Canon PIXMA MP510 Service Manual page 22

(5) Timing sensor unit cable wiring
i) Fit the cables in the flexible cable guide, and attach them to the main chassis with filament tape at 2 locations, as shown below
(blue circles).
ii) Pass the timing sensor unit cables (No. 2 in the photo below) through under the cable between the main board and the ASF_PE
sensor board (No. 1 in the photo below).
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