Inserting the Plug of the Attachment
When using an accessory with a plug such as the external guideline marker or compact digital dual feed, insert the plug into the connector or jack on the back of the machine after attaching the body part to the machine.
Insert into a connector or jack according the form of the plug.
When inserting into a jack (such as installing the external guideline marker)
When inserting into a connector (such as installing the compact digital dual feed attachment)
IMPORTANT
When plugging or unplugging the cord, touch 
(Presser foot/Needle exchange key) to prevent the machine from electrical damage.