Subject: e-Studio 723 stacking issues
Machine says "Finishing Bin Full, Remove Paper," We
cannot find anything in user programming or 08, but
the machine only lets about 100 pages out into the top
tray (copying) before displaying this message. Thanks
I know on the MJ-1027 and MJ-1028 you can set it up
for limitless copies (since it uses stack height
instead of page count). With the copier turned off,
set the DIP switch 5 to the on position on the
controller and just leave it there. Let the customer
know that using this method the pages could stack so
high as to fall on the floor and stack unevenly. I
don't know if the MJ-1029 uses the same DIP setting,
but I would assume it does.
Yeah, the machine
does not count the pages, only looks at the stack
height. It even seemed to change when we turned off
the fluorescent lights in the shop, but then it did it
again anyway. If we put about 100 pages into the top
bin then start running copies, it will immediately say
bin full. If we remove SOME of the pages (at random,
amount doesn't seem to matter) the machine will start
printing again, so I think I've got a bad Stack Height
Turns out it was
not the stack sensor. Any other ideas?
would look at the bin motor. Sounds like the sensor is
detecting the paper height but the bin is not lowering
to allow more paper in the bin.
The bin DOES go properly up and down, upon
initialization. I've had a few of those motors go out,
but usually the machine codes out when that happens, I
I think you're
right about the bin motor error code. So that leaves
two possibilities. The board or the bin lower limit
sensor. I'm thinking the sensor may be going flaky,
telling the board the bin is at the lower limit when
it is not.
Subject: Minolta DI-2510 gray background
My customer is
getting a light gray background evenly across copies.
Even when I lighten or darken the copies, the
background stays the same. Other than the background,
the copy density and fill are good. Developer/drum was
2 rs old and at about 65% used, and the machine is
using factory toner. I replaced the drum/DV and
installed a fresh bottle of toner as a precaution. All
settings are correct and optics are spotless. Machine
worked fine for a week afterward, but then the gray
background came back again. The customer is down the
street from my office so they brought their IU to the
office and copies are fine on the warehouse machine. I
suspect the HVT may be bad or else the laser, but the
fact it worked for a week right after the drum/DV was
replaced is making me second guess myself. Before I
tear down a rental machine to get the HVT and laser
out I would appreciate some input if anyone else has
had this problem. Thanks in advance.
I don't know the model but
see if you can shut off the toner feed and make 20 or
30 copies of an original that has heavy solids to
remove some toner from the mix. If it works, then you
have one choice: replace dv and run dv settings.
If you just rebuilt the
drum unit then it could be that the top unit is not
making good contact. It's a good idea to replace the
upper half. It may work when swapping to another
machine but may not stay like that. Check the door
contacts and clean under them. I have never had to
change the HVT in this series. But anything is
Are the optics under the
glass clean? I had a tech with a copy quality similar
to this. When asked if he had cleaned the optics his
response was, "They looked clean to me." I went out
and looked at the optics, and yes, they looked clean.
I shined a light on the mirrors and then they looked
filthy. All of the dust and dirt on the mirrors caused
the white areas of the original to come out grey on
If it were dirty optics, you would think that the
machine would NOT have run fine for a week after IU
replacement. This is what confuses me, especially if
the IU works fine in another machine because that
rules out toner contamination or the IU itself. If it
were the laser unit, it's more likely that the copies
would be light, and I have never had one of these fail
without making A LOT of noise prior to giving up the
ghost. From the description, I would say that there is
something wrong with the transfer roller, door
assembly or maybe IU grounding contacts.
Clean all contact points to -include the one on the
right side door. In the transfer assembly there are
some for the transfer roller.
If the copies are scans not off the glass try users
choice #6 to adjust scan density. #4 will adjust print
Subject: Bizhub C451/C550 squeaking noise
Question: We have been getting
multiple Konica Minolta Bizhub C451 and C550
machines that have this constant squeaking
sound. This series is always turning
something/running at all times that its
predecessor did not and it seems to be related
to that. We are currently chasing this noise at
several customer sites and are not having great
luck getting the exact location nailed down.
Answer: It's the
fuser. I can send you the bulletins on this.
Some of the fusers have been modified.
Answer: It is more than likely
the fuser. Also, check the exit section that is
normally above the fuser. When the right side
door is opened it is on the door. Two screws and
the assembly comes off. At one end a screw
removes a cap. As you remove the steel rod the
pinch rollers will fall out. Clean the rod,
clean inside the rollers, and lightly lube the
rod with a dry lubricant if possible. Because of
the high heat of this fuser most high temp lubes
fail at the operating temps of the fuser. There
is also another piece to the right of the
electromagnet inside the machine. One screw and
one plug, it comes out. Again, clean and lube
this part also.
To reduce the chance of re-occurrence set your
machine to a lower sleep time interval; this
model heats up quick so when you print there is
very little delay and when the machine is
sleeping the fuser doesn't turn, thus
eliminating the noise. If the customer
complains, tell them you are helping them go
greener and also save power.
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