System Rack, I/O Rack, or Rack-Mounted Unit Cannot Be Powered Off . . . 100
The SRC Table Directed You Here and the SRC is 1xxx1200 .......102
The SRC Table Directed You Here and the SRC is 1xxx120y or 1xxx140y 105
Regulator Problem Isolation ..................110
Power Good Problem Isolation .................112
ACBoxProblemIsolation...................114
MAP 1540: Minimum Configuration .................117
Step 1540-1 .......................118
Step 1540-2 .......................118
Step 1540-3 .......................119
Step 1540-4 .......................120
Step 1540-5 .......................120
Step 1540-6 .......................120
Step 1540-7 .......................121
Step 1540-8 .......................121
Step 1540-9 .......................122
Step 1540-10 .......................122
Step 1540-11 .......................123
Step 1540-12 .......................123
Step 1540-13 .......................124
Step 1540-14 .......................124
Step 1540-15 .......................124
Step 1540-16 .......................124
Step 1540-17 .......................125
Step 1540-18 .......................125
Step 1540-19 .......................125
Step 1540-20 .......................126
Step 1540-21 .......................126
Step 1540-22 .......................126
Step 1540-23 .......................128
Step 1540-24 .......................128
Step 1540-25 .......................128
Step 1540-26 .......................128
Step 1540-26a ......................129
Step 1540-27 .......................129
Step 1540-28 .......................129
Step 1540-29 .......................129
Step 1540-30 .......................129
Step 1540-31 .......................129
Step 1540-32 .......................130
Step 1540-33 .......................130
Step 1540-34 .......................130
Step 1540-35 .......................131
Step 1540-36 .......................131
Step 1540-37 .......................131
Step 1540-38 .......................132
Step 1540-39 .......................132
Step 1540-40 .......................133
Chapter 4. Checkpoints ....................135
Contents v