简介

If the Canon PowerShot G9 displays a card error "write locked", it could be simply the switch in the SD-card slot not working.

  • Good eyesight and a steady hand is necessary to complete this.
  • Be especially careful not to rupture any of the flex cables.
  • Work slowly
  • Keep the screws sorted, they have different sizes
  1. Be very careful not to touch any charged flash capacitor. Remove screws as marked. 2 for strap holder, 5 for back cover
    • Be very careful not to touch any charged flash capacitor.

    • Remove screws as marked. 2 for strap holder, 5 for back cover

    • Remove Back cover and strap holder

  2. Remove the two screws circled green Remove the buttons
    • Remove the two screws circled green

    • Remove the buttons

  3. Disconnect ribbon cable by lifting up flap Disconnect other cable (another flap) Remove jog dial unit
    • Disconnect ribbon cable by lifting up flap

    • Disconnect other cable (another flap)

    • Remove jog dial unit

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  5. Remove the one screw circled green Remove the finder dial
    • Remove the one screw circled green

    • Remove the finder dial

  6. Remove screw and lift LCD upwards very carefully. Do not put any strain on cables Carefully remove flex cables. The left has a flap that needs to be opened (up), the right just needs to be pulled out. Be careful when re-inserting the right one, you can easily damage the fragile cable. Remove the LCD
    • Remove screw and lift LCD upwards very carefully. Do not put any strain on cables

    • Carefully remove flex cables. The left has a flap that needs to be opened (up), the right just needs to be pulled out. Be careful when re-inserting the right one, you can easily damage the fragile cable.

    • Remove the LCD

  7. Remove screws Disconnect connectors for Lens assembly Carefully disconnect the tiny cable
    • Remove screws

    • Disconnect connectors for Lens assembly

    • Carefully disconnect the tiny cable

    • Next step is removing the PCB. I made the mistake not to take care about the battery compartment switch. If you are not careful, the black lever will break off. Not a problem though, because then the camera will work also with opened battery compartmen

    • Remove main PCB by slightly bending outward the cover for the jack with fingernail. Now lift the PCB slightly upwards.

    • Look under the PCB, there is a connector that needs to be separated by means of a small screwdriver or spudger.

    • Re-attaching the connector is not easy. I used a small screwdriver to carefully press the connector back in place.

    • This is not the official method to do this. Normally the Top cover and several other parts need to be removed too.

  8. Measure continuity with a multimeter on SD-card slot write protect switch If it is not working, short the two points with a bodge wire, so write lock is disabled
    • Measure continuity with a multimeter on SD-card slot write protect switch

    • If it is not working, short the two points with a bodge wire, so write lock is disabled

    • Another possible fault is a broken soldering joint holding the case of the SD-card reader in place.

结论

Repeat the steps in order to reassemble your device.

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Thomas Widmaier

于2013年03月05日注册

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