Canon PIXMA MX340 Simplified Service Manual page 27

(4) Scanner unit removal
Remove the ADF first. Then while pressing the tabs on the both sides of the scanner unit inward
(indicated by the red arrows in the photo below), lift the scanner unit on one side, then the other.
(5) PCB connector layout and flexible cable wiring
< Without cables >
CR
Scan Motor
Card (MX350
NCU Board
series only)
ASF / PE Sensor
Panel 2 (MX350 series only)
Scanner Panel 1 LF Encoder
WLAN
CR Motor
LF Motor
(26/37)
< When connected with cables >