Heidelberg SM74 ErrorTTK and BLT con

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.

 

Hi,
What is the age of your machine?

 

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.

 

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!!!!!