SRK SVT error

Hi everyone,
Need help
I have T IN CIRCLE with message error svt and srk on my heidelberg mozh
the machine turns but once stopped the t reappears

SRK 7FBO
SVT 7EFF

And somtimes
SLT_CON error

 

Hi sir:
Please see if the Voltage fluctuation is constantly in his machine at the input R-S-T or L1-L2-L3
SVT 7EFF CODE: Mean the i did mentioned before.
SRK 7FBO;
Check:
Code SBM1 or invalid SBM2
Check:
Pretrigger signal (NO GATE ) can not be generated . Pretrigger signal (NO GATE ) is generated and forwarded to SRK in REK1 by ESK and chassis .
Port 1/2 parallel can not generate the control signals for the interface ( data queues , SRM2 not entered ) .
Use the Schematic Diagram with a Good DMM(Digital multimeter)

 

Can you help me on my machine? These errors appear:

 

SLT CON error translates to incoming voltage too high (greater than +15%)

STK (memory board) error translates to failed battery

 

Another query my machine does not recognize either these cards could help me

 

What is the problem appearing on the screen?
If you recently changef these boards, please swap the EPROM's between old and new boards