Adjusting The Needle Up Signal Home Position For The Upper Shaft And Upper Shaft Motor - Brother RH-9820 Service Manual

7. ADJUSTMENTS
7-35. Adjusting the needle up signal home position for the upper shaft and
upper shaft motor
NOTE:
• Before carrying out this adjustment, check that the adjustments in "6-18. Upper shaft motor mechanism: Standard installation of
upper shaft motor unit and belt tension adjustment)" and "6-10. Lower shaft mechanism: Belt (upper shaft - lower shaft)
installation and belt tension adjustment" have been carried out correctly.
• After carrying out this adjustment, be sure to carry out the procedure in "7-36. Adjusting the upper shaft stop position".
0768B
1. Remove the face plate (1) and the upper cover (2).
2. Remove the rubber cap (3).
3. Insert the accessory pin (4) into the groove (6) in the balance collar from the hole (5) in the arm to stop the upper shaft from
turning. (Upper shaft: 22.5° position)
189
6. Press the ENTER key (9).
The home position detection operation will be carried out,
and the offset value (B) will be saved.
NOTE:
If you continue to the next step without pressing the
ENTER key (9), the offset value will not be changed.
7. Check the results of the adjustments.
* If the adjustments are not correct, repeat steps 5 and 6.
* To continue with another adjustment, repeat the
adjustment procedure from step 4.
8. Press the TEST key (10).
Home position adjustment mode will end and the sewing
machine will return to home position standby.
0767B
RH-9820