---
title: "Caveat Emptor"
type: "article"
slug: "addendum-errata"
url: "http://localhost/article/addendum-errata/"
markdown_url: "http://localhost/article/addendum-errata.md"
published_at: "2026-01-22T21:28:05+00:00"
modified_at: "2026-01-23T12:38:07+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "There are a few notes about the enclosed schematic. This schematic is basically the controller portion of the FDD unit and can apply to the older 3-piece units loosely. You will notice that at the top left is the diagram of the power supply- Nazir says that this is NOT what says we have under…"
post_tag:
  - name: "FDD 3000"
    slug: "fdd-3000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/fdd-3000/"
  - name: "FDD-3"
    slug: "fdd-3"
    taxonomy: "post_tag"
    url: "http://localhost/tag/fdd-3/"
indiv:
  - name: "Jay Siegel"
    slug: "jay-siegel"
    taxonomy: "indiv"
    url: "http://localhost/indiv/jay-siegel/"
publication_r:
  id: 49591
  title: "FDD Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/fdd-newsletter/"
authors_r:
  - name: "Jay Siegel"
    slug: "jay-siegel"
    taxonomy: "indiv"
    url: "http://localhost/indiv/jay-siegel/"
issues_articles:
  - id: 49630
    title: "FDD Newsletter v1 n2"
    type: "issue"
    url: "http://localhost/issue/fdd-newsletter-v1-n2/"
pages: "1"
pubdate: "July 1991"
archive_link: false
---

# Caveat Emptor

There are a few notes about the enclosed schematic. This schematic is basically the controller portion of the FDD unit and can apply to the older 3-piece units loosely. You will notice that at the top left is the diagram of the power supply- Nazir says that this is NOT what says we have under the hood!