Brother NV4000D Service Manual page 310

Adjustment Shuttle adjustment
1. Adjust the needle thread block.
2. Remove the thread guide hook.
3. Turn the pulley by hand until the base line comes to the top.
4. Select test mode "22". (NP sensor mode)
5. Turn the pulley by hand until it reaches the position the buzzer stops (upper shaft rotation angle 32°).
6. Press [Close].
7. Select test mode "28".
8. As shown in the attached photo1
↓
9. Select THPM " " and then lower the shuttle to the limit.
10. Turn the power off.
"continued on the next page"
1
4 - 16