Schematics for HP38E - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: General Forum (/forum-4.html) +--- Thread: Schematics for HP38E (/thread-8353.html) |
Schematics for HP38E - jwhsu - 05-15-2017 04:11 PM I recently received a nonfunctional HP38E and am now attempting to repair it. The battery compartment looks good and there doesn't appear to be any leakage anywhere. Opening up the calculator reveals it is one of the earlier models that is held together by clips. Does a repair manual exist for the Spice series of calculators? If not, does anyone have a schematic of the power supply board so I can make sure that it is working properly? Thanks. Jack RE: Schematics for HP38E - Geoff Quickfall - 05-15-2017 04:41 PM Hello Jack! Failure modes on the Spice series:
As far as wiring diagrams of the power supply, i direct you to this site, (Kees VanderSanden's excellent HP site) scroll down to find the spice series power supply schematic: Power supply diagrams Various articles for opening the shell and spice restorations. Links at bottom of page Cheers, Geoff This is not directed at anyone in particular but web searches (google etc) are your friend. RE: Schematics for HP38E - jwhsu - 05-15-2017 06:22 PM Geoff, Thanks. I think I saw this before, but promptly forgot about it (I definitely need to work on my search engine prowess). Jack RE: Schematics for HP38E - PANAMATIK - 05-15-2017 07:39 PM (05-15-2017 06:22 PM)jwhsu Wrote: Geoff, I got these HP-32E schematics from the HHC Handheld Computer Club London from Tony Duell. It is identical to the HP-38E, only the ROM contents differs. [attachment=4776][attachment=4777][attachment=4778][attachment=4779][attachment=4780] I hope this helps Bernhard RE: Schematics for HP38E - jwhsu - 05-15-2017 08:13 PM (05-15-2017 07:39 PM)PANAMATIK Wrote:(05-15-2017 06:22 PM)jwhsu Wrote: Geoff, This helps a lot. Thanks. Jack RE: Schematics for HP38E - Geoff Quickfall - 05-15-2017 09:28 PM Yes Tony's wiring diagrams are wonderful and I can only recommend that people join or visit HPCC: I am fortunate as I travel and try to make the monthly meetings at imperial college. The resources, library, members including Tony Duells' special technical expertise are incredible. HPCC RE: Schematics for HP38E - franz.b - 05-16-2017 07:41 AM (05-15-2017 04:41 PM)Geoff Quickfall Wrote: Hello Jack!Great! Are somewhere anything similar about hp49g? And for hp27s? |