TM10-3930-660-34 6-9. ELECTRIC JOYSTICK ASSEMBLY - REPAIR/TEST/ADJUST (Cont’d) 3.    MEASURE CURRENT FLOW TO UPPER CIRCUITBOARD (21). IF NECESSARY, ADJUST"THRESHOLD" AND "MAX OUT" CONTROLS. a.   Loosen screw (25) at terminal A of upper circuit board (21) and disconnect electrical lead %53. b.   Connect positive (+) lead of suitable ammeter to terminal A of upper circuit board (21). c.   Connect negative (-) lead of ammeter to disconnected electrical lead %53. d.   Turn starter switch to the RUN position but do not start the engine, TM10-3930-660-10. e.   Slowly move joystick handle (7) to the left until indicator light (26) just comes on. Ammeter reading should be between 300 and 340 ma. NOTE During step f., Turn "threshold" control (27) counterclockwise to lower ammeter reading, and clockwise to raise ammeter reading. f. If reading in step e. was not within limits of 300 to 340 ma., adjust "threshold" control (27) and repeat step e until ammeter reads approximately 320 ma. g.   Move joystick handle (7) fully to the left and observe ammeter reading. Reading should be between 600 and 640 ma. NOTE During step h., turn "max out" control (28) counterclockwise to lower ammeter reading, and clockwise to raise ammeter reading. 6-37