Canon EF-S 17-85mm lens Disassembly/fix

Alex Green ve 2 diğer katkıda bulunanlar

En son January 3, 2025 tarihinde güncellendi

40 dakika - 1 saat

Orta

Topluluk-Katkılı Kılavuz

Giriş

1. adıma git

Had an issue with this lens where it would retract after zooming and there was a rattling from inside the lens so I decided to take it apart.

If possible, try to work in an environment with minimal dust. The goal is to try to avoid dust from getting inside of the lens as much as possible.

Neye ihtiyacın var

Aletler

Daha fazlasını göster…

Adım 1 Removing the Lens Mount

Canon EF-S 17-85mm lens Disassembly/fix, Removing the Lens Mount: adım 1, 2 resimden 1.

Canon EF-S 17-85mm lens Disassembly/fix, Removing the Lens Mount: adım 1, 2 resimden 2.

As with all canon EF style lenses, the first step is to remove the two screws holding the terminals to the lens.
Remove the four screws holding the lens mount to the lens.
Gently remove the inner plastic ring from the outer metal lens mount to free the terminals.

Düzenle

Adım 2

This step involve handling sensitive electronics. Avoid static discharge.
Pull up on the plastic outer barrel that covers the back of the lens (there are no screws holding this part on).
Caution, there is a ribbon cable that connects this part to the main PCB board, so be gentle when removing the outer barrel.
The two ribbon cables plugged into the brown and beige connector are locked in. You must gently lift the locking flap up before you can remove the cables.
iFixit connector guide
Gently unplug the remaining four ribbon cables from the main PCB board.
Remove the one screw holding the PCB board to the lens and set it to the side.

Düzenle

Adım 3

Unscrew the six screws from the top ring.
Using caution not to damage any of the ribbon cables, gently pull of the top ring.

Düzenle

Adım 4

Remove the rubber zoom grip from the lens.
Peel off the dust shield.
The dust shield is a flexible black piece of plastic that looks similar to electrical tape.
Unscrew the one screw underneath the dust shield and remove the zoom brush (the piece of metal the screw holds in place).
The zoom brush is comprised of ten fragile pins. Please use caution while handling this part, as damage to its pins may result in losing function of the autofocus on the lens.

Düzenle

Adım 5

There are three screws located in the slots around the zoom ring. For each one:
Remove the screw.
Pull out the metal spacer using a pair of tweezers.

Düzenle

Adım 6

Back to the rear of the lens, remove these six screws.
Lift the rear housing off of the lens.

Düzenle

Adım 7

During my disassembly these two tiny screws appeared along with this metal bar. Turns put this was the cause of my issues. I found where it belongs and screwed it back in.
Assembly is these steps but backwards. Be sure when reassembling the lens housing make sure to line up the black rod with the 2 prong silver fork or your zoom will no longer work.

Düzenle

Sonuç

To reassemble your device, follow these instructions in reverse order. Be sure to line up the black rod with the 2 prong silver fork when putting the lens back with the housing.

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