Kobelco sk60 mark 3 start-stop issue.

Hello guys. I am new too this forum.
I have a 1993 kobelco sk60 with some weird issues.
It all started one day that it wouldnt turn of when i switched off the ignition, that was about 6 month ago . Today it wouldnt start when switching on ignition, so i have to jump start it on the starter motor. All fuses are ok. It also shows fault code 1, i dont know what that is ?
Is this a common fault that you guys have any suggestion for. ?

No suggestions ?

The no shut down issue could be caused by a couple of things. The alternator tells the machine when it's running, if the alternator fails to send the signal the machine can continue to run with the switch off. The no start condition can be caused by the same thing. It could also be as simple as a failing key switch. Could you send a picture of the code

It only comes up a wrench check 1 on the cluster. Thanks, i will check the dynamo rpm signal. About stepper motor, can that cause these problems or is it only shutdown issues it can cause ?