Brother PR-600II, Service Manual

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Adjustment Needle bar rising length and needle space adjustment
1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [NEEDLE SPACING].
2. Press [[SPACING] POSITION]]. The reference needle bar for rising length adjustment is selected and the needle
bar case final assembly moves.
3. Press [CLOSE] and then [SENSOR TEST], and rotate the pulley manually until the numerical value for [MAIN
MOTOR ANGLE] is "199."
4. Loosen the 3 screws
1
, adjust the needle bar rising length and the needle space, and tighten the 3 screws
1
.
5. Check the needle bar rising length and the needle space for the other 5 needle bars.
*Key point
• Pressing [
←
] and [
→
] selects the other needle bars.
1
Torque
0.59 - 0.78 N-m
Foot set screw
4.46
The right end of the
needle matches the
rotating hook's tip when
the value of [MAIN
MOTOR ANGLE] is 199
(approx. 2 mm).
(Technical standard:
The right end of the
needle must match the
rotating hook's tip when
the needle bar is raised
1.8 - 2.2 mm from the
bottom point.)
1
1.8 - 2.2mm
The clearance between the
needle and rotating hook's
tip in the back/forth direction
should be 0.2 mm or less.
Rotary hook point
Needle gap
0.2mm