Nokia RM-555 Service Manual page 221

RM-555
System Module and User Interface
• Audio input (mono microphone from headset)
• Control data (ECI)
• TV-out with composite signal to 75ohm coax cable
• Connects FM receiver to headphones, which serves as FM antenna
Figure 86 Accessory (AV) connector
Figure 87 Accessory (AV) connector with DAC33 and TPA6130 audio enhancements
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