Brother RH-9820 Service Manual page 197

5. [Adjusting the X home position]
Carry out the following adjustments so that the distances <a> (when the looper base is turned 0°) and <b> (when the looper
base is turned 180°) between the end of the projection on the throat plate (5) and the sides of feed base cover R (6) and feed
base cover L (7) on the feed base are equal.
5-1. Turn the looper base by hand and measure the distances <a> and <b>.
0766B
(When the looper base is turned 0°)
(When the looper base is turned 180°)
5-2. When you press the
offset value (B), the feed base (7) will move as the keys
are pressed. Repeat this step until distances <a> and <b>
are equal.
* The setting range is -2.00 - +2.00 mm (in units of 0.05
mm).
0818B
[Adjusting the Y home position]
Carry out the following adjustments so that the distance <c>
between the rear of the feed base (7) and the hollow in the bed
(8) is 18 ± 0.2 mm.
5-3. When you press the
offset value (B), the feed base (7) will move as the keys
are pressed.
* The setting range is -2.00 - +2.00 mm (in units of 0.05
mm).
RH-9820
7. ADJUSTMENTS
0765B
or key (1) to change the
or key (1) to change the
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