Hello, new to this forum, but not new in CNC machine maintenance.
Just finished the repair of a QT10 with T-Plus control.
The machine seems to work as expected, but I have some strange things on the screen.
The clock is gone - replaced by **.**.** **:**' **"
Under it stands MONITOR followed by ??
The same symbols appears also in the first 2 softkey labels.
When trying to set the clock, the entered date /time appears for a fraction of a second and is replaced with the ** thing.
The real time clock is not needed here, but for me it's a sign of potential trouble.
I had a quick look at the cards in the machine, but I saw no "classic" RTC chip.

Anyone has an idea?
For the complet info: the machine contains:
QX084 Power Supply
QX141 CPU
QX524 Graphics etc.
QX539 I/O

Best Regards,

Luc