TS-816 setup

I'm having a bit of trouble geting my new 'shiny' Televideo TS-816 up and running. It hangs trying to IPL from the hard drive, and I can boot off a tape, which gets me diagnostics. The diagnostics look like this: ----------------------------------------------------------------- Self-testing in process. (TS-816/40 PROM V1.1) Hit "ESCAPE" Key to boot from Tape ? System IPL from Tape Drive in progress * TeleVideo Systems TS-816/40 Restore disk image from tape, V1.3 14 Megabyte on 1/4" tape cartridge Do you want to run disk diagnostic? ("Return" if NO, "Y" if YES) Y ** SELECT DIAGNOSTIC WINCHESTER HARD DISK ?? ** ----------------------------------------------- Type "I" to select Internal winchester hard disk Type "E" to select External winchester hard disk Type "A" to Abort the diagnostic mode I <--- Select the function above ** DIAGNOSTIC FUNCTIONS ** -------------------------- Type "R" to select Read-test Type "W" to select Write-test Type "F" to select Format disk Type "A" to reselect winchester hard disk <--- Select the function above ----------------------------------------------------------------- It would appear that it's having a problem using the internal hard drive. I don't have a spare sitting around to replace it with, and the cables look all securely fastened. Also, the drive seems to be spinning just fine, and I've cleared the two 'locks' on the bottom for it before trying to use it. Does anyone have suggestions for troubleshooing this problem? I'm knowledgable in electronics and can drag out my o'scope if I need to. Also, can I hook up a 5-1/4" MFM or RLL hard drive up to this thing? It's a TS-816/40 (I'm guessing 40MB drive), what should I look for (C/H/S) in a replacement drive? -- Pat