IBM System/370 145 Reference Summary page 104

POWER SUPPLIES
Regulator Turn-On Sequence
Stage I:
All IFA Regs 206*
105
111
207*
107
112
208*
101
110
102 109
205* 104
Stage 11:
All IFA Regs 206* 201*
406
207* 202* } P•rnllel
407
208*
401
Bring-Up
405 403 402
205*
404
* Main Storage Frame
9.2