KE-750_MS.pdf - 第22页

1-1 LAHD head (1) Disconnect the wire bundle for Z & axes and Z-axis deceleration sensor from the head PCB and remove the LAHD wire bundle from the connector. Disconnect air tubing from couplings. (2) While holding h…

LAIC Head

θ-axis encode

Positioning pin

Head plate

Head up SP

Spring stud

Diffuse

LA senso

θ-axis moto

(SL6051042TN)

SEMS cap screws

Z-axis moto

Fig. 2-1-3

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1-1 LAHD head

(1) Disconnect the wire bundle for Z & axes and Z-axis deceleration sensor from the head PCB and

remove the LAHD wire bundle from the connector. Disconnect air tubing from couplings.

(2) While holding head with hand so that it does not drop, remove the 4 SEMS cap screws (1).

Remove head from head plate by sliding it off positioning pins.

(Dia. 2 - 1 -1)

Note: There should be two shims (above & below) between the head and head plate. These shims are

used for centering the head plate and nozzle in the Y direction. When remounting head, reuse

shims. When mounting a different head, use the shims provided with it.

Stick shims to head plate with grease before mounting head.

Shim types Thickness

Head center shim A (3019721000) t0.1

Head center shim A (3020721000) t0.05

Head center shim A (3021721000) t0.03

(3) Reassemble by reversing the procedures.

Grease

Fig. 2-1-4

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After replacing head, center nozzles of left, right & center heads. Part of the MS parameters will

have to be reentered. (Refer to section 2 - 13.)

– Centering nozzles (X direction)

When assembling, the right head is used as basis for vertical alignment with the base surface.

Left and center heads are centered with reference to the right head. Thus, when left or center

heads are replaced, the right head serves as reference for centering. When the right head is

replaced, use one of the other two as reference. When replacing all three heads, leave right

head in position while replacing the other two and then replace right head.

For method of adjustment, refer to the QA Table under Head, Head centering (X direction).

– Centering nozzle (Y direction)

In the Y direction, the distance is determined by shims between head & head plate.

For method of adjustment, refer to the QA Table under Head, Head centering (Y direction).

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