

controlled at 68 

 2

 °

C 

Blocked cooling vents below GFC Assembly.  Make sure that 
adequate clear space beneath the analyzer. 
Analyzer’s top cover removed 
Wheel heater  
Wheel temperature sensor 
Relay controlling the wheel heater 
Entire relay board 
I

2

C bus 

 

 

12.1.2. FAULT DIAGNOSIS WITH TEST FUNCTIONS 

Besides being useful as predictive diagnostic tools, the test functions viewable from the 
front panel can be used to isolate and identify many operational problems when 
combined with a thorough understanding of the analyzer’s Theory of Operation (see 
Section 13).   

The acceptable ranges for these test functions are listed in the “Nominal Range” column 
of the analyzer Final Test and Validation Data Sheet (T300, P/N 04307 and T300M, 
P/N 04311) shipped with the instrument.  Values outside these acceptable ranges 
indicate a failure of one or more of the analyzer’s subsystems.  Functions whose values 
are still within the acceptable range but have significantly changed from the 
measurement recorded on the factory data sheet may also indicate a failure.   

06864B DCN6314