GE DigitalFlo XGM868i Service Manual page 39

4.7.1 Assembling the Circuit Board Assembly (cont.)
Note: If the thermal gap filler pad of the power supply board has been damaged, you must remove and replace it
before reinserting the power supply board. First, remove and discard the damaged pad. Then remove the blue
protective liner from the new pad and apply it with the white face against the power supply board.
3. Secure the power supply board and heat sink to the main board by reinstalling the screws, flat washers and lock
washer previously removed from the corners of the power supply board. See Illustration 11 in Figure 8 on page 35.
4. Refer back to Illustration 7 in Figure 7 on page 34. Carefully align the terminal board onto the main board/power
supply assembly and the two option boards (Slot 1 and Slot 2, where applicable), so that the connectors listed in
Table 5 are facing each other.
1 J7 Connector (Large Three-Pin Connector Plug)
2 J6 Connector (Large Three-Pin Connector Plug)
3 P7 Connector
4 P10 Connector
5 P9 Connector
6 P8 Connector
7 P21 Connector
8 P22 Connector
Firmly press the terminal board and the interconnect board toward each other until all of the connectors are
completely seated.
With two option cards installed, it may require some patience to get all of the connectors properly aligned.
IMPORTANT:
Do not force the assembly together, or some of the pins may not enter the sockets properly.
5. Secure the assembly together by installing the three mounting screws, flat washers and lock washers previously
removed from the terminal board. Be sure to install one end of the green grounding jumper wire under the screw
indicated in Illustration 7 in Figure 7 on page 34. The smaller screw should be used at the angle bracket location,
and secured with a nut, lock washer and flat washer.
Proceed to the next section for instructions on installing the reassembled circuit board assembly in the electronics
enclosure.
DigitalFlow™ XGM868i Service Manual
Table 5: Matings for Terminal Board
Terminal Board Mating Board
Power Tab on AC Power Supply Board
Power Tab on DC Power Supply Board
J7 Connector on Main Board
J9 Connector on Main Board
J10 Connector on Main Board
J8 Connector on Main Board
J1/J3 Connector on I/O Board, Slot 2 Option
P2 Connector on I/O Board, Slot 1
Chapter 4. Parts Replacement
31