Heidelberg SM74 ErrorTTK and BLT con

[junaid rafique]

Hello to every one. Hope all is fine ..
i have SM74 Cp200 machine from last couple of months i am facing strange issue. Sometime when i turn on the machine it boots up normal and all working is fine. sometime i turn on then after little inching following error appears in Dynamic test.
Dynamic test
t=0
S-TTK FFEF
S-BLT CON BFFF

then this error cant be deleted. we have too restart the mains...some time no errors come and all things working fine whole day..
we have UPS installed and stable voltages 380v-3 phase..i have checked it today but same error is there..i already service brake and main motor..Plz help what is happening with my machine.

 

[Mathew]

Hi,
What is the age of your machine?

 

[Beguin]

Test dyn
S-TTK FFEF
Brake control no possible (power transistor cannot clock ) or Bam defective

S-BLT con BFFF
MSK sends général fault message signal,press stops.

 

[CHOCK]

Execute this easy troubleshooting for electronic circuit;

1) Perform a visual inspection : look for loose and broken wires, improperly seated connectors, loose or broken wires
misset switch, missing jumpers. and so on.

Check for obviously damaged component(components burned or discolor due to overheating);
Dust + dirt + tear +wear

2) Reseating Boards and components:
Edge connectors are a common source of problems. Power down the system and remove the PC boards. Examine the edge connector
for contamination and clean with contacts cleaner contacts. Reseat any loose components such as scoketed ICs) .
Reseat theboards and power up.

3) Power supply checks:
Check the power supply for missing voltages and voltages out of spec. A digital multimieter DMM can be necessary, as
voltage specifications are quite tight: logic supplies for example: must be within + 5% percent of 5Vdc. All the
multiple supplies and all must be checked.

4) Board swapping:
Board swapping involves the substitutiono of a known godd board for a suspect one

5) look for colder+dry solder joint in the electronic board!!!!!

 

[Andranik]

Have you found a solution to your problem?
I have the same problem.

 

[Beguin]

Please could you show us the errors displayed on the lectern. Please take pictures so we can see thank you.

 

[Andranik]

Of course please

 

[Beguin]

Hi,
this is what it means.

 

[CHOCK]

Hi sir:

Here is the defective and fix it
1)S-TTK:
Check:
Defective brake control . SLT_CON

2)S-BLT_CON:
MSK sends signal failure , stops impression message.

 

[Andranik]

Where can I find that board on machine?
Machine is: SM 74-5+L 2006 year

 

[CHOCK]

in the control electronic box.

Look for his schematic electrical diagrams, the last pages

 

[Andranik]

Maybe the board is called differently?
I cannot find "STL_CON" in the diagrams.

 

[CHOCK]

As i did indicate you before
In the Last pages of schematic electrical diagram, appear of Lay out, from all electrical/electronic Board in control Board Box.

Please see carefully.

Blessing

 

[Mathew]

BLT is located inside electric cabinet on the left side. Usually there is protection cover over it.
This error is so common from that age machines. There is a small module on BLT called UVM3 and this error is related to that. I had repaired many of these modules with this error.

 

[CHOCK]

Did You see

The Common Sense, Is the most invaluable tools x Troubleshooting.

Take care and Good look.

Blessing

 

[Andranik]

Thanks for your patience and help.
Unfortunately, I did not find any broken or burnt parts on this board. I checked all the soldering. There are no cold-soldered connectors.
But just in case, I resoldered all the connectors with a soldering iron.
Let's see what happens.

 

[CHOCK]

ok.

look for dry +cold solder joints(both) attached is there

1) Perform a visual inspection : look for loose and broken wires, improperly seated connectors, loose or broken wires
misset switch, missing jumpers. and so on.
Chech for obviously damaged component(components burned or discolore due to overheating);
Dust + dirt + tear +wear

2) Reseating Boards and components:
Edge connectors are a common souorce of problems. Power down the system and remove the PC boards. Examine the edge connector
for contamination and clean with contacts cleaner contacts. Reseat any loose components such as scoketed ICs) . Reseat the
boards and power up.

3) Power supply checks:
Check the power supply for missing voltages and voltages out of spec. A digital multimieter DMM can be necessary, as
voltage specifications are quite tight: logic supplies for example: must be within + 5% percent of 5Vdc. All the
multiple supplies and all must be checked.

 

[Mathew]

Hi Andranik,
I can test BLT if you can send it to Denmark.

 

[Andranik]

Hi Mathew!
Thanks for the suggestion, but I have no other board to replace it. The shipping from our country to Denmark will take too much time for us.
The machine is working well now. Let's see what happens.
Then, if there are problems, maybe I will contact you.
Thanks again.

 

[Andranik]

Unfortunately resoldering did not help.