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hugohug
10-12-2016, 07:49 AM
hello ,

the machine takes a long time to start

then after it starts i get this error c-6756

i choose continue to ignore the error it says that the original scan function will be deactivated

so i have to switch off and on the sub-power

when i switch it on nothing happens just black screen ... it seems that error can't be ignored

- i isolated the scan in service mode the machine freezes at first start

- i noticed that i couldn't hear any sound of the motors moving that i hear normally when i start it nothing moves at all ,


have you ever experienced this error ?

this is what i found in service manual :

C6757: CCD power-supply voltage malfunction

Description: Power is not supplied to CCD after the lapse of a given period of time after the main power switch or power key is turned ON or the machine recovers from the sleep mode

Check:
• CCD board (CCDB)
• Scanner drive board (SCDB)
• DC power supply (DCPU)


i appreciate any suggestion on this ,

thank you very much

copier tech
10-12-2016, 07:56 AM
There was a tech bulletin regarding trapped wires in the scanner unit, around the CCD area, the metal cable clamp was too tight. You might ant to check that.

hugohug
10-12-2016, 08:11 AM
There was a tech bulletin regarding trapped wires in the scanner unit, around the CCD area, the metal cable clamp was too tight. You might ant to check that.


thank you for replying i will take a look to that

do you think that could prevent all the motors from starting ?

hugohug
10-12-2016, 03:45 PM
There was a tech bulletin regarding trapped wires in the scanner unit, around the CCD area, the metal cable clamp was too tight. You might ant to check that.


i checked it and it seemed normal no trapped wires

thank you very much for your advice,


what i will do next is to remove the CCD board (CCDB), Scanner drive board (SCDB) and DC power supply (DCPU) from an other machine and try them on this one , hope i will find the faulty board

hugohug
10-14-2016, 11:15 AM
i checked it and it seemed normal no trapped wires

thank you very much for your advice,


what i will do next is to remove the CCD board (CCDB), Scanner drive board (SCDB) and DC power supply (DCPU) from an other machine and try them on this one , hope i will find the faulty board




hello ,

update :

i checked all the wires and changed all the boards and still the same error c-6756 ,


i noticed after switching on the power button the printer doesn't make the smallest sound just scary silence

NO fan is turning and NO motor is moving !

have anybody ever experienced that or have any idea how to solve it ?

any suggestions are very much appreciated , thank you

EarthKmTech
10-14-2016, 12:46 PM
hello ,

update :

i checked all the wires and changed all the boards and still the same error c-6756 ,


i noticed after switching on the power button the printer doesn't make the smallest sound just scary silence

NO fan is turning and NO motor is moving !

have anybody ever experienced that or have any idea how to solve it ?

any suggestions are very much appreciated , thank you

I'd be pulling out the volt meter at this point and checking all outputs from the dc power supply are actually present. 5v rail to mfp board is all thats needed for mfp board and panel to start in deathly silence.

hugohug
10-18-2016, 05:05 PM
I'd be pulling out the volt meter at this point and checking all outputs from the dc power supply are actually present. 5v rail to mfp board is all thats needed for mfp board and panel to start in deathly silence.


hello,

thank you for your suggestion , i said that i changed the power supply board with other one from other machine so the problem is not in the board itself , so you are saying that the wires relating DC power supply board with the other boards maybe faulty ?

i tried to follow every rail to its destination in the machine and in the wiring diagram but i just could to test one or two rails !
34474

for example 17 2-Q , 14 24-I , 15 24-L how can i find this in the other board and what board ?

thank you for any suggestions or advices

habik
10-18-2016, 11:04 PM
hello,

thank you for your suggestion , i said that i changed the power supply board with other one from other machine so the problem is not in the board itself , so you are saying that the wires relating DC power supply board with the other boards maybe faulty ?

i tried to follow every rail to its destination in the machine and in the wiring diagram but i just could to test one or two rails !
34474

for example 17 2-Q , 14 24-I , 15 24-L how can i find this in the other board and what board ?

thank you for any suggestions or advices

Have you tried replacing or bypassing the CIS and CCD cable?

What voltage are you getting from power supply:

When all connected and which pin what voltage:
CN-004
1
2
3
4
5
6
7

CN-005
1
2
3
4
5
6
7

CN-006
1
2
3
4
5
6
7
8

CN-007
1
2
3
4
5
6

CN-008
1
2
3
4
5
6
7
8
9

CN-009
1
2
3
4
5
6
7
8
9
10
11
12

CN-010
1
2
3
4
5
6

mx6turbo89
10-19-2016, 02:02 AM
Here's another thing to try that might help:

Error
Abort code CF907 and/or error code C6756.

Failed ErP board (PWB-DC assembly).
Check CN2 on ERPB for proper connection. Check CN2-1 and CN2-2 for 5V DC then check CN2-3 (Power monitor in) and CN2-4 (Power monitor out). If all voltages are present, replace the ERPB (p/n A161H00C02).

hugohug
10-21-2016, 09:46 AM
Have you tried replacing or bypassing the CIS and CCD cable?

What voltage are you getting from power supply:

When all connected and which pin what voltage:
CN-004
...


thank you for replying

i will bring the machine to our workshop test all this


Here's another thing to try that might help:

Error
Abort code CF907 and/or error code C6756.

Failed ErP board (PWB-DC assembly).
Check CN2 on ERPB for proper connection. Check CN2-1 and CN2-2 for 5V DC then check CN2-3 (Power monitor in) and CN2-4 (Power monitor out). If all voltages are present, replace the ERPB (p/n A161H00C02).

thank you
i replaced ERPB same problem

i will test the voltage when i bring it to the workshop

Trigger
10-21-2016, 04:42 PM
Id take this back to basics.... try a trouble reset function to see if the display will come to life and if it does UNSET the scanner again. First rule is if it was working before you changed something then you caused the fault.
If the machine does not boot i advise going through the troubleshooting guide for the no boot SSD problems TNEU1400013EN. It also notes in here a C-6756 code issue, which states to do a system error clear.

hugohug
10-25-2016, 03:29 PM
Have you tried replacing or bypassing the CIS and CCD cable?

What voltage are you getting from power supply:

When all connected and which pin what voltage:

...


the only one that i get voltage from is CN006

CN006
2-3-4 GRD
5 5V
6 5V
7 5V

i did the same test on other printer the seame result came out that the CN006 is only one that i get voltage from


did i miss something or is there an other way to test other pins

thank you very much

hugohug
10-27-2016, 10:09 AM
hello ,

update :

i replaced the mfp board and the ssd board from an other machine and the machine started with fans and motors and everything

so i assumed that i have to change the MFP board for this machine

then i put its old MFPB back and weirdly starts (motors & fans were not making any sound at first )

now the machine starts but i get this error and i'm not able to remove it : C- E301

anybody have any idea about this C- E301 ?

thank you

tech51
10-27-2016, 06:34 PM
In my experience e301 has always been a corrupt print job. Is it connected to a network?

habik
10-27-2016, 11:09 PM
hello ,

update :

i replaced the mfp board and the ssd board from an other machine and the machine started with fans and motors and everything

so i assumed that i have to change the MFP board for this machine

then i put its old MFPB back and weirdly starts (motors & fans were not making any sound at first )

now the machine starts but i get this error and i'm not able to remove it : C- E301

anybody have any idea about this C- E301 ?

thank you


What firmware have you flashed it with?
What machine and type have you set when you were replacing the MFPB? and what have you got now during FW loading procedure?

blackcat4866
10-27-2016, 11:26 PM
With most machines now, but especially Konica Minolta products, it doesn't work to swap around boards. Replacement boards (like those from the manufacturer or Hytec) are initialized, and ready to accept data from the other boards within your machine. When you follow the procedure in the manual to install a replacement board it retrieves data from other sources (SSD, MFPB, and print controller) to "marry" the replacement board to the machine. Once "married" it will not work in any other machine, unless initialized and replacement procedure is followed again.

Swapping minor boards like a paper size PWB will still work, but major boards will not. In many cases I've seen machines made unfixable by swapping multiple boards. You can discard this technique of troubleshooting on machines manufactured any time after, say year 2000.

=^..^=

allan
10-31-2016, 08:29 AM
My luck...

Got the same problem.
The trouble code history will show C-F907. The code appearing on the screen is secondary.
C-F907 is an abort code relating to SIO Relieving port...DF
In short the MFPB is #$%^.

But why what toasted it?? The DF or dual scan ??

allan
10-31-2016, 08:33 PM
oops...

SIO Receiving port

hugohug
11-02-2016, 01:28 PM
Update solved


In my experience e301 has always been a corrupt print job. Is it connected to a network?

no it wasn't connected to network


What firmware have you flashed it with?
What machine and type have you set when you were replacing the MFPB? and what have you got now during FW loading procedure?

the firmware i flashed : A5C10Y0-F000-G20-J9
during the FW update it went normale selecting the firmware and install


My luck...

Got the same problem.
The trouble code history will show C-F907. The code appearing on the screen is secondary.
C-F907 is an abort code relating to SIO Relieving port...DF
In short the MFPB is #$%^.

But why what toasted it?? The DF or dual scan ??

that's what i was going to do change the MFPB !

then i found in my archive MFPB Reset Tool i rest it and it worked fine and the error gone

now the printer is working fine BUT from Code C-6756 and the printer just displays the error and the motors doesn't start > to error C- E301 > to working fine i couldn't think of any source of the problem other than detaching the wires and put them back helped to start the motors maybe !

TO

tech51
(http://www.copytechnet.com/forums/members/tech51.html) habik
(http://www.copytechnet.com/forums/members/habik.html) blackcat4866
(http://www.copytechnet.com/forums/members/blackcat4866.html) allan
(http://www.copytechnet.com/forums/members/allan.html) Trigger
(http://www.copytechnet.com/forums/members/trigger.html) mx6turbo89
(http://www.copytechnet.com/forums/members/mx6turbo89.html) EarthKmTech
(http://www.copytechnet.com/forums/members/earthkmtech.html) copier tech (http://www.copytechnet.com/forums/members/copier-tech.html)

thank you all for your replays and suggestions



(http://www.copytechnet.com/forums/members/mx6turbo89.html)





(http://www.copytechnet.com/forums/members/blackcat4866.html)

habik
11-03-2016, 06:51 AM
Just to clarify. Do you have a printout or know the version of firmware prior to loading the G20-J9?
There were some issues with J-series of firmware btw.
Also, if there was previously G00-xx firmware and you have jumped over the version up firmware (G20-A9) there might be your problem.

Byting on bits.

allan
11-03-2016, 06:51 PM
So you are saying only a board reset will fix the problem if i keep the firmware where its at?

blackcat4866
11-03-2016, 10:58 PM
So you are saying only a board reset will fix the problem if i keep the firmware where its at?

I'm sure that's not accurate allan. Part of the MFP board reset procedure is to reload the firmware. It can't be skipped.=^..^=

allan
11-04-2016, 02:59 AM
Ok :o.
Never done it before not a big board changer:p.
Makes sense a i would be wiping it.
I will then use 00-A9 to start with.

The board has been ordered so i am going to give the reset tool a try anyway.

hugohug
11-04-2016, 11:20 AM
So you are saying only a board reset will fix the problem if i keep the firmware where its at?

yes i kept the same FW only a board reset

blackcat4866
11-05-2016, 03:38 AM
Ok :o.
Never done it before not a big board changer:p.
Makes sense a i would be wiping it.
I will then use 00-A9 to start with.

The board has been ordered so i am going to give the reset tool a try anyway.

This might help:

allan
11-07-2016, 04:10 PM
Darn no luck...

Tools works just fine but the board seems to be the cause.

Anybody with the B range and the C754 tool?

Will replace the board tomorrow.

habik
11-07-2016, 06:39 PM
Darn no luck...

Tools works just fine but the board seems to be the cause.

Anybody with the B range and the C754 tool?

Will replace the board tomorrow.

Sorry for my blond moment. What do mean by B-range?! GB4-A9 you mean?


Sent from my iDon't believe in marketing device using Tapatalk

allan
11-07-2016, 09:04 PM
What i meant was B/W's.

A61FFW
A55VFW

My bad they are both for B/W.

Synthohol
11-07-2016, 11:46 PM
allan, do you need firmware?

mx6turbo89
11-08-2016, 01:39 AM
Darn no luck...

Tools works just fine but the board seems to be the cause.

Anybody with the B range and the C754 tool?

Will replace the board tomorrow.

Here's the C754 Tool: https://www.dropbox.com/s/jh313uwow7k2aow/A145FW.TAR?dl=0

allan
11-08-2016, 02:53 AM
allan, do you need firmware?

Thanks. I have the firmware.

allan
11-08-2016, 07:58 AM
Its Alive:)

Needed one more restart its working!!

One of the breads here decided its a good idea to strip of the CCD chip ....

allan
12-14-2016, 08:47 AM
Its back.

The reset works to clears the problem but its back....

I did replace the MFPB then its worked fine for a while...

Where could this problem hide.
I know its not the PSU or the dual scan bord or the MFPB.

Time will fix it but its frustrating to wait a week for a result every time i make a change.
It even happen if the machine just sits and do nothing.


Any body got the fix for this?

allan
12-15-2016, 06:36 AM
Found the SSD trouble shooting guide.
Seems like the SSD is the guilty one.

Can i swop the SSD from a C284e to the C454e and then use the Reset tool?

Synthohol
12-15-2016, 02:09 PM
If you want to roll the dice on that I'd change the machine type on the ssd first then install on other machine and wipe it.

There was some bulletin about "temporarily" testing an ssd in another machine but the machine type programmed must be the same.

Hell I'd risk it. My motto is "drive fast and take chances"

Good luck.

allan
02-07-2017, 06:38 PM
So i changed the SSD with a new one and did the Firmware.
Worked for a day and then....
Its back again.

Have now changed every thing except the OACB.
including all relevant and irrelevant parts. Power supply, CCD, dual scan board...

Why after a board reset it works for a while.
Changed MFPB and it woks for a while.
Same with the SSD format and replacement works for a while.

Why can't i disable the scanner when it asks if it wants to continue operation.
Press on continue operation then it asks to switch the soft power on and off. It will switch off but not back on again...

Thinking the factory data is truly corrupt and i cant get it overwritten???

allan
02-16-2017, 05:31 PM
...It was the CCD data transfer cable...


:eek::rolleyes:

allan
02-28-2017, 07:08 PM
I will just continue with this monologue.
Worked for 8 days....
chewing on my socks!

I refuse to give up bu it seems there is nothing left to do???

ttdsp
04-11-2019, 01:03 PM
Here's the C754 Tool: Dropbox - A145FW.TAR (https://www.dropbox.com/s/jh313uwow7k2aow/A145FW.TAR?dl=0)

hi

can you please provide the a61ffw.tar

thank you

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