Canon CanoScan N670U Sensor Bar Replacement

Open up your Canon CanoScan N670U to an upright position.

Turn your device so that you're facing the long side of the Canon CanoScan N670U.

Locate the small crevice between the plastic components of the scanner bed and the scanner base.

Carefully insert a metal spudger tool in the crevice and slowly cut through the adhesive between the plastic components.

Once the adhesive strip is sliced through, the plastic bar that is attached should release. Set aside the plastic bar.

Repeat steps 2-4 for the other side of the scanner.

Use your hands or a metal spudger tool to push the plastic bar at the bottom of the glass scanner bed forward until you can't push it any farther.

Insert the metal spudger tool underneath the glass scanner bed. The front of the scanner bed should be resting on top of the tool.

Slowly pull the glass scanner bed towards you and set the piece aside.

This is the sensor bar that you will replace.

Locate the small plug where the white strip of cable is connected to.

Unfurl the cable strip if it's tucked in.

Gently use tweezers or your fingers to rock the cable back and forth to disconnect the it.

Locate the small metal spring behind the front buttons of the Canon CanoScan N670U.

Use tweezers to gently remove the metal spring from the plastic hook.

Flip the sensor bar over and unwind the belt from the gear system.

Remove the sensor bar from the scanner and replace it with the new one.