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mickeyc123
11-10-2019, 10:17 AM
Hello all,
i have a UTAX 5555i (its the same as a Kyocera 5501i) giving vertical black lines randomly when printing.
it has just over 1.8M on it and has recently had a new maintenance kit installed.
Pic below,
43983

Ive cleaned the contacts and tried a new charge and drum. the machine could print 200 pages without issue but then put lines on the next 10 pages then disappear again.
i suspect the high voltage power supply is causing the issue but wanted to ask in here to see if anyone one else has had a similar issue?

thanks,
mick

blackcat4866
11-10-2019, 02:41 PM
It looks like primary charge loss to me. See how the anomalous lines cross the edge voids? Not the laser. Is the interval 37.5mm? =^..^=

Ropariva
11-10-2019, 07:56 PM
Check the drum earth. Plastic tab removed before fitting?

mickeyc123
11-11-2019, 08:51 AM
It looks like primary charge loss to me. See how the anomalous lines cross the edge voids? Not the laser. Is the interval 37.5mm? =^..^=

Depending on where I measure from the lines are between 40 and 45mm apart.

mickeyc123
11-11-2019, 08:53 AM
Check the drum earth. Plastic tab removed before fitting?

Yes, tab removed from back of the drum.
Issue is random, could do 200 prints without a problem then put out 10 to 15 pages with lines.

kyogenius
11-11-2019, 09:11 AM
have had this very same problem on a 5500i .
try this and see if it will solve your problem
get into sim 100....turn AC auto adj OFF... chnge the AC BIAS to any value between 107-117 and check if it helps.One of our machines has been working fine after doing that.

copiertec
11-11-2019, 01:09 PM
We have used dialectric grease on some drum shafts to correct drum shorting issues on the old Alfard series.

JPazy
11-11-2019, 08:25 PM
I had one many moons ago having a similar problem. Would have sworn it was drum grounding or MC problem. Ended up being a problem with the DV unit. Replaced the developer unit and problem was solved.

KYO_OEM
11-13-2019, 02:47 PM
Hi,
why you don`t follow UTAX bulletin TB-57S to solve it?
You also can use KYO bulletin 2N9-00009 (F180)

JR2ALTA
11-13-2019, 03:17 PM
Hi,
why you don`t follow UTAX bulletin TB-57S to solve it?
You also can use KYO bulletin 2N9-00009 (F180)

Spot on. Great contribution.

mickeyc123
11-13-2019, 05:21 PM
Hi,
why you don`t follow UTAX bulletin TB-57S to solve it?
You also can use KYO bulletin 2N9-00009 (F180)


Wow, thanks very much for this kyo_oem!
I did not see that bulletin and it describes exactly the issue I'm having.
I'll give it a shot when I'm back in with the customer tomorrow.

Thanks again!

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