[time-nuts] HP 3458A schematic/service manual request

Robert Benward rbenward at verizon.net
Mon Jun 7 20:54:58 EDT 2010


Hi Jeff,
I checked the Agilent website, and I assume you did also.  There is no schematic to be had.  What I have discovered with 
Agilent, is that certain instruments are made by particular divisions.  Some of those divisions consider those 
schematics to be proprietary and they will not release them now, not in the near future, and may never be released.  I 
ran across this with an LCR meter I bought on EBAY.  I tried to get schematics, as I thought he repair would be 
relatively simple.  It passed self test, appeared functional, but very erratic.  I thought the problem would be within 
the first few components near the front end.

I called the factory more than once, but the line I got was exactly what I described above.  I looked everywhere, but to 
no avail.  I hope you have better luck than I did.  Maybe you can find a parts unit on EBAY cheap.

Bob



----- Original Message ----- 
From: <jeffhook at comcast.net>
To: <time-nuts at febo.com>
Sent: Monday, June 07, 2010 7:26 PM
Subject: [time-nuts] HP 3458A schematic/service manual request


>
>
>
>
> Hi,
>
>
>
> I picked up a non-working 3458A at a swapmeet this weekend.
>
> It has err "202 Hardware Failure : Slave test-convergance".
>
>
>
> "Assembly-Level Repair Manual" says its a problem on the A1 board
>
>
>
> Does anyone have a schematic/service manual for this?
>
>
>
> Thanks
>
> Jeff
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there. 





More information about the time-nuts mailing list