HP Forum Archive 21

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Looking for HP-87 service manual Message #1 Posted by philippe_elie on 7 Nov 2012, 12:30 p.m. Hello, I just acquired a HP-87 that appeared to have received coffee or some other liquid that corroded several tracks of the PCB lying below the keyboard (the CPU board apparently). After cleaning the board, I discovered that some tracks were cut so I managed to repair them with thin copper wires, and now the main fuse burns after I power it on.... Removing the CPU board, the fuse stays alive and I checked the power supply that appears to work OK (at least it generates several voltages, 7V, 22V, etc;) so it looks like their is a short circuit somewhere in the CPU board that I could do spot visually. In order to move forward in the problem determination, it would help to get a service manual for this beast but could not find one anywhere on the web. Has some of you guys got this document or a PDF ? Alternatively, - in case I cannot sort this out myself - is there anyone with H87 spare parts to trade ? Thanks in advance for your reply kind regards, Philippe

Re: Looking for HP-87 service manual Message #2 Posted by fhub on 7 Nov 2012, 3:18 p.m., in response to message #1 by philippe_elie Here's a site with tons of material: http://www.hpmuseum.net/collection_document.php And there seems to be what you're looking for, just search the site for "87ServiceManual" Franz Edited: 7 Nov 2012, 3:57 p.m.

Re: Looking for HP-87 service manual Message #3 Posted by philippe_elie on 8 Nov 2012, 2:07 a.m., in response to message #2 by fhub Thanks a lot Franz ! that's great, I didn't know that site, looks like a gold mine... cheers Philippe Quote: Here's a site with tons of material: http://www.hpmuseum.net/collection_document.php And there seems to be what you're looking for, just search the site for "87ServiceManual" Franz

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