Chapter 4
Troubleshooting Procedures
4-5
a. With the negative probe of the DVM placed on a connector ground (Gnd) pin,
position the positive probe on each power pin.
See Section B.1 “Power Supply Connectors” on page B-1.
b. Verify voltage and signal availability as listed in
TABLE B-1
on page B-2.
6. After you finish testing the power supply, remove the wrist strap, replace the
system cover, and power on the system as described in Chapter 9 “Finishing
Component Replacement.”
4.5
DIMM Failure
At times, the operating environment, diagnostic program, or POST might not
display a DIMM location (U number) as part of a memory error message. In this
situation, the only available information is a physical memory address and failing
byte (or bit). The following table lists physical memory addresses that can be used to
locate a defective DIMM. For more information on POST diagnostics, see Section 3.1
“POST Overview” on page 3-1.
4.6
OpenBoot PROM On-Board Diagnostics
The following sections describe the OpenBoot PROM on-board diagnostics. To
execute the OpenBoot PROM on-board diagnostics, the system must be at the
ok
prompt. The OpenBoot PROM on-board diagnostics are described as follows:
■
Section 4.6.1 “Watch-Clock Diagnostic” on page 4-6
■
Section 4.6.2 “Watch-Net and Watch-Net-All Diagnostics” on page 4-6
■
Section 4.6.3 “Probe-IDE Diagnostic” on page 4-8
■
Section 4.6.4 “Test device alias, device path, -All Diagnostic” on page 4-8
TABLE 4-2
DIMM Physical Memory Address
DIMM Slot
Physical Address Range
DIMM Starting Address (Hex)
DIMM0 (U2)
DIMM1 (U3)
0 to 512MB (0 to 0.5GB)
512MB to 1024MB (0.5GB to 1GB)
0X 00000000
0X 20000000
DIMM2 (U4)
DIMM3 (U5)
1024MB to 1536MB (1GB to 1.5GB)
1536MB to 2048MB (1.5GB to 2GB)
0X 40000000
0X 60000000
Summary of Contents for Sun Blade 100
Page 6: ...vi Sun Blade 1000 Service Manual September 2000...
Page 8: ...viii Sun Blade 100 Service Manual October 2000...
Page 26: ...xxvi Sun Blade 100 Service Manual October 2000...
Page 30: ...xxx Sun Blade 100 Service Manual October 2000...
Page 38: ...xxxviii Sun Blade 100 Service Manual October 2000...
Page 40: ...1 2 Sun Blade 100 Service Manual October 2000 FIGURE 1 1 Sun Blade 100 System...
Page 48: ...1 10 Sun Blade 100 Service Manual October 2000...
Page 52: ...2 4 Sun Blade 100 Service Manual October 2000...
Page 94: ...4 26 Sun Blade 100 Service Manual October 2000...
Page 102: ...5 8 Sun Blade 100 Service Manual October 2000...
Page 120: ...6 18 Sun Blade 100 Service Manual October 2000...
Page 154: ...8 22 Sun Blade 100 Service Manual October 2000...
Page 158: ...9 4 Sun Blade 100 Service Manual October 2000...
Page 162: ...10 8 Sun Blade 100 Service Manual October 2000...
Page 170: ...A 8 Sun Grover Service Manual October 2000...