Sony CD Changer 4-957-284-01 Gear

The gear was used in Sony CD changers produced in the mid to late 1990s. It is a part of the CD tray and is responsible for the CD tray rotating.

Faulty gear can be replaced with 3D printed one.

Video showing replacement gear in operation.


Gear is compatible with following devices:
CDP-C23, CDP-C235, CDP-C245, CDP-C265, CDP-C345, CDP-C435, CDP-C445, CDP-C545, CDP-C661, CDP-C745, CDP-CA9ES, CDP-CE335, CDP-CE415, CDP-C250Z, CDP-CA8ES.
However, it might work also with other devices – just check your service manual.

Available for purchase.

Sony X-3356-638-1 (Reel R) Assy Gear

Prototype – available for testing only.

Gear attached to the motor – part of Sony X-3356-638-1 Motor (Reel R) Assembly. Gear is also compatible with Sony X-3371-429-1 that is actualy a substitute part.

3D printed replacement part was created according to the original part but it was not fully tested yet.

X-3356-638-1 Motor (Reel R) Assy position in drive

Anybody who is interested in testing and helping to finish the design is welcome. I can send the prototype for this purpose.

The part is compatible with following devices:
TCKA2E, TCKA2ES, TCKA2ESU, TCK620, TCK850, TCK850ES, TCRX79ES, TCWR901ES, TCWR99ES.

It also might be part of other device – just check corresponding service manual.