Adjusting The Upper Shaft Stop Position - Brother RH-9820 Service Manual

7. ADJUSTMENTS

7-36. Adjusting the upper shaft stop position

Adjust the stop position so that upper thread loops are maintained when the upper thread is trimmed.
191
0973B
0974B
0820B
(A)
0772B
1. While holding down the
POWER switch at the ON side (2).
2. Press the start switch (3).
The motors will carry out home position detection, and then
the work clamp will be lowered to the ready position and the
sewing machine will switch to upper shaft stop position
adjustment mode.
* In upper shaft stop position adjustment mode, the offset
value (A) is displayed.
3. Press the start switch (3) again until the upper shaft begins
to move.
4. After the upper shaft stops, check that the arm reference line
<a> and the upper shaft pulley reference line <b> are
aligned.
[If they are not aligned]
Press the or
and then repeat step 3.
* The setting range is -5 ° - +10° (in units of 1°).
[If they are aligned]
Continue to the next step.
5. Press the ENTER key (5).
The offset value will be stored.
NOTE:
If you continue to the next step without pressing the
ENTER key (5), the offset value will not be changed.
6. Press the TEST key (6).
Upper shaft stop position adjustment mode will end and the
sewing machine will return to home position standby.
RH-9820
and keys (1), push the
key (4) to change the offset value (A),