Brother GT-3 Series Service Manual page 299

6. Replacing Parts
5.
Insert the FFC into the FFC Connector and lock it.
Confirm the direction of the FFC. Follow
this photo.
Insert the FFC directly into the connector.
If it tilts, it may cause severe damage.
<Important>
・
Never make the Flat Cable tilt when you connect; The electrical current may not be stable, which
may cause Head Temp High errors and missing nozzles, or even give serious damage to the Print
Head. The metal part may be damaged by inserting over again.
・
Do not put water around the connectors and metal parts; they may short-circuit and give serious
damage to the PCBs.
6.
Mount the Cover on the Print Head.
(1) Insert the FFC into the slit of the Plastic Cover.
(2) Pass the edge of the Plastic Cover between the Heat Sink and the PCB.
290
Push the locks at both edges to lock the FFC.
GT-3 Series