Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, how was the "...adjust gears for lenses..." attempted to be done please?
Sorry, but the question was how was it done please.
I re-checked the repair/Service Manual and there is no provision for adjusting any gear.
Does the camera still display the MENU? ...previously taken pictures?
It would appear that there may be two (2) faults on this camera; zoom and CCD though both are on the mechanical side.
The only assistance I can then provide is a LINK to an electronic copy of the repair / Service Manual for a token fee should it be of interest.
Please post back how you would want to approach this and/or should additional information be needed.
Please see Premium Service Offer.
Yes, I have sent the offer through a private message sent by the site.
Please check your inbox.
Perhaps a second opinion from other members of the site or an alternative approach.
Bear with us as I re-open the question by opting out.
Still, good luck with the Panasonic.