David Kirkby wrote:
[EMAIL PROTECTED] wrote:
I know know the S/N of this unit, although I don't have it yet. The S/N of the 5370B is 2904A02491. If anyone is able to determine the date (and/or part number) of the manual that will cover this S/N, I would like to know.Hi David,
I will check with another guy tomorrow (the last surviving technician), but one person "in the know" has this to say:
I gather there were some changes, over the years, so there is no point me buying a manual that only covers up to version earlier than mine.
It would also be useful to know if the manuals for later releases were completely new manuals, or just had a few pages extra loose pages slipped in. If the latter, could they could have fallen out of course, so care is needed when buying a manual.
Hi David --
The first four digits of an HP serial number tell you the revision level -- the first two numbers plus 60 are the year (ie, 29 is 1989, quite late for a 5370), while the last two digits are either the week or a series number, I'm not sure which. These digits only guarantee that your unit was built after that date, but they are a good guide to relative lateness. HP manual changes are keyed to that four-digit series. Usually, new manual editions come out fairly infrequently, and they include change pages showing all the series changes up to the version shown in the manual. But in reality, the changes are generally pretty small and I usually don't worry much about matching up the series number unless I have serious repair work in front of me. (Though note the recent discussion about the long time constant in the 5061A Cesium -- there are at least three manual versions available, and there are some significant difference in the manuals and the way the schematics are laid out -- but the 5061A was a big ticket item that was in production for a long time.)
John
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