Re: Kyocera 7002i thick solid black line
Replace the MC-6720.
Replace the MC-6720.
-
-
Re: Kyocera 7002i thick solid black line
Hiya everyone,
What an interesting read! I've got a TA9003i on 1.1Million prints, which has been in for about a year now.
It has just started to have this issue in the last few days, so I was sort of amazed to see that there was so much info about it collectively amongst other engineers.
It recently in the past month had a new transfer belt unit du to damage, which was installed following the tech bulletin I200_2NJ_0006_SB_rev.1 which talks about fitting mylars at front or rear of the reg to prevent the belt tracking too far.
It then about a week after had new Drum and Dev unit to cure the Vertical streaks which Kyo say is caused by a seal issue in the dev unit, drum changed due to age and thought best to fit as a pair.
Entire Reg Assy was taken out the device to vac and clean any drop of dev in and around the assy, also the paper dust cleaning rod removed to be cleaned.
My initial thoughts after seeing the inch wide black streak down the prints was a charge/voltage issue. The drum and dev was removed to clean connectors etc, and cleaned the transfer connectors. If that didn't work then I was going down the route of HVPS.
After seeing what you all have to say about it, I'm feeling like I need to add a few more parts to the order if needs be. I've jotted down everything mentioned so I will try and see what fixes it if it does indeed come back. Thanks
Black Streak - Possible Causes
302NJ94090 PARTS UNIT HIGH VOLTAGE MAIN SP
302NJ94070 PARTS PWB FRONT MONO ASSY SP
302NJ94032 PARTS CONVEYING UNIT (Z) SP
302NJ93091 DRUM DRIVE H UNIT
302LC94790 Grease Floil G-347CA (10g)
302WA93010 LK-6722Comment
-
Re: Kyocera 7002i thick solid black line
Hi All,
Just came across this thread and I've too got the same issue on a TA9003i, just over a year old with 1.1million.
Initial thought after seeing the inch wide black mark down prints was a charge/voltage problem. So I was going down the route of HVPS.
It has had a new drum/dev unit/transfer unit in the past month, so interesting to hear that this issue can occur not long after a PM kit being fitted.
I will see if it continues to happen after the clean I've just done, but I do like the idea of fitting the old style Transfer unit out of the TA8001i. I may be ordering one of those along with HVPS to see if that works.
ThanksComment
-
Re: Kyocera 7002i thick solid black line
After a Clean in and around the transfer, drum&dev area, also a clean of the terminals and re plugging the connectors on the HVPS the fault is still there.
On a 1000 page run of A3 paper it happened about 10 times.
On 500 page run on A4 it didn't happen at all.
So it's not as bad as what some of you have had, but never the less it's still not right.
I like the idea of ordering the older style Transfer Unit that goes in the TA8001i ..... But could somebody please let me know if that would indeed fit the TA9003i?
I think I'll be ordering the HVPS and perhaps even the DRUM DRIVE UNIT too just incase there is a grounding problem there.
ThanksComment
-
Comment
-
Re: Kyocera 7002i thick solid black line
I recently had experience with one of these with intermittent fuser codes, but the fault wasn't to do with the fuser at all but HV arcing to the frame from the fuser separation bias HV supply with is a separate little board way up in the top right rear corner of the device. The output wire passes really close to the frame and can arc causing intermittent issues depending on what sensitive circuitry might pickup the resultant electric noise, in my case the fuser IH control pwb shutdown/or fuser temp sensor reading input overload i never really got to the bottom of which it was.
If you're chasing gremlins in one of these large chassis BW 2-3 series, check for dust/toner buildup/signs of arcing in the fuser separation bias HV board and output wire which lives above the IH control PWB cage, and turn the output wire plug around so the wire is bent away from nearby objects and can't arc.
Additionally, in that same machine i found evidence of severe arcing behind the large HV PWB to the chassis from the anti-tracking cuts in the PWB where toner dust had been attracted to the corona in that area and built-up there until breakdown was achieved. I applied a large mylar sheet from a waste box cover, to the frame area behind the HV board, and cleaned the board of debris so discourage further arcing.
I too have a 9002i which spits out the occasional page with large black stripe mid-job. I have yet to solve it and have not been called to it in a long time due to how rarely the phenomena happens but i suspect I'll eventually have to go through it's HV areas to be cleaned.Comment
-
Comment
-
Re: Kyocera 7002i thick solid black line
The machines that we had with this problem, the transfer belt was the solution.Comment
-
Re: Kyocera 7002i thick solid black line
I have a CS 7003i machine and i spoke to a Kyocera tech person about this problem. I'm running into the same problem like yall. They told me it might be the main PWB. He suggested reseating all the connectors and DIMMs than updating the firmware. I would also be sure that the firmware is up-to-date. Also cut any wire ties that look tight going to the Main PWB and DP.Comment
-
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
-
Re: Kyocera 7002i thick solid black line
Sorry to resurrect such a old post but did any of you guys ever find a solution to this? Unless i missed a post in this 14 page saga it looks like every body has tried everything with no luck. I ran into this a few weeks ago, my machine (1.8kk) would produce the exact same thing every 30-50 pages. I did charge roller, drum, dv in that order. Always re occured. Replaced the transfer belt and could not get it to happen again in 500 pages. Thought it was fixed. Had a 2nd school (800k) with the exact same line. Called my original school back to see if it had re occured and they said it was back but just dealing with it as it was so intermittent and knew they had a replacement machine coming soon. Went to the machine and could not replicate at all but did transfer belt and followed the bulletin on shimming the belt.
Manager asked the other techs and they said do drum and belt together. Any body tried this?
The only thing that was the same on both my machines was U127 for transfer belt was not reset when the PM kit was installed and both counters were over 800k. Maybe process control cranks the voltage on a "old" belt and jacks the drum?Evil will always triumph because good is dumb.Comment
-
Re: Kyocera 7002i thick solid black line
You'll hear many different opinions on this issue, but I'm sticking with the transfer belt assembly. I have disassembled a couple of them for shits & giggles, just to see if I could identify anything out of the ordinary. I could not identify a cause.
If your belt is walking off center, that's another thing: the mylar spacers.
I don't know that the 8001 belt assembly will fit, but I would certainly give it a try.
I have another untested theory: The machine that did it the most frequently was in a room 9 ft x 5 ft. There was no door, but it got noticeable toasty in the room with the machine (sweat beading up on my forehead). Perhaps internal temperature plays a role. For a while I fought the fight: I begged them to swap this machine with another of the same model, or move it 8 ft, outside the room. They would not budge. It stays in the room, not swapping.
Ok, fine. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
Comment