6-34 | Model 931S / Model 932S UV Analyzers
b. Disconnect the following wiring connectors from the Micro-
Interface board (see Figure 6-11 for connector locations):
• Measuring Cell RTD line from J300.
• RS-422 communication line from J104.
• Micro-Interface AC power line from J200.
• DC power line from J103.
• Optional: If your analyzer has a Cell Heater, disconnect the
Heater Cartridge wire (marked ‘N’) at J200 (Terminal 2) and
the Overtemp Switch wire (marked ‘L’) at J200 (Terminal 1).
Figure 6-11.
Micro-Interface board
(100-2231).
J300
J104
J200
J103
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