Power On Does Not Succeed - Sun Microsystems SPARCstation Voyager Service Manual

TABLE 4-1
Symptoms
System doesn't power
on
Battery needs
recharging too soon
Mouse pointer is not on
the panel display
Mouse does not work
smoothly

Power On Does Not Succeed

1. Check that the AC power cord is connected to the wall outlet and to the power
supply.
2. Verify that AC power is being supplied from the wall outlet by using a VOM.
3. Remove the power supply from the system and connect it to the wall outlet. The
LED on the power supply should light to indicate the power supply is working. If
the LED does not light, the power supply is defective.
4. If the system runs on battery, connect the external DC cable to the DC input
connector on the back panel and to the power supply. The battery may be dead or
defective.
5. If power on fails using the keyboard power-on key, press the power switch at the
rear of the system. If power on succeeds, the cable for the keyboard may be
damaged or incorrectly connected. Or, the keyboard may be defective.
6. The CPU board may have failed. See Section "System Board Test" on page 4-27.
7. The DC/DC converter may have failed. See Section "DC/DC Converter Test" on
page 4-27.
26 SPARCstation Voyager Service Manual • December 1994
Troubleshooting Tips
Corrective Actions
Do corrective actions as if your panel display
is off
Press Stop-D keys immediately after power
on to call up POST
Use the Power Manager to decrease power
usage
Make sure the mouse cable is connected
properly
Clean the mouse
References
See SPARCstation Voyager User's
Guide
See SPARCstation Voyager User's
Guide