Topcap Cable Replacement - Sun Microsystems Sun Fire E25K Service Manual

7. Insert the connector at J2 of the upper and lower fan backplane to the front and
rear of the system.
8. With the 3/16 nut driver, secure the vertical bracket with the two (2) nut screws to
holds the internal harness set connectors to the fan backplane on the front and
rear of the system.
9. With the jack screws, install the seven (7) 8W8 Combo-D 8-pin DC power
connectors (on the left side of the power module) and the two (2) DB-25 control
connectors (on the right side) on the front and rear of the system.
10. Replace the honeycomb EMI filter panel onto the air plenum cover and install
with the twenty-two (22) M4x30 panhead screws on the front and rear of the
system.
11. Replace the upper and lower fan trays at the front and rear of the system.
12. Install the system board modules and their associated carrier plate assemblies into
the front and rear of the system.
13. Power on the system.
See Section 16.3, "Powering On the System" on page
16.2.7

TopCap Cable Replacement

16.2.7.1 Removing the TopCap Cable
Caution – Be sure you are properly grounded before you begin the hardware
removal and installation. There are four ground points on the system cabinet, two at
the front top left and top right, and two at the rear top left and top right.
1. Power off the system.
See Section 16.2.1, "Powering Off the System for Cable Replacement" on page
2. Remove the three (3) M4x12 panhead screws holding the TopCap to the chassis.
3. Disconnect the 12V power cable from the rear of the TopCap.
4. Remove the right-rear external side panel by loosening the lower captive screws
on the panel by a quarter turn, and lift upward off the chassis.
5. Remove the four (4) M4x12 panhead screws holding the four (4) cable clamps that
secure the TopCap cable to the chassis.
16-18 Sun Fire E25K/E20K Systems Service Manual • April 2004
16-20.
16-8.