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Document ID: DDSE-3QNJA6

PCServer704 - Power Supply to Power Distribution Board Interface

Applicable to: World-Wide

Specifications (Power Supply to Power Distribution Board Interface)

Table1:
DC Power Connectors from Power Supply to J9A, J9B, J9C on Backplane

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

Table2:
Power Control and Status Signals from Supply to J8A, J8B, J8C on Backplane

Pin Position Description

1 +5.1 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 Not connected

Table3:
Power Backplane (J6 and J7), Power to System Board
J9 and J10 have identical pinouts, and their connection to the baseboard is interchangeable.

Pin Position Signal

1 +5V 2 Ground 3 +5V 4 Ground 5 +5V 6 Ground 7 +5V 8 Ground 9 +5V 10 Ground 11 +12V 12 Ground 13 +12V 14 Ground 15 +3.3V 16 Ground 17 +3.3V 18 Ground 19 +3.3V 20 Ground

Table4:
Power Backplane (J11), Power Control Signal to System Board

Pin Position Signal

1 -12 Vdc 2 -5 Vdc 3 Power-on 4 I2 C_SDA 5 I2 C_SCL 6 +5V remote sense (+) 7 +12V remote sense (+) 8 +5V standby 9 Ground 10 Power-good 11 Ground 12 I2 C_PRES 13 +3.3V remote sense (+) 14 Ground remote sense (-)

Table5:
Power Backplane (J1, J2), to SCSI Drive Backplane (J10)

Pin Position Description

1,3 +12 Vdc 4,9 Ground 10, 12 +5 Vdc

Power Backplane, I2 C Input Definitions
The power supply backplane has a single I2 C device to detect status and presence from each power supply. The device is connected through the power control signal connectors J11 and J10 to the I2 C circuit on the system board and the SCSI hard drive backplane. The address of the device is 44h.

Table6:
Power Backplane (J3, J4, J5), Power to System Peripherals

Pin Position Description

1 +12 Vdc 2,3 Ground 4 +5.1 Vdc

Table7:
Power Backplane Fan Connections (J12, J13)

Pin Position Description

1 Ground 2 +12 Vdc Channel B 3 Fan fail

Table8:
Specifications (Power Supply)

Description Specification

DC power +3.5 V @ 15 A +5.1 V @ 32 A +12 V @ 16 A -5 V @ 0.25 A -12 V @ 1 A 5 V standby @ 100 mA AC line voltage 100-120 V ac 200-240 V ac

Table9:
Current Sharing Maximum Output per Voltage

Number of +3.3V +5V +12V -5V -12V supplies

1 15A 32A 16A 0.25A 1A 2 28A 60A 30A 0.25A 1A 3 (redundant) 28A 60A 60A 0.25A 1A

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	Hint Category	Hardware Maintenance Information, Power
	Date Created	11-06-96
	Last Updated	01-06-98
	Revision Date	30-05-99
	Brand	IBM PC Server
	Product Family	PC Server 704
	Machine Type	8650
	Model
	TypeModel
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