This chapter explains steps you must perform before replacing a part. Topics covered in this chapter include the following:
To remove and replace replaceable parts, you need the following tools and materials:
Follow these steps to power down your system:
Note - It is no longer necessary to enter the sync command before halting the system, since this command is now part of the halt command.
The power switch is located on the rear panel of the unit.
Figure 4-1 Location of Power Switch
Find the power switch on your system unit and press the switch to the off (O) position.
Find the power switch on the monitor and press the switch to the off (O) position.
Follow these steps to disconnect the Desktop Storage Module from your system:
The following figure shows the SCSI port locations.
Figure 4-2 SCSI Port Locations
Caution -
Make sure that the power switch on your DSM is in the off (O) position and that the power cord remains plugged in to the DSM and to the power source.Follow these steps to remove the cover of the Desktop Storage Module:
Put the lock block aside.
Figure 4-3 Location of Lock Block
This action releases the latches at the sides of the cover. See the following figure.
Figure 4-4 Latch Buttons
Figure 4-5 Removing the cover of the DSM
The wrist strap is a device that provides grounding between your body and the chassis of the system unit for static electricity. Electric current and voltage do not pass through the wrist strap. Attach the wrist strap to your wrist and to the metal casing of the power supply. Parts that require the use of a wrist strap are packed with one.
Caution - If you do not wear a wrist strap, boards, cards and modules can be damaged by harmful electrical charges.
Note - The power cord must remain connected in order to provide necessary ground path for the wrist strap.
To attach the wrist strap:
Make sure the adhesive side is against your skin.
Figure 4-6 Wrist Strap
Figure 4-7 End of Wrist Strap on the Power Supply