IBM RS6000 Service Guide - Page 52

Step 1540-5 The failure may be caused by the last pair of memory DIMMs installed or the memory card. To isolate the failing FRU, do the following: 1. Turn the power off and remove the power cable. 2. Exchange the last memory DIMM pair installed. 3. Reinstall the power cable. 4. Turn the power on. 5. Wait for the operator panel to stabilize at a checkpoint. Note: Checkpoints E1F2, E1F3 and STBY are stable as soon as they appear. Other checkpoints may take up to 3 minutes to assure stability, depending on system configuration. Does the operator panel stabilize with code E1F2, E1F3, E1F7, or STBY? NO Go to "Step 1540-6" on page 2-23. YES Go to "MAP 410: Repair Checkout" in the IBM RS/6000 Diagnostic Information for Multiple Bus Systems. 2-22 Service Guide