We have cleaned and reseat all pc boards. Checked all the fuses at the
front and back of the control unit but nothing changed. Any other ideas to
test?

Στις Παρ, 28 Δεκ 2018, 21:30 ο χρήστης Collins, Keith W. <
[log in to unmask]> έγραψε:

> You can generally visually look at the fuse and see if the wire has burned
> out (magnifying glass helps) or use a volt ohm meter to test,.  IF the fuse
> is bad you replace it with the same rated fuse.  Fuses may be located in a
> block of fuses, on the circuit board or in a fuse holder in a wire (usually
> a twist to open).   Fuses should be marked on the wiring diagram.   I would
> suggest a service call.
>
>
>
> *From:* JEOL-Focused Probe Users List <[log in to unmask]> *On
> Behalf Of *Ioannis Baziotis
> *Sent:* Friday, December 28, 2018 10:56 AM
> *To:* [log in to unmask]
> *Subject:* [EXTERNAL] Re: [PROBEUSERS] Re: [PROBEUSERS] URGENT HELP: JEOL
> JXA 8900 Superprobe
>
>
>
> Ok.
>
> 1) how do you check them?
>
> 2) how do you replace them?
>
>
>
> Στις Παρ, 28 Δεκ 2018, 20:37 ο χρήστης Collins, Keith W. <
> [log in to unmask]> έγραψε:
>
> Also check fuses a blown fuse to the scan coils can result in half an
> image.
>
>
>
> *From:* JEOL-Focused Probe Users List <[log in to unmask]> *On
> Behalf Of *Ioannis Baziotis
> *Sent:* Friday, December 28, 2018 9:22 AM
> *To:* [log in to unmask]
> *Subject:* [EXTERNAL] Re: [PROBEUSERS] URGENT HELP: JEOL JXA 8900
> Superprobe
>
>
>
> Great...i`ll try it. so, which PC boards you exactly mean? The one seeting
> at the front part of the control unit, or at the back, too?
>
> ----------------------------------------------------------------
> Ioannis Baziotis [log in to unmask]
> Assistant Professor of Mineralogy and Petrology
> Agricultural University of Athens
> Laboratory of Mineralogy and Geology
> Athens, 11855 Greece
> (+30)210-529-4155
> Twitter: https://twitter.com/EGU_GMPV
> Personal site: http://ibaziotis.wix.com/ioannis-baziotis
>
> ----------------------------------------------------------------
>
> *Next dream is "on-the-go" .........mid -April 2019*
>
>
>
>
>
>
>
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> Στις Παρ, 28 Δεκ 2018 στις 5:56 μ.μ., ο/η William J Mushock <
> [log in to unmask]> έγραψε:
>
> Ioannis,
>
>
>
> Turn off console power, remove the lower front cover and try re-seating
> the PC boards. Sounds like you may have developed
>
> a bad contact (oxidation) on the edge connector of one of the boards.
>
>
>
>
>
> On Fri, Dec 28, 2018 at 8:25 AM Ioannis Baziotis <[log in to unmask]>
> wrote:
>
> Dear Colleagues,
>
> I have noticed the following problem on my JEOL JXA-8900 Superprobe.
> At the lowest magnification (40X), the 30% of the screen (left part) is
> black (either under SE or BSE). Please note, that under OM (reflected
> light) the image looks perfect. Also, at higher mag the horizontal movement
> (when inspecting a sample) is like having internal reflections. The
> filament has been replaced very recently, however, i had the same problem
> still occurring since the last week with the previous filament. Also, at
> higher mag (from 950X to 1000X and 9500X to 10000X) there is a considerable
> shift on horizontal axis. I tried the objective lense aperture (X and Y)
> however, nothing changed. Any idea for the problem and how can i fix it?
>
> All the best.
>
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