muzak@vax1.acs.udel.EDU (Stephen F Felicetti) (01/02/89)
suspected "broken" pin on the disk drive connector, which turns out to be just a polarity key (I finally removed the entire board to convince myself and, sure enough, there's a blob of solder under the connector which leads nowhere, and shows no evidence of a pin ever having been there)! Unfortunately, my 2nd drive still won't work properly -- let me rephrase that --it WORKS properly ALONE (if connected as though I had only ONE drive), but it DOES NOT WORK when connected in conjunction with the other drive. In other words, both DRIVES are fine, but the computer seems to get confused when both are connected simultaneously (yes, I DID connect the jumper indicating a two-drive system). Here's what happens --------------------> I get the workbench prompt and both drives click. I insert a disk in either drive. Nothing happens, drives continue clicking and the drive with the inserted disk doesn't recognize the disk. Then I insert a SECOND disk into the other drive. Both drive lights go on and the drives start spinning for a few seconds (one of the drive lights flashes -- the one on the drive connected to the connector in the middle of the ribbon cable, not the drive connected to the end of the cable). Both drives STOP spinning, the drives lights go out, and the workbench prompt reappears. Does anyone have ANY IDEAS as to what is happening here? I tested every wire in the ribbon cable at the connectors -- the cable's fine. I also tested the power connectors -- both drives seem to be getting the same amount of power (about 15V on each of the blue wires, and around 10V, I think, on the yellow wire) I assume there's a reason for the two reversed wires in the ribbon cable on the end connector (the one that's connected to the single drive that came with the computer). Also, if I connect a second drive EXTERNALLY, everything works fine! Thanks in advance.... -- Steve (still confused) Felicetti
Sentari@cup.portal.com (Larry Sentari Files) (01/03/89)
Steve.... You need to check the 2nd Drive and move a Jumper near the back of drive on the bottom. It's real easy to find. Just move it over one pin and you're in business! Check to make sure it works before buttoning up your Amiga. Larry