Teledyne 2120XL, Operating Instructions Manual, Page: 79 / 85

Trace Nitrogen in Argon Analyzer Maintenance
Teledyne Analytical Instruments 67
American Fuses European Fuses
Figure 5-2: Installing Fuses
5.4 System Self Diagnostic Test
1. Press the System button to enter the system mode.
2. Use the ◄► arrow keys to move to More, and press Enter.
3. Use the ◄► arrow keys to move to Self-Test, and press
Enter.
The following failure codes apply:
Power: Tests the sample 5V and 15V power supplies
0 OK
1 5 V Failure
2 15 V Failure
3 Both Failed
Analog: Set non-zero sample on analog output channel 1 (% of range)
and channel 2 (Range ID) and sample response.
0 OK
1 Analog channel 1 (% of Range) is incorrect
2 Analog channel 1 (Range ID) is incorrect
3 Both channels are incorrect
Preamp: A) Tests the bypass sensor input.
B) Sets a zero level on preamp then tests response.
C) Sets a non-zero livel on preamp then tests response.
0 OK
1 Preamp is incorrect at zero level
2 Preamp is incorrect at non-zero level
3 Both zero and non-zero are incorrect