Troubleshooting
Problem
Diagrams for the power supply interface to the PC Server 704
Resolving The Problem
| 1 | J1, power to lower SCSI hard drive backplane |
| 2 | J2, power to upper SCSI hard drive backplane |
| 3 | J3, +5.1 Vdc and +12 Vdc power to system peripherals |
| 4 | J4, +5.1 Vdc and +12 Vdc power to system peripherals |
| 5 | J5, +5.1 Vdc and +12 Vdc power to diskette drives |
| 6 | J6, power to J9 on system board |
| 7 | J12 and 13, fan connectors |
| 8 | J10, I2 C connector |
| 9 | J11, power control signal to J11 system on system board |
| 10 | J7, power to J10 on system board |
| 11, 12, 13 | J9A, J9B, J9C, DC power connections from supply |
| Pin position | Description |
| 1,6 | Ground |
| 7 | +3.3 Vdc |
| 8 | +12 Vdc |
| 9 | -12 Vdc |
| 10 | -5 Vdc |
| 11, 12 | +5.1 Vdc |
| 13, 17 | Ground |
| 18, 19 | +3.3 Vdc |
| 20, 21 | +12 Vdc |
| 22, 24 | +5.1 Vdc |
11, 12, 13 J8A, J8B, J8C, Power control and status signals from supply
| Pin position | Description |
| 1 | +5 Vdc remote sense (+) |
| 2 | +12 Vdc remote sense (+) |
| 3 | +3.3 Vdc remote sense (+) |
| 4 | Ground remote sense (-) |
| 5 | +5 Vdc load share |
| 6 | +12 Vdc load share |
| 7 | +3.3 Vdc load share |
| 8 | PON |
| 9 | Vbias |
| 10 | +5 V standby |
| 11 | FAULT |
| 12 | Ground |
| 13 | Power good |
| 14, 15 | NC |
Power supplies and padlocks
Document Location
Worldwide
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Document Information
Modified date:
23 January 2019
UID
ibm1GKEY-3H5CN5