Just found this old thread. that got bumped up earlier this month. I'm an experienced alarm tech that used to work with Honeywell Protective Services until the late 80s and worked with a lot of Ademco systems after that. At the time I worked for Honeywell, they had a series of proprietary systems, the (as I recall) 2000, 3000, and 4000 series. They may have marketed the 5000 and 6000 panels after I left, but that's speculation.
Aside from being proprietary information, the manuals were pre-internet = too early to get online, even if it weren't illegal.
Sometime in the early-mid 90's, Honeywell bought Ademco and started re-labeling Ademco equipment as Honeywell equipment. Ademco/Honeywell has the Lynx series which includes the 5100, 5200, and 7000, as far as I can tell. There _may_ be a Lynx 6000, but I'm not that familiar with the series. The Lynx panels are keypad-control all-in-one, which I don't consider to give reliable security (too easy to defeat) and I have had minimal experience with them.
The problem with Honeywell not continuing to mention Ademco or the word Lynx in its nomenclature is that its old proprietary model numbers run into the Lynx model numbers and I'm not sure if they overlap or not; so sometimes not sure if I'm working with the old Honeywell or the newer Ademco models. They are completely different equipment.
If anyone else has questions about a "Honeywell X-thousand model", it would really be helpful if you included some additional information: Any other words or numbers on the keypad, or from the control box if it's separate from the keypad, or best of all a picture. Do you know if you have hardwired zones, and if so, how many? If you have wireless (RF) sensors on windows or doors, a picture of that would help too. If you know when the system was installed, that sometimes helps. I sometimes see questions about older models going back over 30 years that are perfectly fixable, but some younger technicians don't know what to do with them.