Picker Activation Adjustment - Brother PR600 Service Manual

Adjustment
1. Remove the bobbin case.
2. Enter test mode and press [MAIN BOARD TEST MODE] and then [PICKER MOTOR TEST].
3. Press [←] or [→] to set "2" for [OVER PULSE].
4. Press [MOVE ORIGIN MOTOR] to turn the picker off, and then attach the bobbin case with a bobbin inserted to
the rotary hook.
5. Press [MOVE ORIGIN MOTOR] to turn the picker on, and then check the clearance between the bobbin and the
picker tip.
6. When clearance cannot be adjusted yet, move the picker holder attachment screw
clearance. (Refer to the conditions below:)
1 Set the value one rank higher (wider clearance) for [OVER PULSE]
2 Adjust the clearance so that the picker's supporting point is on the operator's side.
Clearance between bobbin and picker tip
0.95 - 1.05mm
4 - 30

Picker activation adjustment

back and forth to tune the
1
0.95 - 1.05 mm
Picker