MAP 1541: JTAG Problem IsolationStep 1541-1Record the error code and location code(s) that sent you to this MAP.Step 1541-2Turn off the power.Step 1541-3Replace 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 CEC backplane at U0.1-P1.v Processor card at location U0.1-P1-C1 if not recorded in “Step 1541-1”.v All memory DIMMS on processor card 1 at location U0.1-P1-C1-Mn (n equals 1 to 8), if not recorded in“Step 1541-1”.v Processor card at location U0.1-P1-C2 if not recorded in “Step 1541-1”.v All memory DIMMS on processor card 2 at location U0.1-P1-C2-Mn (n equals 1 to 8), if not recorded in“Step 1541-1”.v PCI riser card at U0.1-P2.Step 1541-4Turn on the power.Step 1541-5Did 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 forMultiple Bus Systems.Step 1541-6Have all the cards listed in “Step 1541-3” been replaced?Yes Go to “Step 1541-7”.No Go to “Step 1541-2”.Step 1541-7Turn off the power. Call for support.126 Eserver pSeries 630 Model 6C4 and Model 6E4 Service Guide