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Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are
replaceable by the customer and which components must be replaced by an IBM field service technician.
Error code/symptom
201-XXX-Y23 (Multiple DIMM failure in
Port 1 Bank 3; see "Memory modules" on
page 39)
201-XXX-Y24 (Multiple DIMM failure in
Port 1 Bank 4; see "Memory modules" on
page 39)
201-XXX-Y31 (Multiple DIMM failure in
Port 2 Bank 1; see "Memory modules" on
page 39)
201-XXX-Y32 (Multiple DIMM failure in
Port 2 Bank 2; see "Memory modules" on
page 39)
102
IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide
FRU/action
1. Isolate failing DIMM:
a. Replace a DIMM in bank with a "known good" DIMM.
b. Rerun memory diagnostic for the failing bank.
c. If test fails, mark replaced DIMM as "good" DIMM.
d. If test passes, mark replaced DIMM as "bad" DIMM.
e. If DIMM tested is "bad", remove it and replace it.
f. If DIMM tested is "good", do not replace it.
2. Repeat steps 1a through 1f with other DIMMs in failing bank until
error is fixed.
3. If error is not fixed, replace memory cassette.
1. Isolate failing DIMM:
a. Replace a DIMM in bank with a "known good" DIMM.
b. Rerun memory diagnostic for the failing bank.
c. If test fails, mark replaced DIMM as "good" DIMM.
d. If test passes, mark replaced DIMM as "bad" DIMM.
e. If DIMM tested is "bad", remove it and replace it.
f. If DIMM tested is "good", do not replace it.
2. Repeat steps 1a through 1f with other DIMMs in failing bank until
error is fixed.
3. If error is not fixed, replace memory cassette.
1. Isolate failing DIMM:
a. Replace a DIMM in bank with a "known good" DIMM.
b. Rerun memory diagnostic for the failing bank.
c. If test fails, mark replaced DIMM as "good" DIMM.
d. If test passes, mark replaced DIMM as "bad" DIMM.
e. If DIMM tested is "bad", remove it and replace it.
f. If DIMM tested is "good", do not replace it.
2. Repeat steps 1a through 1f with other DIMMs in failing bank until
error is fixed.
3. If error is not fixed, replace memory cassette.
1. Isolate failing DIMM:
a. Replace a DIMM in bank with a "known good" DIMM.
b. Rerun memory diagnostic for the failing bank.
c. If test fails, mark replaced DIMM as "good" DIMM.
d. If test passes, mark replaced DIMM as "bad" DIMM.
e. If DIMM tested is "bad", remove it and replace it.
f. If DIMM tested is "good", do not replace it.
2. Repeat steps 1a through 1f with other DIMMs in failing bank until
error is fixed.
3. If error is not fixed, replace memory cassette.
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