EMC 10 TRIMMER NOT HOME

Osman Bayrak

TRIMMER NOT HOME:

  1. Check under the needle plate for thread build up, as it can stop the Movable Knife from moving to the Home Position. Remove the excess if it is present.
  2. Check the Under Thread Presser as seen in the Technical Manual (Trimmer Option Section)
  3. Use the section in the Technical Manual under "Trimmer Options" to check proper positioning of the Movable Knife with the Trimmer Cam positioning, and the Cam Follower for proper Movable Knife Home Position.
  4. If the Cam Follower is stuck inside the cam, the blade often times won't move to the home position. It can also stop Indicator from becoming properly positioned for the home position seen in the Technical Manual. (Trimmer Options Section)
  5. If the Cam Follower won't pull out of the cam, power the machine off. Remove the Z Motor Cover seen in the Parts Manual. Rotate the Shaft Pulley, seen in the Technical Manual, left & right, and apply slight pressure to the Cam Follower Pin to see if the pin will pop back out of the cam.
  6. If it won't, the Cam Follower Bracket may be worn. Call your distributor for a service call if this is evident.
  7. Check to see if the Connecting Link is still connected to the Movable Knife. If it isn't, remove the Front Bed Plate, and place the Connecting Link back on the Movable Knife Drive Arm Front Pin, as seen in the Technical Manual. (Trimmer Option Section)
  8. Check the Connecting Link Drive Block Screws to see if they are tight when the Movable Knife is at the Home Position, as seen in the Technical Manual. (Trimmer Option Section)
  9. Power the machine down. Check to see if the Photo Sensor is clean by using a Q-Tip and Rubbing Alcohol.
  10. Use the instructions listed in the Technical Manual to see the whole procedure for checking the Movable Knife Home Position. (Trimmer Option Section)
  11. Make sure the UTC seen in the Operator's Manual (Head Timing Section) isn't stopping the Movable Knife from moving to the Home Position. If it is, adjust it to it's proper position according to the information. If the UTC Sensor Arm is bent out of normal shape, and can't be fixed, call your distributor for a replacement or service call.
  12. Clean the Optical Sensor shown in the section of the Trimmer Option that shows the information relating to the Movable Knife Home Position. Clean the slit in the sensor with a piece of cloth, and rubbing alcohol.