crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2861143:0crwdne2861143:0

Cambridge Audio A3i Motherboard Replacement

crwdns2915892:0crwdne2915892:0

This guide describes the steps necessary to replace the motherboard of the system. This board contains the circuitry for the amplification, power, and output.

crwdns2942213:0crwdne2942213:0

  1. Cambridge Audio A3i Motherboard Replacement, Case: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove 2 screws from each side of the amplifier.

    crwdns2913378:0crwdne2913378:0

  2. Cambridge Audio A3i Motherboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove 2 screws on rear of device. Slide top cover up and back from main case.

    crwdns2913378:0crwdne2913378:0

  3. Cambridge Audio A3i Motherboard Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Cambridge Audio A3i Motherboard Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Remove 3 screws on bottom of case.

    • Remove 13 screws on rear panel.

    • Do not move the rear panel too far, as the power cord is still connected.

    crwdns2913378:0crwdne2913378:0

  5. Cambridge Audio A3i Motherboard Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Using a pair of pliers, squeeze the retainer for the power cord as shown and pull it toward the external side the panel.

    • It may require some wiggling, but it should slip out of the hole and then off of the cord.

    crwdns2913378:0crwdne2913378:0

  6. Cambridge Audio A3i Motherboard Replacement, Motherboard: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove 2 screws from each side of the heatsink. These must be accessed from directly above the device.

    • Remove the green grounding wire from the mounting screw.

    crwdns2913378:0crwdne2913378:0

  7. Cambridge Audio A3i Motherboard Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • With the amplifier on it's side, remove the 4 screws that hold the motherboard frame to the main case.

    • Be sure to hold the motherboard with one hand while removing the mount screws.

    crwdns2913378:0crwdne2913378:0

  8. Cambridge Audio A3i Motherboard Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Cambridge Audio A3i Motherboard Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Unscrew ground wire from main case.

    • De solder 4 wires coming from transformer.

    • The motherboard can now be lifted from the case. Any part that needs to be removed from it can be de-soldered.

    crwdns2913378:0crwdne2913378:0
crwdns2915888:0crwdne2915888:0

To reassemble your device, follow these instructions in reverse order.

crwdns2935227:0crwdne2935227:0

crwdns2862417:0crwdne2862417:0

crwdns2935293:0crwdnd2935293:06crwdnd2935293:0crwdne2935293:0

Colby

crwdns2935283:004/15/10crwdne2935283:0

338 crwdns2915208:0crwdne2915208:0

crwdns2935297:03crwdne2935297:0

crwdns2918514:0crwdne2918514:0: 10

crwdns2935301:07crwdne2935301:0

crwdns2915084:0crwdne2915084:0

Cal Poly, Team 28-36, Regan Spring 2010 crwdns2935289:0Cal Poly, Team 28-36, Regan Spring 2010crwdne2935289:0

CPSU-REGAN-S10S28G36

crwdns2931471:04crwdne2931471:0

crwdns2935297:03crwdne2935297:0

crwdns2944067:00crwdne2944067:0

crwdns2917038:0crwdne2917038:0

crwdns2936625:0crwdne2936625:0:

crwdns2936751:024crwdne2936751:0 2

crwdns2936753:07crwdne2936753:0 5

crwdns2936753:030crwdne2936753:0 26

crwdns2942667:0crwdne2942667:0 6,620