9.Connect the CPU power sense cable to the power distribution board at connectors J0205 and J0206.

10.Connect the keyswitch/power button/LED cable to the power distribution board at connector J0500.

11.Connect the I/O power cable to the power distribution board at connector J0210.

12.Connect the UltraSCSI data cable to the main logic board at connector J1801.

5.4.3What Next

To reassemble the system, complete this task:

4Section 6.4 “How to Replace the Fan Tray Assembly” on page 165 Section 6.2 “How to Install a Power Supply” on page 162

5.5How to Connect the System Cables

This section provides an overview of cable connector locations and cable routing. Procedures for removing and replacing specific cables are covered within the removal and replacement process of the assemblies with which these cables are associated.

5.5.1Before You Begin

Complete these tasks:

Section 2.1 “How to Power Off the System” on page 54

Section 2.4 “How to Position the System for Service” on page 60

4Section 2.6 “How to Remove the System Cover” on page 65 Section 2.8 “How to Avoid Electrostatic Discharge” on page 69

5.5.2What to Do

1.Identify the cable that you want to install or replace. Use the information in the following table and illustrations to determine where to connect each end of the cable.

Removing and Replacing Backplanes and Cables 155

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Sun Microsystems 220R service manual How to Connect the System Cables, What Next