IBM 7026-H80 - RS/6000 - 256 MB RAM Service Manual page 135

Service guide
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Step 1540-5
1. Turn off the power.
2. Disconnect the ac power cable(s) from the front of the CEC drawer.
3. If the system has a one-way processor card with memory DIMMs installed, record
the DIMM locations and remove all the memory DIMMs except the ones in slots 1
and 8–pair A. If a memory riser card with memory DIMMs is installed in slot
U1.1-P1-M1, record the DIMM locations and remove all the memory DIMMs except
the ones in slots 1, 2, 15, and 16–quad A.
Make sure the minimum memory DIMMs configuration of 256 MB is installed in the
memory riser card in the first slot of the system, or the one-way processor card if
there is no memory riser card. Use either a pair or a quad, depending on the
memory DIMMs available.
4. Replace the second memory riser card from slot U1.1-P1-M2, (if present), with a
memory filler card if one is available. Otherwise, record the DIMM locations, remove
all the memory DIMMs from the second memory riser card and install it back in slot
U1.1-P1-M2.
5. With the CEC drawer now configured with only minimum required memory, connect
the ac power cable to the CEC drawer and turn on the power to boot standalone
diagnostics from CD.
Is the Please define the System Console screen displayed?
NO
YES
Go to "Step 1540-6" on page 118.
Go to "Step 1540-8" on page 119.
Chapter 3. Maintenance Analysis Procedures
117

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