Sun Microsystems Enterprise 250 Owner's Manual page 93

3. Position the board inside the chassis.
Align the notches at the top and bottom edges of the board with the corresponding
tabs on the chassis wall.
4. Press the main logic board against the chassis wall as you slide it toward the
rear panel.
5. Tighten the three captive screws securing the main logic board to the rear panel.
6. Reconnect the internal cables to the main logic board:
a. Reconnect the two power cables to connectors J2902 and J2903.
b. Reconnect the two power sense cables to connectors J2901 and J4501.
c. Reconnect the SCSI backplane data cable to connector J1801.
7. Reconnect any external cables to the rear panel of the system.
See "Locating Rear Panel Features" on page 7.
Note – When the side access panel is removed, the system power interlock switches
are activated. This safety mechanism prevents any DC voltages (except 5V standby
power) from reaching the main logic board while the side access panel is removed.
Chapter 5 Removing and Installing Main Logic Board Components 75