4521

[nijebitno]

Re: 4521

Hi to all,

Maybe I am little late for this tread but i just got same code C-4521. If ICP17 is open, can it be replaced while waiting for new PRCB to arrive, can it be overridden because I am in a middle of job with tight dead line . I will probably find total counter wiring problem because when I booted in service mode I noticed that my current counter in service mode is 560182 and on mechanical total counter is 560180 and error code appeared in middle of print job, not at start-up. Same day in morning after 10 days of no go with machine because error c-2711 occurred we found wire problem inside of belt on 1st transfer roller, loose connector that was broken when it was tested. After fixing that, machine started normally, color registration passed with success and we decided to put covers back. After printing 1000 copies machine stopped with C4521 code.

Any advise?

Thanks

[jma676]

Re: 4521

Hi to all,

Maybe I am little late for this tread but i just got same code C-4521. If ICP17 is open, can it be replaced while waiting for new PRCB to arrive, can it be overridden because I am in a middle of job with tight dead line . I will probably find total counter wiring problem because when I booted in service mode I noticed that my current counter in service mode is 560182 and on mechanical total counter is 560180 and error code appeared in middle of print job, not at start-up. Same day in morning after 10 days of no go with machine because error c-2711 occurred we found wire problem inside of belt on 1st transfer roller, loose connector that was broken when it was tested. After fixing that, machine started normally, color registration passed with success and we decided to put covers back. After printing 1000 copies machine stopped with C4521 code.

Any advise?

Thanks

From KM Bulletin
-------------------------------------------------------------------------------------------------


SYMPTOM

Error code C-4521 may occur when the machine is first turned on.


CAUSE

The wiring between the printer control board (PRCB) and the hardware
counters may be pinched. If the wire is shorted to ground, ICP17
on the printer control board (PRCB) will blow, resulting in the error code. If
the wire is broken internally without shorting, the machine will
function but the counter will not increment.


SOLUTION

It is recommended that all machines be inspected at setup or
the next service call to prevent future incidents. Inspect the
wiring that goes to the hardware counters. If it is damaged, repair
or replace the wiring and the printer control board, as necessary.
If the wiring is not damaged, reposition it so that it is secured in the plastic hooks behind the counters. This will
keep the wiring from being pinched when the cover is removed and reinstalled.


---------------------------------------------------------------------------------------------------

[nijebitno]

Re: 4521

Problem solved

We removed pinched wire and made it shorter, little bit of soldering solved it. We ordered PRCB but we have changed ICP17 fuse with new one, put everything back and machine is booting as new. So far 10k prints and running

So if intimidate help is needed replacing ICP17 fuse is option to consider.

Thanks to all.

Milos

[Emmanuel]

Re: 4521

Hi all,I am new on this forum. My first post.I purchas a used Konica Minolta C6501 copier from china recently that just arriva at my print shop in Liberia.At first switch on, it is showing me error code c4520. I have clean the color registration sensors, check the print control board for blown fuses. I have not replace any parts yet, because I purchase this copier myself and was present went it was tested, pack and ship. So I am thinking went this problem develop since I am the first person to switch it on after it arrive.I am a tech but on canon copier.

[jma676]

Re: 4521

Hello, C4521 or C4520, this thread talks about C4521.

Hi all,I am new on this forum. My first post.I purchas a used Konica Minolta C6501 copier from china recently that just arriva at my print shop in Liberia.At first switch on, it is showing me error code c4520. I have clean the color registration sensors, check the print control board for blown fuses. I have not replace any parts yet, because I purchase this copier myself and was present went it was tested, pack and ship. So I am thinking went this problem develop since I am the first person to switch it on after it arrive.I am a tech but on canon copier.

[Emmanuel]

Re: 4521

Hi,
I am facing C4520. But just discover that my yellow drum have a large scratch across it. Could that be the source of this error code C4520? Because I have try all the adjustments and still have this error code coming up.

[Wohn]

Re: 4521

Error 4521 on start up if you move to service mode and try gamma you get error 2840 waiting for the tech now