Now, let’s examine the connections to the back of the new drive. The power connection
is easy. It will only fit on in one direction. Properly installed, it will snap and slightly lock
into position. The ribbon cable is a different case. When plugging the ribbon cable, do
not use excessive force or pins can easily be bent over. Be sure all pins are aligned
with the connector before pushing the connector on. What about polarity? Notice in the
first photo. I show the ribbon connected with the red wire toward the power connector
on the drive. In this case, the connector to the main circuit board remains connected as
it was before.

Notice in this second photo that shows the drive assembly reinstalled, the red wire
on the ribbon cable is positioned away from the power connector. You may find that
connection necessary due to mechanical interlocking on the new disk drive. If so, you
will also need to reverse the connection on the PCB. Notice that normally, the red
wire on the ribbon cable was toward the front of the DSS-1. But, in this configuration,
the red wire is toward the back. Once you have the cable connected to your drive, you
can decide which connection is appropriate on the board.

One more issue is the length of the disk drive power cable. The connector on the replacement drive is on the opposite side from the original. I found it necessary to
remove the plastic cable clamp on this inside of the DSS-1 end cap to provide the
additional length needed for the power cable.

At this point, you can close the lid on your DSS-1 and give your new disk drive a trial run
before replacing all the screws. Assuming all works OK, first replace all 8 screws on
the bottom. As you insert each screw, do not tighten it completely until you have all 8
screws started. That will assist you in aligning all screws. Then, tighten all screws.

With the lid closed, replace the 2 screws on the back of your DSS-1. Then, insert all
four of the long screws in the end caps to prepare for tightening. You will find that
starting these screws requires you to pull the lid into alignment so the screws line up
with their threaded holes. Start all 4 screws before tightening the any of them. Do not
over-tighten these screws. You installed drive should look like this.