IBM P 615 series, Service Manual

Page: 132 / 491

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-M n ( 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:
Processor Subsystem Problem Isolation” on page 113.
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.
112
Eserver
pSeries 615 Service Guide