4-1
C H A P T E R
4
Troubleshooting Procedures
This chapter describes how to troubleshoot possible problems and includes the
corrective actions you can take.
■
“Power-On Failure” on page 1
■
“Video Output Failure” on page 2
■
“Disk or CD-ROM Drive Failure” on page 2
■
“Power Supply Test” on page 4
■
“DSIMM Failure” on page 7
■
“OpenBoot PROM On-Board Diagnostics” on page 8
4.1
Power-On Failure
The following provides examples of power-on failure symptoms and suggested
actions.
SYMPTOM
The system unit does not power up when the keyboard power switch is pressed.
ACTION
Check the AC power cord. Ensure that the AC power cord is properly connected to
the system unit and to the wall receptacle. Verify that the wall receptacle is
supplying AC power to the system.
Press the power switch at the rear of the system unit. If the system powers on, the
keyboard may be defective or the system unit is unable to accept the keyboard
power-on signal. Power off the system unit and press the keyboard power-on switch
again. If the system unit powers on, no further action is required. If the system unit
does not power on, the keyboard may be defective. Connect a spare Sun type-5
keyboard to the system unit and press the
power-on
key.
Summary of Contents for Ultra 1 Series
Page 8: ...viii Ultra 1 Creator Series Service Manual August 1996...
Page 21: ...Preface xxi Email smcc docs sun com Fax SMCC Document Feedback 1 415 786 6443...
Page 22: ...xxii Ultra 1 Creator Series Service Manual August 1996...
Page 34: ...2 4 Ultra 1 Creator Series Service Manual August 1996...
Page 70: ...6 4 Ultra 1 Creator Series Service Manual August 1996...
Page 110: ...8 36 Ultra 1 Creator Series Service Manual August 1996...
Page 126: ...9 16 Ultra 1 Creator Series Service Manual August 1996...
Page 158: ...10 32 Ultra 1 Creator Series Service Manual August 1996...
Page 164: ...A 4 Ultra 1 Creator Series Service Manual August 1996...
Page 186: ...B 22 Ultra 1 Creator Series Service Manual August 1996...
Page 208: ...C 22 Ultra 1 Creator Series Service Manual August 1996...
Page 212: ...Glossary 4 Ultra 1 Creator Series Service Manual August 1996...