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Figure 53 Old (left) and new (right) charger plugs
Charging is controlled by energy management, and external components are needed to protect the baseband
module against EMC, reverse polarity and transient frequency deviation.
Interfaces
FM radio
This phone uses a single-chip electronically tuned FM stereo radio with low voltage application.
Figure 54 FM radio interface
Camera
Camera interface
The RM-237 has a 1.3 Megapixel camera, supported by a hardware accelerator.
RM-237
System module
Nokia Customer Care
Issue 1
COMPANY CONFIDENTIAL
Page 8 –11
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