TM 10-6665-297-13&P3-3ADJUSTMENTS(continued)3-3.4RECORDEROUTPUTADJUSTMENT. At full-scale meter reading, the recorder circuit can beadjusted to provide an output of from 25 to 100 millivolts D.C., with accurate correspondence ofvoltage output to L. E.L. meter reading throughout the entire meter range. Adjust recorder outputlevel as follows:1.With external recorder (minimum input impedance 10, 000 ohms) connected to recorder terminals ofcontrol module (REC + and -), press and hold down TEST pushbutton.2.Observe recorder response at full-scale control module L. E. L. meter reading.3.Turn screw adjuster of REC potentiometer (R17 for CD800/830; R36 for CD802/832 Systems) onprinted circuit board to set recorder deflection at 100 percent point on recorder graph.4.Release TEST pushbutton. Confirm that indicating meter and recorder return to zero.3-3.5CHECKINGFAILCIRCUITS. Fail circuits are generally tested at time of system installation, atcalibration, and for maintenance and trouble-shooting. Refer to Section4, Troubleshooting Chart 4-1D, for procedures to check fail circuits.23-96175/7/803-14
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