Sun Microsystems 220R Cable Connectors and Routing, Cable Name Connections Routing and Management

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.

5.5.3Cable Connectors and Routing

Cable Name	Connections	Routing and Management
CPU power	From: Power distribution board	Routed from under the fan tray
sense cable	(J0205) and (J0206)To: Main logic	assembly to the main logic board
	board (J2901)
Main power	From: Power distribution board	Routed from under the fan tray
cable	(J0201) and (J0207)To: Main logic	assembly to the main logic board
	board (J2902) and (J2903)
I/O power cable	From: Power distribution board	Routed from under the fan tray
	(J0210)To: UltraSCSI backplane	assembly, through the notch on the
	(J0101) andTo: Removable media	fan tray assembly to the UltraSCSI
	assembly power connector	backplane and the RMA power
		connector
UltraSCSI data	From: Main logic board (J1801)To:	Routed flat under the tab on the
cable	UltraSCSI backplane (J0102)	side of the fan tray assembly
Removable	From: UltraSCSI backplane	Routed from the UltraSCSI
media SCSI	(J0302)To: RMA SCSI Connector	backplane to the removable media
cable		assembly SCSI connector
Keyswitch/	From: Power distribution board	Routed under the notch on the fan
power button/	(J0500)To: Front of chassis	tray assembly
LED cable
CPU core	From: Power distribution board	Routed from the power distribution
voltage power	(J0202)To: DC-to-DC board (J0103)	board to the DC-to-DC board
cable
CPU core	From: Power distribution board	From the power distribution board
voltage power	(J0203)To: DC-to-DC board (J0102)	to the DC-to-DC board
sense cable

156 Sun Enterprise 220R Server Service Manual ♦ January 2000, Revision A