Brother BAS-311E service manual Y axis 311E and 311EL, Adjustments, e r e r

Chapter 4. Adjustments

■(Y axis) 311E and 311EL

	1.	Remove the belt cover q and the frame side cover w.
	2.	Connect the programmer to the operation panel.
q	3.	Turn on the power of the machine.
	4.	Press the P key on the programmer.

w

e

r

e

r

H - position (X = 0, Y = 0)

5.Attach the needle e.

6.Turn the pulley to approach the needle e to the H-posi- tion standard plate r.

t	y	t
u

0.1 - 0.5mm

u

7.Press the P key and adjust the Y-home position dog t so that the needle e is aligned with the home position (X=0, Y=0) of the H-position standard plate r.

8.Press the P key again to make sure that the needle e is aligned with the home position (X=0, Y=0) of the H-position standard plate r.

9.Secure the Y-home position dog t using the set screw y.

10.Remove the needle e.

11.Press the P key to be out of the program mode, and turn off the power. 12.Replace the H-position standard plate r with the work clamp.

Note: When adjusting the Y home position, be sure to set the clearance between the Y-home position dog t and the surface where the sensor u is activated to 0.1 - 0.5 mm. If the clearance is too great, an error in home position detection may occur because the temperature of the sewing machine rises during sewing operation.

62 BAS-311E.311EL.326E.326EL