Sun Oracle 4540 - Phaser Copystation, Service Manual, Page: 150 / 264

3-30 Sun Fire X4500/X4540 Server Service Manual • May 2010
7. Detach the ribbon cable from the front indicator board, see
FIGURE 3-14
.
If you suspect that the ribbon cable is bad, remove the old ribbon cable from the
disk drives backplane and use the new ribbon cable that comes with the new front
indicator board. Make sure you route the cable through the cable securing clips to
prevent damage to the cable. Then test the operation of the front indicator board
as described in
Section 2.1, “Powering On the Server” on page 2-2 .
FIGURE 3-14
Detaching the Ribbon Cable from the Disk Drives Backplane
8. Install the new front indicator board:
a. Align the holes in the indicator board with the two screw holes in the
inside-front of the chassis.
b. Using a No. 1 Phillips screwdriver, replace and tighten the two screws that
secure the indicator board to the chassis.
c. Connect the ribbon cable to the connector on the disk drives backplane and
to the connector on the front indicator board.
9. Replace fan module 0 and fan module 1.
10. Close the fan cover and, using a No. 1 Phillips screwdriver, tighten the two
screws on the left and right sides.
1 Detatch the ribbon cable connector from the disk drive backplane.