here you go as requested..

I thought that this was posted but did not..

you only have one power supply, I suspect the WS-CAC-2500W PS is not enough to power the additional blade you're installing, I could be wrong. For the sake of test, if blade 7 is not used, I would slightly pull blade from slot 7, and re-insert the 6148A in slot 6 to see if it comes online.

I pulled all blades out excluding the SFM2 and the X6516 but it was still unreadable. I had a 6548 and 6148a in the chassis simultaneously and they both ran fine. Also, I have only one PS in another 6500 chassis that houses several blades including two x6516 with no problem.

did you try instlling the 6148a in the other 6500 chassis? if the blade don't come up in the other 6500 then you may have a faulty card.

it works fine even in the 6509 chassis when I boot up from the linear flash card that has the code for the 6513 chassis.

Is the WS-X6816-GBIC even supported under CatOS?