I have two of these units and downloaded the manuals direct from the Keysight site.
This includes the schematics for the main unit and the various switch cards.
These are useful bits of kit
Good luck with yours.
Regards
Nigel
Sent from Samsung by banging a nail into a piece of wood.
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-------- Original message --------
From: Jos Raven
Date:19/04/2019 10:20 (GMT+00:00)
Subject: Re: [HP-Agilent-Keysight-equipment] Anybody have schematics or link for schematics of HP 3488A switch control unit?
Hi Tim,
I have this document ; HP-3488A-90012 3488A Service manual
I downloaded that from the Agilent website .
I do not know if it is still available there.
Look for it and if you do not find it I am happy to upload it to KO4BB.
Regards,
Jos Raven PA0AMX