IBM 270, Service Manual

Page: 182 / 622

3. Remove the ac power cord from the expansion unit.
4. From the rear of the expansion tower, remove the external cables from the rear of the PCI card
enclosure and note their locations.
5. Remove the air flow baffle that is located directly above the PCI card enclosure. Loosen the three
fasteners and slide the air flow baffle out the backside.
6. Remove the cables from the front of the PCI card assembly and note their locations.
Attention: All cards are sensitive to electrostatic discharge. See Work with electrostatic
discharge-sensitive parts.
7. Remove the screws that hold the PCI card enclosure to the frame.
8. Pull the PCI card enclosure out of the frame while lifting the cables clear of the enclosure.
9. Remove the PCI cards from the enclosure and note their locations. See FC 5078, FC 0578 - Cards
(dedicated).
10. Remove the Network interface controller (NIC) card from the enclosure and note its location.
11. Install the new PCI card enclosure by reversing the above procedure.
12. 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.
13. 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 tower without removing the power cord using the Expansion unit
power procedure. Then, return here and continue with step 13c.
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, nn (nn is usually 02, 03, etc.
for expansion towers) (
07nn
will be displayed). 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. The configuration ID is:
v 84 for FC 5078, FC 0578.
v
89 for FC 5088, FC 0588.
( 078x will be displayed). Press Enter ( 078x 00 will be displayed).
g. After a few seconds, the display on the addressed frame will stop blinking and return to displaying
the frame address. Use the arrow keys to increment/decrement until
07**
is shown. Press Enter
to return the panel to 07. The tower ID is updated.
14. Power the expansion unit back on. See the Expansion unit power procedure.
15. After exchanging an item, go to Verify the repair.
This ends the procedure.
FC 5094, FC 5294, FC 8094, FC 9094 remove and replace procedures
For use by authorized service providers.
FC 5094, FC 9094 (with single line cord) - AC module - A01 and A02
FC 5094, FC 9094 (with dual line cord) - AC module - A01 and A02
FC 5094, FC 9094 - Air moving device - B01 and B02
FC 5094, FC 5294 - Cards (concurrent)
170
Hardware (Remove and Replace; Part Locations and Listings)