Author: Hugh

SRI Service Note #2
Replacing the 202 A/D board crystal

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ServiceNote#2.pub

If the PeakSimple software can not communicate with the A/D board, the crystal clock on the A/D board may have failed.
Remove the 6 Phillips head screws which hold the GC’s bottom plate to the chassis.
Tilt the GC on its back and lower the bottom cover to expose the inside of the chassis.
The A/D board is located along the right side underneath the amplifier board.
Use a 5/64” allen wrench to remove the 4 screws holding the A/D board.

SRI Service Note #2
Replacing the 202 A/D board crystal

Do NOT remove all the wires connected to the board. ONLY remove those wires which prevent the board from sliding out from underneath the amp board.
If you remove any wires make careful notes so you can replace the wires correctly.
The crystal is located on the top right of the A/D board. It is mounted in a socket so you can just pull it out and replace it with a new one.
The crystal has only two legs ( pins ). Polarity is not important so it can be inserted in either direction.
Press the new crystal into the socket and replace the board in the GC chassis.

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ServiceNote#2.pub