Does anyone have any Data on a Rohm LTZ-R17 I need some it's used in a Yamaha P2250C Power Substitute?

I am in need of some LTZ-R17 LED Diodes used on the Amplifier Driver Board on a Yamaha P2250C Power Amplifier can't find any data I beleive this Diode is to indicate a fault issue
should there be a problem.

Thanks for your time and consideration