Parts

External Clock for jitter reduction

What are the jobs to do?

1. Identify the system clock on the PRO2LF pcb and remove the correct parts in the correct way.

2. Hook up the low jitter clock from the XO3 pcb to the PRO2LF pcb.

3. Hook up the power supply to the XO3 pcb. General power solution

4. Test the implementation of the low jitter external system oscillator

5. Hook up the Spdiff re-clock circuit.

6. Test the re-clocked Spdiff output.

7. Hook up the power , direct from the CD-PRO2LF see job 7

Job 1

In order to work on the pcb the PRO2LF has to be flipped. As the resting post are now upside down the mechanism will rest on the turntable and that is not allowed. Best is therefore to use the packing material of the XO3 board in order to relief any pressure on the turntable.

After the identification of the parts They need to be removed. Take care of the ESD precautions and remove first the top of the x-tal housing. See the pictures. Squeeze and rotated at the same time. Only moderate force is required. Leave the position of the tool perpendicular to the PCB. Use your other hand to hold the metal chassis. (not demonstrated on the picture) By now there is no way back, or you order a replacement x-tal. We have a few for the ones who really want to revert.

The internal of the x-tal housing is now visible. Leave the lower part of the housing on the PCB.

Remove the x-tal material and the internal fixation material by means of a pair of tweezers. Hardly any force is required. The gold plated contacts become visible. The top is shown at the picture as well