Mitsubishi Electric Apricot, Руководство пользователя

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S e r v i c e I n f o r m a t i o n
4-2 OWNER’S HANDBOOK
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 minutes, the remaining charge in
the UPS battery pack.
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). Since isolating
the battery pack 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.
4. Unplug the power lead from the mains socket.
5. Remove the side panels (see Chapter 3, Upgrading Your System , for
side panel removal instructions).
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
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 dismantle the system unit:
♦
Side panel key
♦
Phillips (cross-head) screwdriver, magnetized
♦
Flat blade screwdriver
♦
Socket set with fitting for M5 head (for bus bar connections to
power supply)