TB 9-4931-700-50
(2) Connect ac/dc voltmeter to A1A3TP5 (fig. 2), using cable (B6) and adapter
(B2).
(3) Press ERROR RANGE 0 pushbutton and adjust ERROR MEASUREMENT
control to obtain indication of 0 (zero) on % ERROR scale. Record ac/dc voltmeter
indication.
(4) Press ERROR RANGE X1 pushbutton. Loosen two setscrews that fasten the
drive sprocket to shaft of error potentiometer (fig. 1).
(5) Using a pair of long-nose pliers, rotate shaft of error potentiometer until ac/dc
voltmeter indicates exact value recorded in (3) above.
(6) While holding shaft of the error potentiometer in place, adjust ERROR
MEASUREMENT control to obtain exact 0 (zero) on % ERROR scale and tighten two
setscrews.
(7) Repeat adjustments as necessary to obtain optimum operation.
(8) Set A1A4S1 (fig. 2) to center position.