Visual Inspection; Performing An External Visual Inspection; Performing An Internal Visual Inspection - Sun Microsystems Ultra 20 M2 Service Manual

If you are not able to resolve the problem, contact Sun technical support. Support
numbers and web sites are listed in
page
3.2

Visual Inspection

Improperly set controls and loose or improperly connected cables are common
causes of problems with hardware components. When investigating a system
problem, first check all external switches, controls, and cable connections.
If an external visual inspection does not resolve your problem, visually inspect the
system's interior hardware for problems such as a loose card, cable connector, or
mounting screw.
3.2.1

Performing an External Visual Inspection

1. Turn off the system and any attached peripherals (if applicable).
2. Verify that all power cables are properly connected to the system, the monitor, and
peripherals, and check their power sources.
3. Inspect connections to any attached devices, including network cables, keyboard,
monitor, and mouse.
3.2.2

Performing an Internal Visual Inspection

1. Shut down the operating system, if necessary, and turn off the platform power on
the front of the workstation.
2. Turn off the AC power on the back of the workstation.
3. Turn off any attached peripherals, but do not disconnect the power cables.
4. Remove the left side access panel, following the procedures in
"Opening the Workstation" on page
Caution – Some components, such as the heatsink, can become extremely hot
during system operations. Allow these components to cool before handling them.
3-2 Sun Ultra 20 M2 Workstation Service Manual • January 2007
3-8.
Section 3.4, "Obtaining Technical Assistance" on
5-2.
Section 5.2,