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The SONY 9-301-031-80 is a genuine OEM washer designed for use with the belt pack bracket assembly in compatible Sony consumer electronics equipment. This small but essential hardware component provides the correct seating and load distribution required for secure bracket mounting. It is used during assembly or repair procedures by electronics technicians and service professionals working on Sony portable audio equipment. Proper fitment of this washer ensures the belt pack bracket remains stable and correctly positioned within the unit.
This washer is intended for service and repair of Sony consumer electronics devices. It is referenced in the Sony parts catalog under the MDRSC10R model and related accessories. Technicians performing authorized warranty or out-of-warranty repairs on compatible Sony portable audio units will find this part appropriate for restoring factory assembly standards.
Referenced in Sony parts documentation for the MDRSC10R model. Verify fitment against the device service manual or Sony parts catalog before ordering.
Installation of this washer should be performed by a qualified electronics technician familiar with Sony portable audio device disassembly procedures. Power down and disconnect the device from any power source before beginning service. Use appropriate precision hand tools and follow the applicable Sony service manual for correct placement and torque sequence guidance specific to the assembly.
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