.28/
VRM 5 connector (J17)
.29/
VRM 5 error LED (CR7)
.3ð/
VRM 4 connector (J16)
.31/
VRM 4 error LED (CR2)
.32/
Reserved (J11)
.33/
VRM 3 connector (J14)
.34/
VRM 3 error LED (CR3)
.35/
VRM 2 connector (J13)
.36/
VRM 2 error LED (CR6)
.37/
VRM 1 connector (J12)
.38/
VRM 1 error LED (CR5)
.39/
–
.42/
Microprocessor core-frequency-selection
jumper block (J31–J28)
.43/
Reserved (J27)
.44/
Reserved (J25)
.45/
Reserved (J26)
.46/
Reserved (J19)
.47/
Reset system jumper block (J34)
Processor board jumpers
Table 14 on page 256 contains the names and
descriptions of the jumper blocks located on the processor
board. Table 15 on page 256 shows the microprocessor
core-frequency-selection jumper settings. The highlighted
numbers in the table refer to the highlighted numbers in
the illustration in “Processor board component locations”
on page 254.
Notes
1. Turn off the server, and disconnect the power
cords before moving any jumpers.
2. Be sure the microprocessor bus-to-core fraction
is set correctly. For example, if you have a 400
MHz
2
microprocessor installed and the system
bus speed is 100 MHz (the default), jumpers
J28-J31 are set to a bus-to-core fraction of 4
(400/100). See Table 15 on page 256.
Attention
If the microprocessor bus-to-core fraction is incorrect,
system board components will overheat and
component damage might occur. Be sure that the
microprocessor core frequency selection is properly
set.
2
400 MHz denotes internal clock speed of the microprocessor
only; other factors also affect application performance.
Netfinity 5500 M20 - Type 8662
255
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