Brother S-7200B Service Manual page 67

B. For the control box panel
1) Signal setting entry
2) Memorizing the maximum forward position
1. Turn off the power switch (1).
2. Set DIP switch No.4 to ON.
0652B
3. While pressing the end backtack key (2), turn on the
power switch (1).
"PF" will appear in the stitch number display (3).
3195M
With the treadle depressed forward to the maximum forward
position, press the start backtack key (4).
"Pn" will appear in the stitch number display (3).
3196M
S-7200B
11. TREADLE UNIT ASSEMBLY
3193M
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