Troubleshooting Procedures 4-3
4
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.
2. Check that the system power cord is properly connected to the system
rear panel power receptacle and to the wall outlet.
3. Verify with a VOM that the wall outlet is supplying AC power to
the system.
4. Turn the rear panel system power switch on and observe the keyboard.
The LEDs on the keyboard should briefly light. You should hear a tone from
the keyboard. If you have a Sun Type-5 keyboard, there is a Standby power
key which you may also press to see if the system can be powered on or not.
Only try the Standby power key if the rear switch fails to turn on the
system.
If you hear no tone or see no lights on the keyboard, the system’s power
supply may be defective. See Section 4.2.1, “Power Supply Test.”
If you hear a tone and see lights on the keyboard, but the system still fails
to initialize, see Section 4.2.2, “System Board Test.“
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