A good manual. Had everything i needed to make the repair.
Text excerpt from page 21 (click to view)
CX-BK2
4-3.
HOW TO INSTALL THE GEAR (MODE C)
1 Align the mark on the rotary encoder (S771) with the projection of the assy. 2 Check that the cam (BU U/D) can not be rotated in the direction of arrow. 3 Install the gear (mode C)
rotary encoder (S771) gear (mode C)
cam (BU U/D)
mark
projection � bottom view � front �
chassis
4-4.
HOW TO INSTALL THE GEAR (MODE CAM)
1 Slide the shaft in the direction of arrow. 2 Align mark A on the gear (mode cam) with mark B on the slider (mode cam) assy, then install the gear (mode cam). 3 Check that mark C on the gear (mode cam) is in alignment with mark D on the cam (gear).