Sigma 170-500mmAPO DG for Canon focus not working

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rbsolanki New Member • Posts: 1
Sigma 170-500mmAPO DG for Canon focus not working

I have Sigma 170-500mm APO DG for Canon. It is not focusing either Auto or Manual. In auto I can hear some motor noise but distance scale does not move. In manual the focus ring rotates but distance scale does not move. What could be problem?

Where can I find service manual for this lens?

Thanks in advance.

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