[Electrical] TA 358ci Power surge.. now lines on prints

[bronco31]

TA 358ci, 97K count, no surge supp connected..had a AC power dip/spike in the building, ( wasn't printing or copying during surge).. it rebooted, showed no codes.. no clicks, no abnormal noises,smells, screen normal.. but now adds extra group of CMYK 1mm lines on the prints!

Reloaded latest full firmware, initialized memory via 021, reformatd HD and SSD via 024 , reloaded firmware again.... still cmyk lines on prints and copies ( scans work fine)

Will study the service manual tonight but im independent and have to do my best correctly solve/ know which board/flash/EEPROM/power supply/engine board i should replace!?

Thx for any help!

Guy


hmmm.. i cant get attachment to work to show the defective print... basically its 1mm lines of each color running front to rear on a letter size page

[KYO_OEM]

Re: TA 358ci Power surge.. now lines on prints

sample pic can be helpfull...
if possible scan in full format,
if not possible:
with or without margins against running direction?

[tmaged]

Re: TA 358ci Power surge.. now lines on prints

IMO this an insurance claim for the customer. You could spend an infinite amount of time/money swapping parts out, that may or may not permanently resolve it. It's the same as a lighting strike for me.

[blackcat4866]

Re: TA 358ci Power surge.. now lines on prints

Make sure that your attachments are < 1MB. You may have to change camera settings or crop to get a smaller file size. =^..^=

[Radiscar]

Re: TA 358ci Power surge.. now lines on prints

power off and unplug for a few hours -surge might have overcharged a capacitor or something and this might save you

[bronco31]

Re: TA 358ci Power surge.. now lines on prints

1mm banding..not random, has a pattern to it.

Kyo hotline thinks its Hi-Voltage PWB.. or Main PWB.

I think the Main pwb is big part of logic/data into dots...data crunching into laser output etc right? along with the HDD
Im told the SSD on the Main is not used for image formation.. and i did format both SSD and HDD successful.. no errors

High Voltage PWB? im not sure.. it doesnt seem to be a Bias/charge/laser/image formation issue does it?


"You could spend an infinite amount of time/money swapping parts out, that may or may not permanently resolve it" yes this i fear
MFPs are incredibly complex
Customer should buy a new machine and plug into ESP surge supp !
IMG_7023.jpg

Guy

[blackcat4866]

Re: TA 358ci Power surge.. now lines on prints

What's the interval of repeating, in millimeters please?

[subaro]

Re: TA 358ci Power surge.. now lines on prints

Did you remove the drum/dev and charge roller and looked at them ?. Try replacing one of them and see what happens.

[bronco31]

Re: TA 358ci Power surge.. now lines on prints

BC.. the distance between each color band/defect: 96.5mm... drum diameter !
but my tired brain cant come to a conclusion why or how this info helps narrow problem to the cause..

"drum/dev and charge roller and looked at them ?. Try replacing one of them and see what happens" OK will try..i just assumed no physical cause as problem occured right after power surge

[Synthohol]

Re: TA 358ci Power surge.. now lines on prints

you say it happens on copies too?
reduce the image by 50% do the lines shrink with the image? i know its not optical. just wanted to see if during image processing those lines if they were part of image processing or after processing and the printhead is just the culprit

[justanotherhack]

Re: TA 358ci Power surge.. now lines on prints

If you print 2 status pages, do the lines line up exactly on both pages, or are they shifted up or down on the page? What do you get on a b/w print (print font list).
If swapping drums around, it's vital on these units that you unplug the power first.

[blackcat4866]

Re: TA 358ci Power surge.. now lines on prints

If it's drum diameter, there is a chip in the coating of one (or more) of the drums. Take a known good DK-5195, and try it in each location, until you get images without the bands. =^..^=

[bronco31]

Re: TA 358ci Power surge.. now lines on prints

when printing 2 status pages.. defect is shifted.. BW copies get a Black defect line

you say it happens on copies too? Yes


reduce the image by 50% do the lines shrink with the image? OK Monday morning

"Take a known good DK-5195, and try it in each location, until you get images without the bands" my brain stuck on surge-ruined-a-board .. but could the drums have been physically damaged by the surge? I'll swap out ..try Monday!

Have a nice weekend all Thx for all the help

Guy

[bronco31]

Re: TA 358ci Power surge.. now lines on prints

BC again on point! and Subaro.. thanks.. yes the drums were damaged

I swapped one DK5195K drum from next room over 308ci to test..Lo and behold! black band defect front to rear is gone.

I was stuck in mindset of voltage spike doing board level/DIMM/SSD etc damage ( as firmware full version didnt fix issue) I was going ship Main PWB off to Hytec..

Clearly a print job was in progress during AC surge,

the drums were turning.. and at that moment each drum got "shocked"? somehow along that meridian from end to end..?
I cleaned drum surface/charge roller.. no change..I see no "chips" or physical marks on the glossy surface.. maybe i'll try look closer.
Ordered a set of drums $200 each.. expensive! too bad i cant rehab them somehow.. they're at half life.. 100K

so BC again on point! and Subaro.. thanks.. yes the drums were damaged. thank you for the push in the right direction by doing the repetitive defect measurement

[blackcat4866]

Re: TA 358ci Power surge.. now lines on prints

Congratulations on your success!! =^..^=