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Preliminary Service Tasks
Before you can perform a service procedure, you must do the following:
1.
Refer to the SMA and note down the value of the TimeOnCharge
variable. This value expresses, in seconds, the remaining charge in the
UPS battery pack. Since isolating the battery pack (see below) sets the
TimeOnCharge variable to zero, you will need to reset the variable in
the SMA after you have completed your service procedure and set the
switch back to the On position.
2.
Power down the system to Standby mode.
3.
Ensure that the battery pack is isolated (the circuit breaker switch on
the rear of the server must be in the Off position).
4.
Unplug the power lead from the mains socket.
5.
Remove the side panels (see Chapter 2, Upgrading Your System, for side
panel removal instructions).
Caution
Caution
When you have completed your service procedure, always refit the side panels
before powering the server up again. The fitted side panels are essential to an
effective cool air flow through the machine.
Antistatic Precautions
All electronic components and equipment are sensitive to static electricity.
Even small electrostatic charges can render components useless or severely
shorten their working life. You should always take preventive measures
which generally involve:
♦
a common earth point
♦
an earthed bench or bench mat
♦
an earthed wrist strap
Note
Note
An antistatic earthing stud is provided on the rear panel of the server.
The Appendix contains more details about antistatic precautions.
Equipment Required
You will need the following tools to work on the system unit:
♦
Side panel key
♦
Phillips No.2 (cross-head) screwdriver, (magnetised type will help)
♦
Flat blade screwdriver
♦
Spanner for rear port fixings
♦
Socket set with fitting for M5 head (for bus bar connections)
♦
Torque wrench set to 5 Nm (for tightening bus bar connections)
3/2
P r e l i m i n a r y S e r v i c e I n f o r m a t i o n
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