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16-6 SPARC Enterprise M8000/M9000 Servers Service Manual • June 2010
8. Remove the CLKU to be replaced. (See FIGURE 16-3)
a. If the M9000 expansion cabinet is installed, slide the cable support bracket at
the front of the clock control unit up or down by one hole, and then use a
flathead screwdriver to remove the cable connected to the clock control unit.
(four cables from the base unit and two from the expansion unit).
b. Using a Phillips screwdriver, turn the knob screws securing the left and right
eject/lock levers 90 to 180 degrees to unlock the levers. (Turn the knob screw
while lightly pulling the lever by one hand.)
Caution – Move the cable support bracket of the crossbar unit up by one hole for
the work.
c. Unlock the eject/lock levers to pull the CLKU off the backplane.
d. While grasping the eject/lock levers, pull out the CLKU slowly from the slot.
FIGURE 16-3 Removing the CLKU (Front of the M9000 Base Cabinet)
9. Place the removed CLKU on an antistatic mat.
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