Your manual will be perky if you can answer YES to the following:
Does the manual describe the procedures after the version update?
Do the procedures work? Have the screen-captures been updated to show the current running version?
Have the screen-captures been updated to show available new options, pop-ups and floating windows?
In cases where windows can be accessed in one or more ways, are they fully described in the Getting Started, Quick-start or the Procedure itself?
Does every heading 1, 2, & 3 have a lead in sentence introducing the subject?
Do you have updated fields, styles or buttons which you need to carry over from other files to update the template?
Have you checked your Grammar & Spelling
Also, Technical Manuals should be tested in the same way the product is tested: Documentation bugs should be added into the QA bug report system under Docs.
The documentation and products teams should review the data, while the QA should test the data.