Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 62)

Troubleshooting Model 6400EH
Teledyne Analytical Instruments 50
Figure 10-5: Pre-Amplifier Board Layout
1. Set the instrument reporting range type to
SNGL (see Section
6.7.4 of the 6400E Manual)
2. Perform a zero–point calibration using zero air (see Chapter 7 of
the 6400E Manual).
3. Let the instrument stabilize by allowing it to run for one hour.
4. Adjust the UV Lamp. (See Section 10.3.2.1 of this manual)
5. Perform a
LAMP CALIBRATION procedure (see Section 6.9.7 of
the 6400E Manual).
6. Locate the Preamp board (see Figure 3-4 of this manual).
7. Locate the Following Components On the Preamp board (see
Figure 10-5 of this manual):

HVPS coarse adjustment switch (Range 0-9, then A-F)

HVPS fine adjustment switch (Range 0-9, then A-F)
 Gain adjustment potentiometer (Full scale is 10 to 12 turns).
8. Set the HVPS coarse adjustment to its minimum setting (0).