foreach($site in $webApplication.Sites)
{
    foreach($web in $site.AllWebs)
    {
        foreach($list in $web.Lists)
        {
$pages= $list.GetItems($query);

            if ($pages)
            {
                foreach($item in $pages)
                {



$manager = $item.File.GetLimitedWebPartManager([System.Web.UI.WebControls.Webparts.PersonalizationScope]::Shared);
                    $webCollection = $manager.WebParts;
                    if($webCollection.Count -ne 0)
                    {
                    for($i =0;$i -lt $webCollection.Count; $i++)
                        {
                            $wp = $webCollection[$i];
                            write-host $wp.Title;
                            write-host $wp.GetType().AssemblyQualifiedName
                            ....