Error 20 on a Canon 6D indicates a mechanical malfunction, which is most commonly related to either the camera's shutter mechanism or a stuck mirror. This error typically prevents the camera from taking photos or functioning correctly, prompting the user to turn the camera off and on again.
Understanding Error 20 on the Canon 6D
When your Canon 6D displays "Err 20," it's signaling an internal issue with moving parts essential for image capture. Unlike software glitches, this error points to a physical component failure or obstruction.
Key Components Affected by Error 20
The two primary suspects for Error 20 are the shutter and the mirror assembly. Understanding their roles helps in diagnosing the problem:
| Component Affected | Role in Camera Operation | Typical Symptoms of Malfunction |
|---|---|---|
| Shutter | Controls the duration light hits the sensor. | Photos are completely black/white, streaks, or oddly exposed. |
| Mirror | Directs light from the lens to the viewfinder. | Mirror stuck up or down, dark/blurred viewfinder, loud noises. |
Common Causes of Mechanical Malfunctions
Several factors can lead to Error 20, impacting the delicate mechanics within your Canon 6D:
- Physical Impact: Dropping the camera or bumping it can misalign or damage internal components.
- Wear and Tear: Over time, with extensive use, parts like the shutter can reach their operational limit and fail.
- Dust and Debris: Small particles can enter the camera body and obstruct the movement of the mirror or shutter blades.
- Battery Issues: A low or faulty battery can sometimes prevent mechanisms from operating correctly, although this is less common for mechanical errors.
- Lens Issues: A poorly seated or incompatible lens might occasionally trigger mechanical errors if it interferes with mirror movement.
Initial Troubleshooting Steps for Error 20
Before considering professional repair, you can attempt a few straightforward troubleshooting steps. Always handle your camera with care during these processes.
- Power Cycle:
- Turn the camera off.
- Remove the battery and any attached lens.
- Wait for at least 15-20 minutes.
- Reinsert the battery and lens, then turn the camera on. This can sometimes reset the system and clear minor glitches.
- Inspect the Mirror:
- With the lens removed and the camera off, gently look into the mirror box.
- Check if the mirror is stuck in the up or down position, or if there's any visible obstruction. Do not touch the mirror with your fingers.
- Check Lens and Contacts:
- Ensure the lens is properly mounted and locked.
- Carefully clean the electronic contacts on both the lens mount and the lens itself using a clean, dry microfiber cloth.
- Try a Different Lens/Battery:
- If you have another compatible lens, try using it to rule out a lens-specific issue.
- Test with a fully charged, known-good battery to ensure power supply isn't the problem.
- Remove Accessories:
- Take off any external accessories like flash units, battery grips, or remote triggers, as they can sometimes interfere.
- Gentle Taps (Caution Advised):
- In rare cases, a very gentle tap on the bottom of the camera (while powered off) can dislodge a stuck mirror. This should be done with extreme caution and only as a last resort for minor jams.
When to Seek Professional Repair
If the above troubleshooting steps do not resolve the Error 20, it's highly likely that there is a significant internal mechanical failure requiring expert attention.
- Complex Internal Damage: Issues like a broken shutter curtain, motor failure, or a severely misaligned mirror assembly require specialized tools and knowledge to fix.
- Risk of Further Damage: Attempting complex DIY repairs can often lead to more expensive damage or render the camera irreparable.
- Cost-Benefit Analysis: For older cameras, consider the cost of repair versus investing in a newer model. However, for a valuable camera like the 6D, repair is often a cost-effective solution.
For reliable service and to ensure your camera is handled by experienced technicians, it's best to consult a Canon authorized service center or a reputable camera repair shop. You can find more information on camera support and service options on official manufacturer websites, such as the Canon Support page.
