Canon EOS 40D Date and Time Battery Replacement - iFixit Repair Guide
If your date and time battery needs to be replaced, follow this guide to replace it. The required date and time battery is a CR2016 lithium.
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Canon EOS 40D disassembly to replace the main PCB
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Canon EOS 40D Date and Time Battery Replacement - iFixit Repair Guide
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Canon EOS 40D Shutter Button Replacement - iFixit Repair Guide
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Canon EOS 40D Shutter Button Replacement - iFixit Repair Guide
CANON EOS40D DS126171
Canon EOS 40D Shutter Button Replacement - iFixit Repair Guide
Canon EOS 40D Shutter Button Replacement - iFixit Repair Guide
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Canon EOS 40D Date and Time Battery Replacement - iFixit Repair Guide