Stahl Folder Ti52 - Error 18

Hi collegues,
I work with PCB repair mainly Heidelberg Postpress, the Ti52 after some years normally presents the ERROR 18 and the owner needs to change the main board, SGM-3, I and other colleagues from other companies have been investigating the cause of this problem but nobody had success, we checked all components and was not find any damaged component.
I'd like to know if someone had information about this hardware error... at the same I am ready to help collegues with issues about Postpress PCB repair..

 

Hi sir;

Normally in Stahl TI52 Present error:

In the Services menu, press the F2 function button. The Mainten./Error log menu appears.

Open the error Log.

Let me know, if this fix it

 

Hi Chock,

Probably you are referring to new version similar to MCT... this error occurs in old version, that one with 7 segments display

 

Blessing
Details for Display with Seven segments display is attached

 

Hi Chock,

Sorry for the late answer, I was not at the Lab, I was in the costumer testing a board. Tomorrow I will send a copy of technical description about the problem which explains about the missing 24V in relay K1 on the board.

Regards

Toshiro

 

Hi Chock,

The error message in the technical description is:

According to the description is caused by signal check-back from K2, it means missing 24V or wrong configuration in service mode.
The configuration is ok and the missing 24V is not because the relay is not actuated, there is a kind of watchdog circuit that monitors other circuits from the board and in case of failure will not allow the release of 24V, will not active the relay K2. The challenge is to discover which components in the board would be responsible for this failure.



Regards

Toshiro

 

ok Toshiro , where is the schematic appearing the coil for K2??
Since you must know, some device like limit switch, or button can be interrupted the
coil for K2, and by that reason does Not goes ON.

 

Unfortunately, there is no schematic for the board, this relay is on the board, but when I in Heidelberg I saw this error many times and the machine only come back to run when you change the board, I and other colleagues from other companies that work with PCB repair still didn't find the cause in the board, I don't believe is damaged component, I guess can be project error because after some years all boards presents this error and is necessary to replace the board

regards

Toshiro