3745 FRU Exchange Procedure
Installation Procedure
1. Install the new PS1 in the frame and fasten it
with the two screws .3/.
2. Reconnect the cable between the Fan1 and
the primary power box (J7).
3. Reconnect the power cables in their proper
positions on the PS1 front and rear sides.
4. Re-install the cover which protects TB1 to TB4
with two screws. Refer to Figure 4-93.
5. Re-install the cover which protects TB5 and
TB6 with two screws. Refer to Figure 4-93.
6. Re-install PS1 cover with the 2 screws .1/.
7. At the primary power box, reconnect the PS1
power cable .2/..
8. Switch CB1 ON.
9. Close the front and the rear door.
10. Press Power On on the control panel.
11. Referring to Chapter 3, “How to Run 3745
Diagnostics” on page 3-1, run the same diag-
nostic in ODG that you ran before you
exchanged the FRU.
12. Go to “Action to Take After a Diagnostic Run
or an FRU Exchange” on page 4-99.
Figure 4-92. Primary Power Box
Figure 4-93. Power Supply 1
4-68 3745 Models 130 to 17A: MIP