[HP48GX] Testing repaired keyboard
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07-24-2016, 11:59 AM
Post: #3
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RE: [HP48GX] Testing repaired keyboard
Keep in mind that in the 48S and 48G series, the 'ON' circuitry is NOT part of the regular keyboard matrix.
The 'ON' key provides a direct battery connection to a pin on the main processor IC. Schematic here: http://www.hpcalc.org/details.php?id=3543 TomC |
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Messages In This Thread |
[HP48GX] Testing repaired keyboard - fnas - 07-21-2016, 09:29 AM
RE: [HP48GX] Testing repaired keyboard - mfleming - 07-21-2016, 11:29 PM
RE: [HP48GX] Testing repaired keyboard - TomC - 07-24-2016 11:59 AM
RE: [HP48GX] Testing repaired keyboard - TomC - 07-24-2016, 01:52 PM
RE: [HP48GX] Testing repaired keyboard - fnas - 07-24-2016, 05:00 PM
RE: [HP48GX] Testing repaired keyboard - mfleming - 07-25-2016, 01:58 AM
RE: [HP48GX] Testing repaired keyboard - fnas - 07-25-2016, 12:32 PM
RE: [HP48GX] Testing repaired keyboard - mfleming - 07-25-2016, 02:32 PM
RE: [HP48GX] Testing repaired keyboard - fnas - 07-25-2016, 05:17 PM
RE: [HP48GX] Testing repaired keyboard - mfleming - 07-26-2016, 02:42 PM
RE: [HP48GX] Testing repaired keyboard - fnas - 08-01-2016, 12:00 PM
RE: [HP48GX] Testing repaired keyboard - mfleming - 08-01-2016, 03:49 PM
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