Figure 4-6 Front cover light shield cam
When a new type shutter is installed, the cam in the light shield must be inspected and changed if necessary. The new cam should be installed in the same place and manner as the old cam (Figure
If new cam are not available, it will be necessary to install a new front cover assembly.
B. MIRROR COVER / BOOT ASSEMBLY
The mirror cover assembly consists of the mirror cover, the boot, and the viewing mirror. Because of its construction, ti is not feasible to disassemble the mirror cover assembly itself and, therefore, whenever one of its major components fails the entire assembly is replaced. The mirror cover could sustain damage in the form of cracks or broken hinges, or overall distortion. The boot could be cut, torn and damaged by wear. The mirror could be loose or displaced in its mounts, broken, or its surface damaged beyond cleaning. Should any of these faults be evidenced, replace the assembly.
NOTE : On older cameras, a coding system is used to match Fresnels and mirror covers. When changing mirror cover and Fresnel assemblies, correct color coding must be employed to prevent unacceptable tolerance buildup. This is usually demonstrated by difficult cloding the camera, etc. The chart below shows the color codes to be used : a red coded Fresnel goes with either a red, yellow, blue or white mirror cover; not with a green mirror cover. The choice should be the first in order of the chart. Red first, yellow second, etc. The color code is located on the mirror cover, on the underside, upper
COLOR CODES USED WHEN CHANGING
FRESNELS AND MIRROR COVERS
MIRROR COVER
Fresnel | ● Red | ●Yellow | ● Blue | ●Green | ● White |
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● Red | x | x | x |
| x |
● Yellow | x | x | x | x | x |
● Blue | x | x | x | x |
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● Green | x | x | x | x |
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● Black | x | x |
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Newer cameras employ a universal Fresnel/ Mirror cover assembly. No matching of coded parts is necessary.
Figure 4-7 Replacing light shield cam
Removal
1.Erect the camera to
2.Open and remove the front cover.
3.Remove the decorative leather covering from the bottom cover.
4.Remove the four