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6.
Main Shaft Encoder LED (Test 1)
Normal Operation
•
The TEST 1 LED will turn ON when the
main shaft encoder transitions to the OPEN
region of the encoder disk. It will turn OFF
when it transitions to the CLOSED portion as
the disk passes through the optical encoder.
As you rotate the hand wheel in the normal
direction of motion (counterclockwise when
looking from the rear of the machine), the
LED should toggle ON just as the take-up
lever reaches its highest point in the stitch
cycle. This is the Needle Up position. The
needle at this point is on its way down, but
should still be slightly above the hopping
foot.
Faulty Operation Symptoms
•
The LED does not toggle either on or off
over a full rotation of the hand wheel.
•
The LED toggles to ON at a point other than
when the take-up lever is at its highest
position.