[time-nuts] HP 3458A ISOLATOR DTACK err @ pwr up
Brooke Clarke
brooke at pacific.net
Mon Jul 27 23:55:22 UTC 2009
Hi:
At power up the HP 3458A briefly says TESTING RAM and all the panel pixels are
on then displays ISOLAOR DTACK. The repair manual says:
201 Outguard Controller A5.
The A6 Outguard pwr supply shows 5.13 for both of the 5 volt supplies, right in
the middle of the acceptable range. The +15 red wire at P3 reads 14.0, but I
don't see a spec for it.
Is there any component level information on these DVMs?
--
Have Fun,
Brooke Clarke
http://www.prc68.com
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