No Video Output On The System Monitor - Sun Microsystems SPARCstation 4 110 Service Manual

TABLE 4-1
Problem
Slow disk drive response.
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 SPARCstation 4 Model 110 Service Manual • July 1996
Troubleshooting Tips
Action
If many SCSI devices are connected to the same SCSI bus and if some of
these devices are "fast SCSI" devices, you can install an FSBE/S SBus card
to the "fast SCSI" devices to speed up performance.
Verify that the cable connections to the disk drive are fully seated. Replace
the disk drive indicated by the failure message. Solaris 1.x operating
systems identify the internal disk drive (SCSI target ID 3) as sd0. With
Solaris 2.x operating systems, the drive is identified as c0t3d0.
The power supply may be defective. See Section 4.2.1 "Power Supply Test"
on page 4-3.
The system board may be defective. See Section 4.2.2 "System Board Test"
on page 4-5.