SLC 45LC0760-NR18S Safety Light Curtain Pair 145088329875 but the displays CRC Error

but the displays CRC Error - Block 11 and asks to insert system boot disk

Manufacturer Questar Electronic Design Model Number QED 220 SKU 19-62340 Ref 23-88150

Unit has all cables

Manufacturer Agilent Model Number N5181A SKU 19-18109 Ref 23-112015

SLC 45LC0760-NR18S Safety Light Curtain Pair 145088329875 but the displays CRC ErrorCondition Used Description Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. Includes Safety Light Curtain as pictured. No additional items or accessories are included. Photos are of the actual unit for sale. Inventory is on hand and ready to ship. Please feel free to message us with any