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MAP 1541: JTAG Problem Isolation
Step 1541-1
Record the error code and location code(s) that sent you to this MAP.
Step 1541-2
Turn off the power.
Step 1541-3
Replace the following, if present, one at a time and in the order listed:
v First location code item recorded, if any, "Step 1541-1."
v Second location code item recorded, if any, in "Step 1541-1."
v Third location code item recorded, if any, in "Step 1541-1."
v Fourth location code item recorded, if any, in "Step 1541-1."
v Replace the service processor card at U0.1-P1-X1.
v All memory DIMMS on the system backplane at location U0.1-P1-Mn (n equals 1 to 8), if not recorded
in "Step 1541-1."
v System backplane at location U0.1-P1, if not recorded in "Step 1541-1."
Step 1541-4
Turn on the power.
Step 1541-5
Did the system stop with the same error code as recorded in "Step 1541-1"?
Yes
Go to "Step 1541-6."
No
The part just replaced was defective. This ends the procedure.
Return the system to its original configuration.
Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries Diagnostic Information for
Multiple Bus Systems.
Step 1541-6
Have all the cards listed in "Step 1541-3" been replaced?
Yes
Go to "Step 1541-7."
No
Go to "Step 1541-2."
Step 1541-7
Turn off the power. Call for support.
MAP 1542: I/O Problem Isolation
This procedure is typically used to isolate problems associated with externally I/O subsystems and the
CEC subsystem. This system unit does not have the capability to attach external I/O subsystems. To
isolate problems associated with I/O whenever you are directed to MAP 1542, go to "MAP 1548: System
Processor Problem Isolation" on page 90.
Note: This MAP is included to be consistent with MAP 1321, which is common to all machines that might
use an HMC for system management.
Chapter 3. Maintenance Analysis Procedures (MAPs)
89
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