Filter
Top Products
3745 FRU Exchange Procedure
DCREG 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 4-45.
5. Locate the basic board. Refer to Figure 4-45.
6. Remove the basic board cover (loosen the
two screws then lift up the cover).
7. Attention: Use the ESD kit and procedures.
8. At the channel tailgate set all the Select Out
Bypass switches to bypass (refer to
Figure 4-43 and to Figure 4-44 on
page 4-36).
9. Remove all the cards.
10. Release the retainer at the bottom of the
board (one screw must be loosened).
11. Remove the DCREG card in position E-F or
G-H of row Z. Refer to Figure 4-5 on
page 4-7, Figure 4-6 on page 4-8, or
Figure 4-7 on page 4-9.
Figure 4-45. Basic Board and CB1 Locations
Installation Procedure
1. Install the new DCREG card.
2. Re-install the retainer.
3. Re-install the cards.
4. Replace the basic board cover.
5. Set all the Select Out Bypass switches to
normal.
6. Switch CB1 ON.
7. Close the front door.
8. Press Power On on the control panel.
9. 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.
10. Go to “Action to Take After a Diagnostic Run
or an FRU Exchange” on page 4-99.
4-38 3745 Models 130 to 17A: MIP