Brother S-7300A - Thread Trimming and Tension;Wiper Mechanisms

S-7300A
4. MECHANICAL DESCRIPTIONS
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4-5. Thread trimming mechanism
Thread trimming mechanism operation sequence
The illustration below shows the mechanism with the high-speed rotary hook removed.
1) When thread rimming signal is input
1. Solenoid plunger
2. Solenoid lever
3. Thread trimmer cam lever shaft
4. Roller (Moves to above (1))
(1) Thread trimmer cam
1039D