[Misc] power switch

[ssbmi]

I am working on a MX-M 700n. My problem is mfp will not power back on once it has been turned off with the power switch(outside switch). Unless reset using the main power switch(inside switch) first.

Things I have done so far : Changed out both power switches. Inside, and outside, Changed out Sub power supply pwb. Changed out AC pwb, and DC power supply pwb.

Any information will be looked into. thank you in advance.

[igi]

Re: power switch

hi try to borrow a whole display panel from another machine to eliminate

[ssbmi]

Re: power switch

hi try to borrow a whole display panel from another machine to eliminate

Thanks for the idea.. I tried the display panel from a mx-m 550. no joy, problem still the same.

[igi]

Re: power switch

ok I thing you narrowed it down to (scanner control pwb)

[ssbmi]

Re: power switch

ok I thing you narrowed it down to (scanner control pwb)

ok, changed out scanner control board, also changed out pcu pwb. Still no change. I have no direction or idea where to go next. ;(
ANY HELP, anybody have this problem before.?

[igi]

Re: power switch

ok now you have to take a fluke(meter)and start measuring voltages.
and resistance in the harness