Brother RH-9820 Service Manual page 199

(A)
0769B
0784B
0770B
0784B
(B)
0771B
4. While holding down the
switch at the ON side (8).
The mode will switch to input checking mode.
5. Press the key (7) or
signal (A) to "18 (needle up signal)".
6. Tilt back the machine head and remove the motor cover (11)
from the upper shaft motor (10).
7. Loosen the bolt (12) for the needle up magnet of the motor
by 90° only.
NOTE:
Do not loosen the screw by more than 90°. If it is
loosened too much, the parts may touch the P. C. board
and damage may result.
8. Move the position of the slot (13) to the point where the
panel display (B) switches from "ON" to "OFF", and tighten
the bolt (12) at that point.
9. Press the POWER switch at the OFF side (14) to turn off the
power.
RH-9820
7. ADJUSTMENTS
key (7), push the POWER
key (9) to set the checking
190