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TROUBLESHOOTING & REPAIR M102E/M501 TRS
(Addendum to M101E Manual - P/N 04740 Rev A)
6. Locate the Preamp board (see Figure 3-1).
7. Locate the Following Components On the Preamp board (see Figure 10-4):
• 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).
Figure 10-4: Pre-Amplifier Board Layout
8. Set the HVPS coarse adjustment to its minimum setting (0).
9. Set the HVPS fine adjustment switch to its maximum setting (F).
10. Turn the gain adjustment potentiometer clockwise to its maximum setting.
11. Set the front panel display to show STABIL (see Section 6.2.1 of the M101E Manual - P/N
04740 Rev A)
12. Feed 400 ppb span gas into the analyzer.
NOTE
62 05514 Rev A1