4-4
Ultra 1 Creator Series Service Manual • August 1996
If one internal disk drive is configured with the system and the
probe-scsi
test
fails to show the device in the message, replace the drive. If the problem is still
evident after replacing the drive, replace the system board. If replacing both the disk
drive and the system board does not correct the problem, replace the internal disk
drive cable and SCSI backplane assembly.
4.4
Power Supply Test
The following provides instructions to test the power supply.
Note –
FIGURE 4-1
and
TABLE 4-2
identify power supply connector J2601.
FIGURE 4-2
and
TABLE 4-3
identify power supply connector J2603.
●
Use a digital voltage meter (DVM) to check the power supply output voltages as
follows:
Note –
Power supply connectors J2601 through J2603 must remain connected to the
system board.
a. With the negative probe of the VOM placed on a connector ground (Gnd) pin,
position the positive probe on each power pin.
b. 12 VDC, -12 VDC, +5 VDC, +3.3 VDC and +3.0 VDC.
c. If any power pin signal is not present with the power supply active and
properly connected to the system board, replace the power supply.
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...