Technical information

Operating in Manual Mode

3-22 Tenth Edition 9871

Rotating the Theta Assembly

CAUTION:

EQUIPMENT DAMAGE. Theta assembly does not move a full 360

degrees. DO NOT FORCE THETA ASSEMBLY IF YOU MEET RESISTANCE

WHILE TURNING IT.

If you need to rotate the theta assembly, grasp it and carefully turn the

assembly, as shown in Figure 3-14.

Note: If the assembly meets resistance and stops before the desired position is

reached, it has contacted a stopping mechanism (Figure 3-15 on

page 3-23).

Rotate the shaft in the opposite direction.

Figure 3-14. Rotating the Theta Assembly

Z MECHANISM

THETA

ASSEMBLY