Sun Microsystems Netra X4200 M2, Service Manual

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72 Netra X4200 M2 Server Service Manual • May 2007
FIGURE 3-50
Releasing and removing the DIMM
For the Netra X4200 M2 server, you can view the DIMM fault LEDs without the
power cords attached. These LEDs can be lit by a capacitor on the motherboard
for up to one minute. To light the DIMM fault LEDs, push the small button on
the motherboard labeled “DIMM SW2.” See
FIGURE 3-51
for the numbering and
pairing of the Netra X4200 M2 DIMM slots.
Note –
To push the DIMM SW2 button, the PCI Tray must be removed and the
button must be pushed through the hole in the PCI-E cable hold-down bracket.
Netra X4200 M2 DIMM Population Rules
The DIMM population rules for the Netra X4200 M2 server are as follows:
■
The Netra X4200 M2 server uses only DDR2 DIMMs.
■
Each CPU can support a maximum of four DDR2 DIMMs.
■
Each pair of DIMMs must be identical (same manufacturer and capacity).
■
The DIMM slots are paired and the DIMMs must be installed in pairs (A1 and B1,
A0 and B0). The memory sockets are colored black or white to indicate which
slots are paired by matching colors.