Canon EF 50 mm f/ 1.8 Lens 服务手册

Reassembly

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Wipe dust off the internal lens glass surfaces

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It’ll be too late after reassembly

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Rewind the process

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Put the focus adjuster ring on the lower part of the inner tube

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Make sure the orientation is correct

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Put the upper part of the inner tube over it and attach them with 
a snap

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Put it into the outer tube and turn the focus adjuster ring

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Attach the clasp with the screw

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Attach the side cover

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Attach the metallic terminal part with the two micro screws

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Prior to attaching the inner back cover

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Attach the inner back cover