TM 9-4910-663-34
2-13.
REMOVAL AND INSTALLATION OF PC BOARD ASSEMBLY (fig 2-10)
a.
Disconnect electrical input power from the test stand.
b.
Remove the panel retaining screws at the top and sides of the instrument panel (fig 2-4).
c.
Swing the instrument panel down.
d.
Remove the four screws that attach the PC board assembly to the instrument panel.
e.
Unsolder wiring (tag wires for identification) from the terminals of the PC board assembly, and remove the PC
board assembly from the test stand.
f.
Reverse the procedures of steps a through e to install the PC board assembly in the test stand.
2-14.
REMOVAL AND INSTALLATION OF RHEOSTAT ASSEMBLY (R18, fig 2-5).
a.
Disconnect main power from the test stand.
b.
Remove 10 1/4-20 screws that attach the side panel of the test stand, and remove the side panel.
c.
Remove seven 1/4-20 panel retaining screws at the sides and front of the control panel.
d.
Raise the control panel and secure it in the up position, using the lock bolt (fig 2-4).
e.
Disconnect the wiring from the upper and lower terminals of the rheostat assembly.
f.
Remove the knob from the rheostat.
g.
Remove the four 1/4-20 screws that secure the rheostat assembly to the rheostat panel, and remove the rheostat
assembly from the test stand.
h.
Reverse the procedures of steps a through g to install the rheostat assembly in the test stand.
2-15.
REMOVAL AND INSTALLATION OF LINK BOARD ASSEMBLY (fig 2-8)
a.
Disconnect main power from the test stand.
b.
Remove the mounting bolts that attach the link board assembly to the test stand.
c.
Drop the link board assembly and disconnect all wiring.
Change 1 2-70
