Fc 5075 - Tower Card - Cb1 - IBM iSeries 270 Service Manual

3. Remove the front and right side covers. See FC 5075 - Covers.
4. Disconnect the control panel cable and the cable that connects the backplane to the backplane CB1.
5. Disconnect the SPCN and power cables.
6. Remove the screws connecting the backplane to the frame.
7. Remove the backplane by pulling it out of the frame.
8. Replace the SPCN card by reversing the previous steps, then continue with the next step to set the
configuration ID.
9. Perform steps 23 (See page 569) and 24 (See page 570) in the Expansion unit power procedure.
Then, return here and continue with the next step.
10. Set the configuration ID in the tower card:
a. If the ac power is not applied, then apply it now.
Note: The tower may power up automatically.
b. Power down the expansion unit without removing the power cord using the Expansion unit power
procedure. Then, return here and continue with step 10c.
c. Select function 07 on the system panel and press Enter (07** will be displayed).
d. Use the arrow keys to increment/decrement to sub-function A9 (07A9 will be displayed). Press
Enter (07A9 00 will be displayed).
e. Use the arrow keys to increment/decrement to the frame address - usually '02, 03, etc.' for a FC
5075 (07nn will be displayed, where nn is the frame address). Press Enter (07nn 00 will be
displayed).
Note: The display on the addressed frame should now be blinking on and off.
f. Use the arrow keys to increment/decrement to a configuration ID to '90' (0790 will be displayed).
Press Enter (0790 00 will be displayed). After a few seconds, the display on the addressed FC
5075 frame will stop blinking and return to displaying the frame address.
g. Use the arrow keys to increment/decrement to the display 07** and press Enter (07 will be
displayed).
h. Use the arrow keys to increment/decrement to display 01 and press Enter.
i. Power the expansion unit back on. See the Expansion unit power procedure.
11. After exchanging an item, go to Verify the repair.
This ends the procedure.

FC 5075 - Tower card - CB1

For use by authorized service providers.
Use this procedure to remove or replace the tower card - CB1 in an FC 5075.
To remove or replace the tower card (CB1):
1. Power off the expansion tower. See the Expansion unit power procedure.
2. Remove the ac power cord from the frame that you are working on.
3. Remove the side cover. See FC 5075 - Covers.
4. Remove the PCI cards. See FC 5075 - Cards (dedicated).
5. Remove the airflow baffles. The vertical baffle is secured with one screw.
6. Remove the card support bracket.
7. Disconnect the HSL cable from the backplane.
8. Remove the cable connecting the top and bottom backplanes.
9. Remove the screws holding the backplane to the frame. Notice the aligning pins near the top of the
board and the power connections near the bottom of the board when reinstalling the board.
10. Reverse this procedure to install the tower card.
11. Set the configuration ID in the tower card:
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