Video Output Failure; Frame Buffer Power Management - Sun Microsystems Sun Blade 1000 Service Manual

TABLE 4-1
LED Activity
LED on
The logo LED light indicates only that power is supplied to the workstation.
4.3

Video Output Failure

Symptom
No video at the workstation monitor.
Action
Ensure that the power cord is connected to the monitor and to the wall receptacle.
Verify that the wall receptacle is supplying AC power to the monitor.
Check the video cable connection between the monitor and the workstation
graphics card output port.
Check that each CPU module is properly seated. If the AC connection to the
monitor is correct, and the video cable is correctly connected, and each CPU
module is properly seated, the workstation monitor or the workstation graphics
card may be defective. Replace the monitor or the graphics card.
4.4

Frame Buffer Power Management

Symptom
When a Sun Blade 1000 or Sun Blade 2000 workstation is configured with a CD-
ROM or DVD-ROM drive, and the monitor and frame buffers are powered off
and are in energy saving mode, the workstation could hang during a panic and
the core dump would not be saved.
Power-Indicator LED States
Meaning
Full power is on in one or more internal subsystems,
and system self test has completed successfully.
Chapter 4 Troubleshooting Procedures 4-3