Heidelberg SM72 REK1/2 Error

[hitenb]

Hi Everyone!

I have an electronic problem with one of my presses, the SM72.

The machine will not inch or crawl.

I had an engineer briefly look at the machine who said there is an error with the REK 1/2 boards.

When the press is switched on it shows '0000' init error on start up beside each board name.

The boards are currently with a non-print specialised electronic engineering coma only who stated that it is a memory related problem on the board.

Any suggestions - what should I be checking/looking at? Are the REK boards the same on a MOF press - interchangeable?

Thanks, your suggestions and help is appreciated.

 

[NimeshSilva]

Do you mean,
REK 1 0000
REK 2 0000 ?

Is the 0000 blinking?
But normally 0000 and FFFF means no error.

 

[hitenb]

Do you mean,
REK 1 0000
REK 2 0000 ?

Is the 0000 blinking?
But normally 0000 and FFFF means no error.

Nimesh,

Thanks for responding to the thread.

The 0000 was blinking on start-up of the press on the console.

The machine will not do anything.

Hiten.

 

[NimeshSilva]

Did you check the dyn test?
Are you sure there is no error in dyn test?

 

[hitenb]

Nimesh,

I have no idea on how to run the dyn test, would you be able to guide me?

Thanks,

Hiten

 

[NimeshSilva]

Press the button with a big "T" surrounded by a circular arrow.
That's the dyn test

 

[hitenb]

Nimesh,

There were two option on the service menu and the one with the T and round arrow was pushed, the error with 0000 was still blinking. REK1, when the REK 1 board was moved and put into REK2 slot the blinking error moved to REK2 slot.

Hope I am making sense!

 

[NimeshSilva]

Your answer does make sense,
But to confirm can you take photos of the initial test and dyn test?
Then it'll be easier for me to understand the situation.

 

[NimeshSilva]

Dear Hiten,

I Just checked out the error, and I'm sorry to say that, your REK has a serious error. either its CPU is not functioning or one or more of the 8255 (71055) ICs (4 of them in the board) are gone. or maybe the some other IC is gone. you have to have very high skills to find the error and repair it. Or the best thing is to exchange it with a new card. (I know its very expensive) but you have no choice.

if you have a CPC, or other machine with the same version of REK, then you can try swapping them. but make sure to have the same RGP (REK without the EPM) version (Check the white sticker stuck on an edge of the board) and the EPM module (EEPROM card mounted on the REK board) should move from the defective card to the replacing card.

maybe the error in the EPM module itself (might burn a EPROM). if that's the case, you will get the same error after you;ve replaced the board. then you will have to purchase an EPM module.

hope this helps.

 

[hitenb]

Hi Nimesh,

Thanks for your post once again.

A day ago I sent across the REK1 board to a company here that is able to repair complicated boards.

They called me back and said that the memory (EPROM?) has been wiped clean. They then requested me to send a second board that has the same or similar spec to REK1, I sent them REK2. They took the board and called me to say that they are able to repair it. The guy working for the company said that he is copying over the information from REK2 to REK1 and replacing one more part that they are waiting for. I can only hope that they have restored the board and it will work, or for me it would have been a poor decision to have opted to repair rather than replace the board. I am sending across the pics from the error in another post, hopefully I'll be able to upload the pics without too much hassle.

Shall keep you updated.

Thanks once again.

Hiten

 

[hitenb]

This is the picture taken by an engineer who came to have a look at it, I noticed that it is not on the 'dyn test'

 

[Waqas_zahid]

Hello hitenb,

Nimesh is right your REK1 has serious errors on it, I am not sure if sending out the REK2 was a good idea since these are two different cards and stuff cannot be just simply copied over from REK2 to REK1. Anyway your safest bet is to replace the REK1 complete as the error indicates there might be multiple problems with the board, also if I were in your position I would have checked the backplane (RER i think) as well, this many errors on the REK1 makes me think twice before concluding. You can try turning on the machine without the REK1 but make sure when you do that REK2 IS INSTALLED.

 

[NimeshSilva]

Dear hiten,
Were you be able to repair the REK?. I too suspect the EPM.
Copying from REK2 should work in theory, because they have the same software version.
I hope your engineers have the skills to carry out the repair.

Wish you luck.

Nimesh.

 

[hitenb]

Hi Nimesh/Waqas,

I got the both REK 1 and REK 2 boards back from the engineers today.

Installed both the boards and turned on the machine, and guess what....

It worked! The press was back to normal with nothing abnormal. The sheet count was the same as it was before as well as the speed the machine was left running at.

A credit to the engineers who repaired the board.

You had diagnosed properly, the engineer that repaired the board said that he had to replace one of the integrated circuits, and copy over the information from REK 2 to REK 1. I think he also mentioned the EPROM, just as you did.

If these engineers were not available I would have had no choice, but to replace. So if anyone else comes across this problem, I hope this thread would be of help.

Thanks for your contribution!

Hiten.

 

[NimeshSilva]

Glad you got repaired the REK.
please extend my compliments to your engineer.

Good luck

 

[hitenb]

Oh dear... another power voltage fluctuation and a few more cards gone.

So followed the same process and found that there will still some issues with the REK 1 card.

I then looked at our other machines and found that the MOZ had the same cards REK 1 & REK 2 as the SM72.

I checked the RGP on the cards and it was the same.

So what I did was swapped over the EPROMS on the cards from the SM72 to the MOZ, put them on the SM72 - no change.

Decided to put the cards back into their respective machines and it seems that the MOZ won't do anything now. The machine will just hang at the boot up sign.

Any help, suggestions would be appreciated. I now have a serious problem on my hands.

Thanks,

Hiten.

 

[Mathew]

Check the EPM modules, probably you had mixed them together.
Check also if you had inserted the board correctly.

Good luck