TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 Legend for Figure 4-6. 1. Capacitor 7. Jumper 13. Terminal Board 2. Screw 8. Screw 14. Terminal Board 3. Clip 9. Washer 15. Decal 4. Screw 10. Screw 16. Warning 5. Printed Circuit Board 11. Plate 17. Chassis 6. Jack 12. Spacer 18. Resistor (3) Turn    on    AC    signal    generator.    Set generator  to  1,800  Hz  at  2  to  6  volts rms. (4) Voltage   measured   on   DC   voltmeter should approximate OV DC. (5) Slowly turn the speed pot counterclockwise    until    the    actuator voltage     slowly     starts     to     increase toward 8V DC.  This means the speed setting   has   just   crossed   below   the speed (frequency) signal. (6) Decrease    the    frequency    until    the actuator   voltage   starts   to   decrease. This  simulates  a  decrease  in  speed and normal control response. (7) Open the RAMP SPST switch connected   to   terminals   14   and   15. Increase the signal generator frequency   until   the   actuator   voltage decreases.    The  actuator  voltage  will increase to 8V DC, and drop when the frequency reaches idle speed. (8) Close the RAMP switch.  The actuator voltage  will  fluctuate,  and  then  settle at minimum voltage. (9) Turn   off   the   signal   generator.      The actuator   voltage   will   go   to   8V   DC, verifying the fail safe circuit is working. (10) Turn    on    the    signal    generator    and move  signal  general  frequency  from below   to   above   rated   frequency   to simulate    a    speed    increase.        The actuator voltage should increase towards   8V   DC.      Move   frequency below  rated  speed.  Actuator  voltage will decrease. (11) Close    the    MINIMUM    FUEL    switch between   22   and   23.      DC   voltage should go to 8 volts. 4-16.      REPAIR.      Repair   the   governor   controller   as follows: a. Disassembly of Chassis (1) Remove  terminal  boards  (13  and  14, figure   4-6),   by   removing   screws   (8 and   10),   washers   (9)   warning   plate (11),   washer   (9),   spacer   (12),   and washer (9). (2) The printed circuit board assembly (5) is accessible by removing four screws (4)   and   unsoldering   connections   to terminal boards. b. Repair of Printed Circuit Board Components. NOTE For  repairs  use  a  pencil-type  low wattage soldering iron. (1) When     replacing     3-watt     or     5-watt resistors,   mount   them   at   least   1/16 inch   (1.6   mm)   above   printed   circuit board. (2) When replacing transistors Q2, Q4, or Q5, mount washer between the printed circuit board and the transistor. 4-13