Kyocera TA2553ci faint prints (all colors)

[rapo_tech]

Hello

Using OEM toners.
Problem is faint, almost like watermark prints.

All the colors are equally faint. Checked visually drums, devs and belt.. all okey.

Did emergency stop on skyshot. Print was fine on drum and on belt.

So it looks like secondary transfer is not doing its job
Cleaned the contacts under sec. transfer roll... nothing..

Where to go from this?

I will add status page and maintenance report with this post.

Maintenance report too big, so uploaded here: Upload Files Easily | Fast File Upload and Sharing Up To 10GB

[rickirobert]

Re: Kyocera TA2553ci faint prints (all colors)

you should try U24 but before U917

Hello

Using OEM toners.
Problem is faint, almost like watermark prints.

All the colors are equally faint. Checked visually drums, devs and belt.. all okey.

Did emergency stop on skyshot. Print was fine on drum and on belt.

So it looks like secondary transfer is not doing its job
Cleaned the contacts under sec. transfer roll... nothing..

Where to go from this?

I will add status page and maintenance report with this post.

Maintenance report too big, so uploaded here: Upload Files Easily | Fast File Upload and Sharing Up To 10GB

[BillyCarpenter]

Re: Kyocera TA2553ci faint prints (all colors)

I'd check the obvious first. Is there moisture in the paper? Have you tried an unopened ream of quality paper? How about printing out U089?

[PrintWhisperer]

Re: Kyocera TA2553ci faint prints (all colors)

Looks like Transfer Bias failure, replace TRANSFER HVT (not the main HVT). It is under/behind the main drive pack.

[rapo_tech]

Re: Kyocera TA2553ci faint prints (all colors)

I'd check the obvious first. Is there moisture in the paper? Have you tried an unopened ream of quality paper? How about printing out U089?

No moisture. Printer is located in school, where is good climate. U089 is same.. All colors are equally faint.
But to be sure, I will take some good quality paper with me next visit.

Looks like Transfer Bias failure, replace TRANSFER HVT (not the main HVT). It is under/behind the main drive pack.

[KYO_OEM]

Re: Kyocera TA2553ci faint prints (all colors)

i agree with Printwhisperer, mostly broken transfer HVT.
But you has to check the contact springs for 2nd transfer at first.
TR Spring.JPG
It`s a little bit tricky...
2nd TR get needed voltages via the frame from transfer belt.
Remove the transfer belt, take a look for the upper right corner from the rear metal frame without from the belt, there you`ll see 2 springs are coming out.
Check position and measure ohmic continuity to the PARTS TC TERMINAL ASSY
You also has to check conveying unit for missing grounding spring closed to the 2nd TR unit.
TC Assy.JPGPlate Earth 2nd Transfer B.JPG

[rapo_tech]

Re: Kyocera TA2553ci faint prints (all colors)

i agree with Printwhisperer, mostly broken transfer HVT.
But you has to check the contact springs for 2nd transfer at first.
[ATTACH=CONFIG]58174[/ATTACH]
It`s a little bit tricky...
2nd TR get needed voltages via the frame from transfer belt.
Remove the transfer belt, take a look for the upper right corner from the rear metal frame without from the belt, there you`ll see 2 springs are coming out.
Check position and measure ohmic continuity to the PARTS TC TERMINAL ASSY
You also has to check conveying unit for missing grounding spring closed to the 2nd TR unit.
[ATTACH=CONFIG]58173[/ATTACH][ATTACH=CONFIG]58175[/ATTACH]

Checked all the springs on conveying unit on the first visit (y)

Will check belt springs and measure continuity...

[sparkycivic]

Re: Kyocera TA2553ci faint prints (all colors)

Looks like Transfer Bias failure, replace TRANSFER HVT (not the main HVT). It is under/behind the main drive pack.

I had this once in my fleet. It was one of the pandemic-built devices where the screws on all of the boards weren't tight enough causing electrical gremlins or killing random boards.

Tighten all screws, replace the TRANSFER HVT after inspecting all of the HV tracks/paths.

[taskalfaman]

Re: Kyocera TA2553ci faint prints (all colors)

hello,

most likely try to change the toner hopper, (or check contact). this always solved my faint prints.
i never had transfer bias which was defective.

have fun

[sparkycivic]

Re: Kyocera TA2553ci faint prints (all colors)

I had another call yesterday with this issue. I worked backward from most likely to least likely cause of issue (2nd trans, trans HV pwb, HV conductors, contacts and springs, primary trans all of which had suspicious properties to them like toner buildup on HV conductor path in plastic frame...). After all that screwing around, vacuuming the developers is what finally restored the faint output! Two developers are practically new from recent service(leaks at front seals), and two colors were a little dirty with toner residue. The device was much cleaner internally than i usually encounter at routine maintenance. I guess sometimes, it doesn't need to make sense... it can be the unlikely thing anyway.

[rapo_tech]

Re: Kyocera TA2553ci faint prints (all colors)

I had another call yesterday with this issue. I worked backward from most likely to least likely cause of issue (2nd trans, trans HV pwb, HV conductors, contacts and springs, primary trans all of which had suspicious properties to them like toner buildup on HV conductor path in plastic frame...). After all that screwing around, vacuuming the developers is what finally restored the faint output! Two developers are practically new from recent service(leaks at front seals), and two colors were a little dirty with toner residue. The device was much cleaner internally than i usually encounter at routine maintenance. I guess sometimes, it doesn't need to make sense... it can be the unlikely thing anyway.

What/where did you vacuum on developers?
And did you have all the colors faint or just specific ones?

[sparkycivic]

Re: Kyocera TA2553ci faint prints (all colors)

all of my colors were faint, which is why i was chasing secondary transfer first.
I vacuumed the sleeve surface area of the developers, as well as all of the exterior surfaces per usual.
I tried to attach a pic of the sample page, but not sure if it worked... might have to edit the size and edit this comment...20230516_162732.jpg

[Ropariva]

Re: Kyocera TA2553ci faint prints (all colors)

all of my colors were faint, which is why i was chasing secondary transfer first.
I vacuumed the sleeve surface area of the developers, as well as all of the exterior surfaces per usual.
I tried to attach a pic of the sample page, but not sure if it worked... might have to edit the size and edit this comment...[ATTACH=CONFIG]58275[/ATTACH]

Pic is visible. As previously mentioned, replace the transfer HVT board. I had one similar and there was corrosion everywhere as it was close to the sea. Cleaned all contacts etc, but no good. Replaced the board. Back to normal and no issues since. Been a couple of years now.
I think the sea side living certainty had something to do with the boards demise


Sent from my iPad using Tapatalk

[rapo_tech]

Re: Kyocera TA2553ci faint prints (all colors)

i agree with Printwhisperer, mostly broken transfer HVT.
But you has to check the contact springs for 2nd transfer at first.
[ATTACH=CONFIG]58174[/ATTACH]
It`s a little bit tricky...
2nd TR get needed voltages via the frame from transfer belt.
Remove the transfer belt, take a look for the upper right corner from the rear metal frame without from the belt, there you`ll see 2 springs are coming out.
Check position and measure ohmic continuity to the PARTS TC TERMINAL ASSY
You also has to check conveying unit for missing grounding spring closed to the 2nd TR unit.
[ATTACH=CONFIG]58173[/ATTACH][ATTACH=CONFIG]58175[/ATTACH]

Sooo had some fun yesterday and replaced transfer HVT board. Did not help...

Also measured contiunity from here belt_spring.jpg

to here HVT.jpg

Were those the right contacts?

[rapo_tech]

Re: Kyocera TA2553ci faint prints (all colors)

I had another call yesterday with this issue. I worked backward from most likely to least likely cause of issue (2nd trans, trans HV pwb, HV conductors, contacts and springs, primary trans all of which had suspicious properties to them like toner buildup on HV conductor path in plastic frame...). After all that screwing around, vacuuming the developers is what finally restored the faint output! Two developers are practically new from recent service(leaks at front seals), and two colors were a little dirty with toner residue. The device was much cleaner internally than i usually encounter at routine maintenance. I guess sometimes, it doesn't need to make sense... it can be the unlikely thing anyway.

Is there any chance you looked print on drum and belt (emergency stop)? Was it good?

Because i have good print on belt but does not transfer to paper...

I assume if theres problem with devs then there would not be good print on drums or belt...