Interfacing an HP 9134 HDD to my HP 85

Hello, I am having trouble interfacing an HP 9134 HDD to my HP 85. I have connected other drives without difficulty such as the 9121D so I believe the computer is set up properly. I recently picked up a 9134A HD. It apparently emulates a 9895A 8" flexible drive and 3 slaves each with 1.15MB capacity. I set the HP-IB address to zero on the HD and typed MASS STORAGE is ":D700". I then typed CAT and Initialize and keep getting a "Timeout". Also if I turn the 85 on with the HD connected and running and type CAT the HD does not respond as my 9121 would without typing a mass storage is command. Can I assume the drive is bad or am I using the wrong syntax. The drive spins up nicely, and the light comes on but I get that error message and the disk access light does not come on. I hate to toss this drive into the dumpster if it is functional. Thank you for your thoughts. Bob H