Printronix P7005, 7010, 7015, 7205, 7210, 7215, 7220 Ultra Capacity Ribbon (90M Characters) (6 Rbn/B... "weld detected printer" Questions

...printer model p7005 ,it shows an error "wled is not decated " plz suugest how i solve it,and also tell me the name of that part, It is the weld processor PCB that detects the weld. PRINTRONIX 254476 ...