No Video Output On The System Monitor; Power-On Does Not Succeed - Sun Microsystems SPARCstation 5 Model 110 Service Manual

TABLE 4-1
Problem
Read, write, or parity error
reported by the operating system
or applications.
Power on does not succeed. LEDs
on keyboard do not light and
there is no tone from the keyboard
when you turn on the system
power.
Power on does not succeed. The
system fails to initialize but the
LEDs on the keyboard light and
there is a tone from the keyboard.
4.1

No Video Output on the System Monitor

1. Check that the power cord is connected to the monitor and to the wall outlet.
2. Verify that the wall outlet is supplying AC power to the monitor.
Use a volt-ohmmeter (VOM).
3. Verify that the video cable connection is secure between the monitor and the
system video output port.
Use a VOM to perform the continuity test on the video cable.
If the power cord and video cable connection are good and there is still no video
output, reseat the video card for the monitor.
4. If the monitor power supply is internally fused, check the fuse.
The fuse could be blown.
4.2

Power-On Does Not Succeed

1. Turn off the system power switch.
4-2 SPARCstation 5 Model 110 Service Manual • November 1996
Troubleshooting Tips
Action
Replace the disk drive indicated by the failure message. Solaris 1.x
operating systems identify the disk drive installed in the lower bay (SCSI
target ID 3) as sd0 and the disk drive installed in the upper bay (SCSI
target ID 1) as sd1. With Solaris 2.x operating systems, the two drives are
identified as c0t3d0 and c0t1d0, respectively.
The power supply may be defective. See Section 4.2.1 "Power Supply
Test."
The system board may be defective. See Section 4.2.2 "System Board
Test."