Viewfinder Mask Installation - Canon A-1 Repair Manual

2. Install the prism toward the rear and right (winding)
sides.
3. Run light shield (To ray Si l icon SCS002 Black) between
the prism, spacers and frame so that it covers
completely to block light leaks. Apply on all sides
except the rear (eyepiece') side. (Fig. 2-33)
Liquid Light
Shield
Frame Spacer
Fig. 2-33
2.27 Viewfinder Mask Installation
1. Install the mask so that the narrow side is to the
right (winding side).
2. Press the mask toward the standard surfaces. (Fig.
2-34)
Wide
Side
Fig. 2-34
Marks Indicate
Standard Surfaces
Narrow
Side
45