Setup guide

– 4.9 –

4-2-5. Adjustment of the head unit

[The case that needs adjustment]

• Perform this adjustment after replacement of each head and inclination adjustment, if the

X dot position correction value exceeds ±8 dot (rough standard). The purpose of this

adjustment is to improve the 3/4 pass plotting quality.

• Make adjustment with the head lowered to the bottom position.

• Be sure to perform adjustment with the Head cover BKT attached.

[Adjusting procedure]

1) Replace each head lock screws with M4 screws.

2) Loosen four head unit base mounting screws. Do not loosen the supporting point screws.

3) Insert a 1mm spacer between the unit base and the Head BKT and then, while lightly

pressing it, fasten the mounting screws.

4) Select [#ADJUSTMENT - #HEAD ADJUST - #UNIT] and then print the adjustment pattern.

5) Check the dot position of light magenta for black dots and then determine the rotational

direction of the unit.

(If LM positions at the front, make the spacer thinner; if LM positions at the back, make it thicker.)

6) Repeat steps 3) to 5) above so that the X dot position correction value is set to ±8 dot

(0.28mm from Cyan to Light Magenta in reference to Black) or less.

< If there is no spacer >

Use a unit adjuster instead of clamping the spacer. Since the unit adjuster is not used at the

time of shipment, when using it, lightly apply the unit base adjuster before step 2).

(If LM positions at the front, turn the adjustment screw counterclockwise; if LM positions

at the back, turn it clockwise.)

Adjust spacer

Mounting screw

Unit adjuster

Adjusting screw

Mounting screw

Supporting point screw

Head cover BKT

Head unit base

Head BKT