Distribution Board - Sun Microsystems Enterprise 250 Owner's Manual

How to Remove the Power

Distribution Board

Before You Begin
Complete these tasks:
4 "How to Power Off the System" on page 55
4 "How to Remove the Side Access Panel" on page 60
4 "How to Avoid Electrostatic Discharge" on page 64
4 "How to Remove the Fan Tray Assembly" on page 150
4 "How to Remove a Power Supply" on page 153
If your system has two power supplies, remove both of them.
What to Do
1. Disconnect all cables attached to the power distribution board.
Start at the top of the board and work your way down.
a. Disconnect the keyswitch/LED cable at connector J0401.
b. Disconnect the system interlock cable at connector J0501.
c. Disconnect the two power sense cables at connectors J0201 and J0202.
d. Disconnect the DC power cables at connectors J0204, J0205, and J0206.
e. Disconnect the UltraSCSI power cable at connector J0207.
2. Loosen the two captive Phillips screws that secure the board to its mounting
brackets.
One screw is located at the top edge, and the other is located at the bottom edge
of the power distribution board.
Sun Enterprise 250 Server Owner's Guide ♦ Revision A, June 1998
184