IBM 3745 Series, Hardware Maintenance Reference

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Primary Power Box Distribution
\\\\\\\\
J3 \Line \ CB1 K1
i\\\\\\Filter\\\\/\\\\\/───────────────────────────────i J1 (AC) To PS1
\ \ \ &
\\\\\\\\ \ │
\ └───────────┐
\ │
/ CP2 │
\ │
J5 \ PS2 │ Control Panel
EPO1 i─────┐ \ \\\\\\\\\\ │ J8 ┌─────────────┐
│ \ \ ┌────┐ \ └──i────────────────┼─/ UEPO │
J6 │ \\\\\28 V├───────i────────────────┼─┘ Switch │
EPO2 i─────┤ \ │ │ \ ┌────────┐ │ │
├─────────┤ ├───O───i───┼ PCC ┼───┼─5 28 volts │
J7 │ \ └────┘ \ F1 J9 │ MOSS Bd│ └─────────────┘
EPO3 i─────┤ \ ┌────┐ \ │ │
│ \ │ 5 V├───────i───┼ PCC │
J8 │ \ │ │ \ J8 └────────┘
EPO4 i─────┘ \ │ │ \
\ └────┘ \ ┌─────────i J6 (DC) To Fan1
\ ┌────┐ \ CP3 │
\ │38 V├───────/──────┤
\ │ │ \ │
\ │ │ \ └─────────i J7 (DC) To Fan2
\ └────┘ \
\\\\\\\\\\
\\\ = Lines show hazardous areas where hazardous AC voltages are still
present when power is switched OFF at the control panel.
See YZ pages for details.
Chapter 10. Power System
10-7