Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 96

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Control Unit Problems
Power Supply Problems
Disconnect the other cable from the header labeled P101 on the

right side of the power supply circuit board.
You need to grip this cable firmly and pull forcefully.
Remove the four screws from the ring generator, as shown in

Figure
Remove the ring generator.

Position the replacement ring generator, as shown in

Align the screw holes.
Make sure the P1 header on the ring generator is on the same side of the
power supply housing as the P101 header on the circuit board.
Replace the four screws and fasten them to secure the ring

generator.
Connect one end of the new ring generator's cable with the 3-pin

connectors to the header labeled P101 on the power supply circuit
board.
This cable connector, as with all four of the cable connectors, is keyed so
that you cannot attach it to the header if it is turned the wrong way.
Connect the other end of the cable to the header labeled P1 on the

ring generator.
The cable headers, P1 and P101, should be on the same side of the
housing, so that the cables are not crossing each other.
Connect one end of the new 4-pin cable to the header labeled P202

on the power supply circuit board.
Connect the other end of the cable to the header labeled P2 on the

ring generator.
Attach the cables to the clips on the inside edge of the plastic

housing.
Replace the top of the module housing.

Take time to ensure that the on/off faceplate on the front of the power
supply housing is aligned and inside the top cover.
Carefully, taking time to make sure the on/off faceplate stays

aligned, turn the module over and replace the five screws.
4-2.
Issue 1
June 1997
Page 4-6
Figure 4-2.