3 cable connectors and routing – Sun Microsystems 220R User Manual

Page 156

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2. Install the cable according to the routing and cable management instructions

provided in the table.

Each cable connector is keyed so that it can be connected in only one way.

5.5.3

Cable Connectors and Routing

Cable Name

Connections

Routing and Management

CPU power
sense cable

From: Power distribution board
(J0205) and (J0206)To: Main logic
board (J2901)

Routed from under the fan tray
assembly to the main logic board

Main power
cable

From: Power distribution board
(J0201) and (J0207)To: Main logic
board (J2902) and (J2903)

Routed from under the fan tray
assembly to the main logic board

I/O power cable

From: Power distribution board
(J0210)To: UltraSCSI backplane
(J0101) andTo: Removable media
assembly power connector

Routed from under the fan tray
assembly, through the notch on the
fan tray assembly to the UltraSCSI
backplane and the RMA power
connector

UltraSCSI data
cable

From: Main logic board (J1801)To:
UltraSCSI backplane (J0102)

Routed flat under the tab on the
side of the fan tray assembly

Removable
media SCSI
cable

From: UltraSCSI backplane
(J0302)To: RMA SCSI Connector

Routed from the UltraSCSI
backplane to the removable media
assembly SCSI connector

Keyswitch/
power button/
LED cable

From: Power distribution board
(J0500)To: Front of chassis

Routed under the notch on the fan
tray assembly

CPU core
voltage power
cable

From: Power distribution board
(J0202)To: DC-to-DC board (J0103)

Routed from the power distribution
board to the DC-to-DC board

CPU core
voltage power
sense cable

From: Power distribution board
(J0203)To: DC-to-DC board (J0102)

From the power distribution board
to the DC-to-DC board

156

Sun Enterprise 220R Server Service Manual

January 2000, Revision A

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