Replacing Or Installing Memory Dimms - IBM 9114-275 - IntelliStation POWER 275 Service Manual

Replacing or Installing Memory DIMMs

To replace a memory DIMM, do the following:
1. Before handling any card, board, or memory DIMM, touch any metal surface of the chassis with one
hand to minimize static electricity discharge. Refer to "Handling Static-Sensitive Devices" on page
244..
2. If necessary, remove the memory DIMM from its antistatic package.
3. Ensure that the connector locking tabs are pushed out in the unlocked position before installing a new
memory DIMM, as shown in the following illustration.
Notes:
a. Memory DIMMs must be installed in quads (groups of 4) and in the correct slots. The only two
valid slot combinations that you can use are 2, 4, 5, and 7 OR 1, 3, 6, and 8. See the illustration
in "Memory DIMM Locations" on page 13.
b. Memory DIMMs are keyed to prevent a DIMM from being installed improperly. Note the locations
of the key tabs within the DIMMS connector before attempting to install the DIMM.
4. Carefully grasp the memory DIMM along two edges and align the connector.
5. Insert the memory card firmly into the connector.
6. Secure the memory DIMM with the locking tabs located at each end of the DIMM connector, as
shown in the following illustration.
Note: Memory DIMMs must be installed in quads (groups of 4) and in the correct slot. The only two
valid slot combinations that you can use are 1, 3, 6, and 8 OR 2, 4, 5, and 7. See the
illustration in "Memory DIMM Locations" on page 13.
7. Replace the service processor assembly as described in "Service Processor Assembly" on page 260.
8. Replace the power supply and the power supply filler (or both power supplies if a secondary supply is
installed), as described in "Replacing a Power Supply with the System Power Off" on page 290.
9. Replace the fan tray assembly as described in "Replacing the Fan Tray Assembly" on page 269.
10. Replace the service access cover as described in "Removing the Service Access Cover" on page
249..
11. Return the system to the operating position as described in "Placing the Model 275 into the Service
and Operating Position" on page 248.
12. Reconnect all power and signal cables to their respective connectors.
13. Start the system as described in "Starting the System" on page 247.
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IntelliStation POWER 9114 Model 275 Service Guide
1 Locking Tabs (unlocked position)
2 Locking Tabs (locked position)