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Thermal Conductivity Analyzer Part II: Analysis Unit
Teledyne Analytical Instruments Part II: 4-3
3. Replace fuse by reversing process in step 1.
4.4 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
.
4. Observe the error-code readings on the VFD Display screen, and
check Table 4-1, below, to interpret the codes.
Table 4-1: Self Test Failure Codes
Power
0OK
1 5 V Failure
2 15 V Failure
3 Both Failed
Analog
0OK
1 DAC A (0–1 V Concentration)
2 DAC B (0–1 V Range ID)
3 Both Failed
Preamp
0 OK - > 0 means gains of the amplifier have a
high offset, e.g. 204 means the highest
gain has a high offset it is common on
sealed air reference.