Electronics > Repair
Tektronix TDS7254B Signal Path Compensation fail issue and pass all Diagnostic
charlyd:
hi Matthus , no i parked the unit and went to the next one.
So, you have a similiar issue ?
btw somebody explain when 351 - Acquisition-->HFStep-->PhaseCal is displayed in Diagnostic.
charlyd:
hi is there any clearance on the M866 issue
M866CompCal failed i now have a TDS7404B with ACQ Diags all pass.
this 7404B unit also has a ch3 and ch4 error exact like the 7254B in first post. it looks like it should be a component or circuit for two channels. So that there are two of the same circuits/components for each two channels and one of the two circuits is failing.
so i guess there must be a relation. It is a bit difficult to dive deeper because you need to measure on the back side of the ACQ board. someone already experienced with let say extension cables or something?
specially to jaywalling because of your experience
any m866 news?
i am willing to pay $200 to whom who can point me to the M866 Comp Cal failed solution. like in first post
charlyd:
Hi its a while since....but i was stuck searching....
Today my eye caught this picture... not saying that this is found on the CSA7404B series.
but i am still curious if somebody has a failed "B series ACQ board" and is willing to pull of some heatsinks...
to get a better board layout... searching for the mysterious M866 in the B series 7000 scopes
exact board picture see post #7 above
because i have seen only ch 3 and ch4 failing and like in my case all channels failing. This would suggest there are two (or more but i doubt) of these chips equipt.
Navigation
[0] Message Index
[*] Previous page
Go to full version