SONY MDR7502
Manual de Servicio

MDR-7502
SERVICE MANUAL
REVISED 3
Ver 1.1 1998.12

US Model AEP Model

SPECIFICATIONS
Type Driver units Impedance Supra-aural, closed 30 mm dia., dynamic type 45 ohms at 1 kHz (FORMER TYPE) 24 ohms at 1 kHz (NEW TYPE) Sensitivity 100 dB/mW Rated power 0.10 W Power handling capacity 0.50 W Frequency response 16 - 22,000Hz Cord 2 m long with a stereo unimatch plug Weight Approx. 150 g (without cord)

2. WIRING DIAGRAM
FORMER TYPE
� L ch � � R ch �

Copper

GRN Marking

RED

Copper

NEW TYPE

1. DRIVER UNIT INSTALLATION
Note : Follow the installation procedure in the numerical

order given.
Driver unit
2 Screws (+P 2x4) 4 5

NEW TYPE
� L ch � Marking � R ch �

2 Screw (+P 2x4)

5

Copper
Front board ASSY
3 Soldering

GRN

RED

Copper

Claws

Housing

1

STEREO HEADPHONES
MICROFILM