NorthStar HORIZON Manual page 42

C19. Adjust the wires to form a neat bundle and then tighten the
cable ties by pulling the end of each cable tie firmly with
a pair of pliers. Snip off the excess cable tie.
C20. Insert the power indicator LED through the 1/4" front panel
hole from the front and push firmly until the bezel is flush
with the front panel. Slip the free end of the green wire
onto the motherboard quick-connect lug labeled LED and slip
the free end of the yellow wire onto the lug labeled GND.
C21. Peel the backing from the blue HORIZON nameplate and
carefully attach to the front panel centered under the power
LED so that the bottom of the nameplate is 5/S" above the
bottom edge of the front panel.
C22. Peel the backing from the serial number tag and carefully
attach to the outside of the back panel between the fuse
holder and the third disk drive cable mounting hole.
C23. Look inside the disk drive underneath the disk drive PC
board. Check that the head carriage guide is seated in
th~
spiral groove on the large black circular stepping motor
cam. Sometimes the guide is knocked out of the groove
during shipment.
C24. If your HORIZON includes exactly one disk drive, then no
disk drive modification is required. Otherwise, if your
system includes two or three disk drives, then each drive
must be configured for unit selection and cable termination.
See the DiSk Drive Configuration section for details.
C25. fold the ribbon cable as shown in figure 2C.
C26. If your HORIZON has one or two disk drives, install them as
follows: Orient the disk drive(s} so that the power
connector is up and insert through the front panel from the
front. Before sliding a drive all the way back, attach the
ribbon cable edge connector to the disk drive PC board. Now
slide the drive(s} into the chassis and screw to the disk
drive mounting bracket from the bottom of the chassis wittl
two 6-32x3/S" machine screws and lock washers. If the disk
drive mounting holes do not line up with the corresponding
holes in the disk drive mounting bracket, then loosen the
four machine scews for the disk drive mounting bracket to
adjust its position. Note: Use of a screw-holding
screwdriver will make insertion of the mounting screws much
easier. Finally, for each disk drive, plug the
corresponding disk drive power cable from the motherboard
into the power plug at the top rear of the disk drive.
C27. If your HORIZON has no disk drives, then snap the two black
plastic face plates into the disk drive mounting hole in the
fron panel. If your HORIZON has one disk drive, then snap
North Star HORIZON Computer
42