TM 1-1520-238-T-7 10–45 10–7. SYSTEM DESCRIPTION (cont) 10–7 PILOT N_G RPM% INDICATOR PILOT ENG OIL INDICATOR SDC TGT INDICATOR PILOT FUEL QUANTITY INDICATOR DIM / TEST PANEL CPG INTR LT PANEL SELECTABLE DIGITAL DISPLAY M70-211 OPERATING / LAMP SUPPLY VOLTAGES OIL PRESSURE DATA GAS GENERATOR RPM DATA PANEL EDGE - LIGHTING TGT DATA DISPLAY LAMP DIM / BRIGHT VOLTAGES FUEL QUANTITY DATA Figure 10–20. CPG Selectable Digital Display Functional Block Diagram FORWARD FUEL CELL AFT FUEL CELL FUEL VENT SHUTOFF VALVE AIR PAS AIR PRESS OUT AIR IN COOLING OUTLET INERT INLET NIU NITROGEN CLOSE OPEN NITROGEN CHECK VALVE PILOT VALVE VALVE UNIT CLOSE OPEN VALVE UNIT PILOT VALVE M70-212 Figure 10–21. Nitrogen Inerting System Interface Diagram