Sun Microsystems SPARCstation 20, Service Manual

Page: 91 / 266

Chapter 8 Removing and Installing Subassemblies 67
a. Align the tabs on the speaker cover with the slots in the chassis.
b. Press the speaker cover against the chassis; snap the speaker cover in place.
4. Detach the wrist strap and replace the cover.
See Chapter 7.
5. Power on the system.
See “Turning On the Power” on page 47.
Fan Assembly
The proceeding paragraphs provide instructions for removing and installing the fan
and the fan DC power harness. To remove and install the fan or the fan DC power
harness, proceed as follows.
Note –
If installed, the CD-ROM drive must be removed before the fan assembly can
be removed or installed (see “Removing a CD-ROM Drive” on page 123).
Removing the Fan
1. Remove power from the system.
See “Removing Power from the System” on page 45.
2. Remove the cover and attach a wrist strap.
See Chapter 7.
Caution –
Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing it on any surface.
3. Disconnect the fan DC power connector (
FIGURE 8-10
).
4. Detach the fan DC power cable free from beneath the metal cable restraint.
5. Remove the fan as follows:
a. Grasp the fan housing firmly.