Dear Mr. Ketpan,
the screen shot is RODOS and R5.
R5 will not be sensitive for ambient light.
It will be because of scratches and / or contamination.
What has it been like before you repaired the instrument ?
It has always been like that ...
You can eliminate the protection window as possible cause by removing it and look at the
signal test without. Easy and cheep to replace.
If it is inside the R5 TOPMICRON it is bad news because these things are expensive.