hill@kodak.UUCP (mark hilliard) (08/18/86)
Help!! I'm trying to upgrade my 7300 to a 40meg disk! the books
dont help much. What is the disk buss used? sasi scsi? What model drives
will work in the 1/2 height family? Tandon makes 2 different 755's, one
includes a controller and the other doesnt. Which one is right?
CDC has a new voice coil drive with a 28ms access time. Has anyone used it?
What about NEC's new drives, the D5146 and the D????.
Any help or info would be greatly appreciated!! Thanks in advance!
Mark Hilliard
seismo!rochester!kodak!hill
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\ gizzmo!markjrw@hropus.UUCP (Jim Webb) (08/21/86)
> Help!! I'm trying to upgrade my 7300 to a 40meg disk! the books > dont help much. What is the disk buss used? sasi scsi? It uses the ST506 disk controller. It does NOT allow more than one disk, although the controller does... > What model drives > will work in the 1/2 height family? Tandon makes 2 different 755's, one > includes a controller and the other doesnt. Which one is right? You do not need the controller, it is on the motherboard. You need one for the above controller. To install the sucker, here goes, sorry about being so verbose, but a number of people seem to be asking this question: 1) Pull the tops off of those little stubs that are supposed to hold the keyboard onto the PC. There are two screws in there that need to be unscrewed. 2) In the back, along the bottom, are three screws that also need unscrewing. 3) This being done, the entire white plastic top should lift off. I find that if you grab the front part, it will almost pivot backwards. Since the monitor is attached (and is heavy) you can set it on its back behind the now exposed PC. 4) Underneath the floppy disk drive, you will see that the video cable plugs into the mother board. Unplug it. It only goes back in one way. 5) This cable also screws into the floppy disk drive assembly. Unscrew it here as well. 6) A ribbon cable runs from the power supply to the motherboard. Wiggle it off the top. It is clearish yellow on my PC. 7) Unscrew the three screws on the front attaching the sheet metal to the frame. 7a) Behind the hard disk, pull out the two ribbon cables and the square power connector. 8) GENTLY tug the sheet metal forward. It can now swing up and rest in the little groves made "Just for this purpose" in the hinges. 9) The hard disk is attached by four tiny screws. Unscrew them and remove the disk. These are on the bottom of the drive. 10) If you buy the TM755 drive I did, the only thing different is that the power goes in from the back instead of from the top. This will cause one small problem, the aluminum (?) sheeting behind the drive will get in the way, so just cut it out, I doubt you care too much about efi. 11) Inside the old drive, there is a green piece of paper I guess used to insulate the drive from the metal it sits on. Put it in the new drive in the same place. 12) The sheet metal cover will have to be its edge clips bent a bit to fit over the TM755, as it is a bit longer than the factory drive. 13) Anyway, put the paper and cover in/over the drive and screw the four screws in. 14) Attach the ribbon cables and the power cord. 15) GENTLY pull the top down and reattach the cords you pulled off above and rescrew everything back together. 16) When putting the top back on, I found putting the back on first is easier. 17) I take NO responsibility if these directions cause any damage to your PC. Cheers.... -- Jim Webb "Out of phase--get help" ihnp4!houxm!hropus!jrw