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survey of 400 E and 400 F service manual editions?

Fred Thal All Messages By This Member #90718 Hello everyone, Where do I find the list of service manual editions for the 400 E/EL and 400 F/FL AC voltmeters? Or, copies of the later editions of these product service manuals? I'm looking at some circa mid 1980s 400 FLs with main (A2) boards that are NOT covered in the earlier editions (my copy is July 1974) of the 400 F/FL service manuals. Thanks.
Dave / NR1DX All Messages By This Member #90720 As far as I know there is no comprehensive list of manuals for any HP units of this era. If you can tell the board p[art number or the serial number I may or may not have a manual to cover a specific unit -DC manuals@... toggle quoted message Show quoted text On 8/22/2018 7:07 PM, Fred Thal wrote: Hello everyone, Where do I find the list of service manual editions for the 400 E/EL and 400 F/FL AC voltmeters? Or, copies of the later editions of these product service manuals? I'm looking at some circa mid 1980s 400 FLs with main (A2) boards that are NOT covered in the earlier editions (my copy is July 1974) of the 400 F/FL service manuals. Thanks. -- Dave Manuals@... www.ArtekManuals.com
Fred Thal All Messages By This Member #90723 Thanks for the reply. I'm looking for a 1980 or later edition (printing) of the 400 F/FL operating and service manual. My guess is that 1980 was around the time that the internal model number (serial number prefix) changed from 0950A to 2213A. The later 400 F manual editions would have the newer 00400-66514 A2 board schematic, which is not shown in the earlier manuals. Thanks again.
Jeremy Nichols All Messages By This Member #90725 About all you can do is to find a manual and make your own list of every series included in the manual and its change sheets. Then survey units for sale (eBay and others) and add their series prefix numbers to,your list. That's about the only way to get a list, unless you run across an aficionado who has a collection. Jeremy ? toggle quoted message Show quoted text On Wed, Aug 22, 2018 at 6:03 PM Artekmedia <manuals@...> wrote: As far as I know there is no comprehensive list of manuals for any HP units of this era. If you can tell the board p[art number or the serial number I may or may not have a manual to cover a specific unit -DC manuals@... On 8/22/2018 7:07 PM, Fred Thal wrote: > Hello everyone, > > Where do I find the list of service manual editions for the 400 E/EL > and 400 F/FL AC voltmeters? > > Or, copies of the later editions of these product service manuals? > > I'm looking at some circa mid 1980s 400 FLs with main (A2) boards that > are NOT covered in the earlier editions (my copy is July 1974) of the > 400 F/FL service manuals. > > Thanks. > > > > -- Dave Manuals@... -- 4.
Dave / NR1DX All Messages By This Member #90727 Fred For starters I Only have a 1968 Copy of the manual at the moment. Serial prefix 2213A is the last week of March (13th week) of 1982. -DC manuals@... toggle quoted message Show quoted text On 8/22/2018 9:35 PM, Fred Thal wrote: Thanks for the reply. I'm looking for a 1980 or later edition (printing) of the 400 F/FL operating and service manual. My guess is that 1980 was around the time that the internal model number (serial number prefix) changed from 0950A to 2213A. The later 400 F manual editions would have the newer 00400-66514 A2 board schematic, which is not shown in the earlier manuals. Thanks again. -- Dave Manuals@... www.ArtekManuals.com
Dale H. Cook #90730 At 07:07 PM 8/22/2018, Fred Thal wrote: Or, copies of the later editions of these product service manuals? Have you looked at the copy of the 400E/EL manual on the Keysight site? That copy has a printing date of Mar-1986 and has change sheets dated as late as 1984. The 400F manual there is what you have. Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
Fred Thal All Messages By This Member #90731 > Have you looked at the copy of the 400E/EL manual on the Keysight site Thanks for the suggestion. I once imagined that the E/EL and F/FL differed mainly by the F's extended range and low pass filter, but I discovered that they are in fact different animals, each with their own main boards.
Peter Brown All Messages By This Member #90740 I have the following all on fiche ? 400E/EL? OP SVC Serial PFX 536? 00400-90056 1 June 1970 ? 400E/EL OP SVC Serial PFX 949 536 00400-90057 4 June 1972 ? 400E/EL OP SVC Serial PFX 1208A 00400-90066 January 1976 ? 400F/FL OP SVC Serial PFX 0950A 00400-90063 January 1976 ? Peter ?

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