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Sega Master System

Power Connector

Plug Type Coaxial / Barrel Connector
Size 5.5mm Outer Diameter / 2.1mm Inner Diameter
Voltage 9V DC
Amperage 850mA
Polarity Center Negative

Output Audio/Video Connector

262 Degrees "U-Shape" 8-Pin DIN

RGB Encoder

Sony V7040 Pinout (Early Console)

Sony CXA1145P Pinout (VA3 Console)

Video Display Processor

SEGA 315-5124 Pinout (Early Console)

SEGA 315-5246 Pinout (VA3 Console)

Controller Port Pinout

Pin Function
1 Up
2 Down
3 Left
4 Right
5 No Connection
6 Button 1
7 Light Sensor
8 Ground
9 Button 2

Audio Video Schematics

PAL VA3 171-5535-10