Preparation; Removing The Top Access Cover; Fitting The Top Access Cover - Sun Microsystems Netra T4 AC100 Service And System Reference Manual

5.6.1

Preparation

Before proceeding to remove the top access cover, carry out the following:
1. Initiate antistatic precautions.
See Section 5.5, "Antistatic Precautions" on page 5-5.
2. If the system is running, shut it down and remove the power.
See Section 5.3.2, "Powering Off the System" on page 5-4.
Caution – Wear an antistatic wrist strap and use an ESD-protected mat when
!
handling components. When servicing or removing system unit components, attach
an ESD Strap to the wrist, then to the connection point provided on the rear of
system, and only then remove the power cord from the system unit. Following this
caution equalizes all electrical potentials with the system unit.
5.6.2

Removing the Top Access Cover

1. Carry out the appropriate steps listed in Section 5.6.1, "Preparation" on page 5-9.
2. Release the two captive Phillips screws from the rear of the access cover.
3. Push the cover away from the front of the chassis to disengage the lugs and lift it
off.
When handling the access cover, ensure that you do not damage the EMI shielding
gaskets on the underside of the cover.
5.6.3

Fitting the Top Access Cover

1. Carry out the appropriate steps listed in Section 5.6.1, "Preparation" on page 5-9 as
required.
2. With the fixing screws on the access cover towards the rear of the system chassis,
locate the lugs on the access cover in the slots on the side panels of the system
chassis (see
3. Slide the access cover forward to engage the lugs.
Ensure that the rear of the access cover is flush with the rear of the system chassis.
4. Tighten the two captive Phillips screws to secure the access cover.
).
FIGURE 5-4
Chapter 5 Before Servicing the System 5-9