For an LX5, this is generally not a DIY job. On a compact camera with a fixed lens, reaching the sensor requires deep disassembly and is risky; the community advice was to send it to Panasonic/service, or consider replacement rather than attempting further teardown.

Also, don’t judge severity only by the dust-test image. Shooting a plain bright surface and then boosting contrast is meant to exaggerate sensor dust so you can find it. What matters is whether the spots are visible in normal photos. If you only see one or a few spots in that test and not in real-world images, it may not be worth servicing at all.

A practical approach:

1. Check several normal photos, especially bright skies or plain backgrounds.
2. If the spots aren’t noticeable, leave it alone and retouch occasional marks in post with a healing/cloning tool.
3. If the spots are clearly affecting everyday images, use professional service rather than trying to clean the sensor yourself.