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Almost Dead HP-81
03-10-2016, 01:03 AM
Post: #4
RE: Almost Dead HP-81
(03-10-2016 12:30 AM)Dave Frederickson Wrote:  Correct. The "1127" chip is an 1820-1127 clock driver. At least that's what it looks like from the schematic. The HP-46 and 81 Service Manual is on the Museum flash drive. Smile

Thanks!!
I bought the CD11 and CD23 and this schematic was not there.
I will check the signals again.
If this chip IS bad, where can i get it?

Thanks again!

Francisco Suárez.
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Messages In This Thread
Almost Dead HP-81 - fxsuarezc - 03-09-2016, 11:00 PM
RE: Almost Dead HP-81 - Dave Frederickson - 03-10-2016, 12:30 AM
RE: Almost Dead HP-81 - fxsuarezc - 03-10-2016 01:03 AM
RE: Almost Dead HP-81 - Dave Frederickson - 03-10-2016, 01:13 AM
RE: Almost Dead HP-81 - fxsuarezc - 03-10-2016, 07:38 PM
RE: Almost Dead HP-81 - fxsuarezc - 05-04-2016, 03:39 PM
RE: Almost Dead HP-81 - wojtek - 03-10-2016, 12:31 AM
RE: Almost Dead HP-81 - fxsuarezc - 03-10-2016, 01:05 AM
RE: Almost Dead HP-81 - PANAMATIK - 05-04-2016, 05:56 PM
RE: Almost Dead HP-81 - bshoring - 05-04-2016, 10:33 PM



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