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Chapter 16 Clock Control Unit Replacement 16-7
10. Mount the replacement CLKU by following the removal instructions in Step 8 in
reverse order. Align the CLKU with the slot guides, insert it carefully, and secure it
firmly.
Push the eject/lock levers as far as they will go, and then push the knob screws on the
right and left eject/lock levers to lock them in position. If the knob screws remain in
position, the clock control unit is securely mounted.
Note – Use a torque screwdriver to secure the clock cable connector with the torque of
0.2N•m (2.0kgf•cm).
Caution – If you are unable to obtain a torque screwdriver, finger tighten the clock cable
connectors. Do not secure them with a regular screwdriver.
Caution – Do not forcibly push the CLKU when inserting it, even if it is not moving
smoothly. You may fail to insert the CLKU due to the presence of any obstruction in a slot or
any problem with a connector pin; and if you forcibly insert it, serious damage may result.
11. Switch on all main line switches for the AC section (ACS) in the power supply
system.
12. Confirm that the XSCF STANDBY LED (green) on the operator panel remains lit.
If it is blinking, wait until it remains lit.
13. Use one of the following methods to start (power on) all domains at once.
■ Press and hold down (for less than four seconds) the POWER switch on the operator
panel.
■ From a console that is connected to XSCF, execute the poweron -a command of
XSCF.
The power to all the domains is turned on, and then the power-on self test (POST) is
executed. When ok prompt displayed on the console of relevant domain, POST is
completed.
For details of the power-on operation, see Section 4.4.2, “Powering the Server On” on
page 4-22, and the SPARC Enterprise M3000/M4000/M5000/M8000/M9000 Servers XSCF
User’s Guide.