3745 FRU Exchange Procedure
Fan 2 Exchange Procedure
Removal Procedure
1. Inform the customer that the 3745 is to be
powered OFF.
2. Press Power OFF on the control panel.
3. Open the front door.
4. Switch CB1 OFF. Refer to Figure 4-68.
5. Locate Fan 2. Refer to Figure 4-68.
6. At Fan 2, disconnect the air flow detector
cable and the power cable. Refer to
Figure 4-69.
7. Remove the two screws .1/ which maintain
Fan 2 on the frame.
8. Slide the Fan 2 assembly out.
Installation Procedure
1. Install the new Fan 2 in the frame and fasten
it with the two screws .1/.
2. Reconnect the air flow detector cable and the
power cable to Fan 2.
3. Switch CB1 ON.
4. Close the front door.
5. Press Power On on the control panel.
6. 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. Go to “Action to Take
After a Diagnostic Run or an FRU Exchange”
on page 4-99.
Figure 4-68. Fan 2 and CB1 Locations
Figure 4-69. Fan 2 Air Flow Detector and Power
Cables
Chapter 4. 3745 FRU Exchange 4-51