Pwb Outline (Baseband); External Audio Connector - Nokia RM-291 Service Manual

RM-291
System module

PWB outline (baseband)

External audio connector

The system connector, containing a 4-pole Jack plug, gains the access to the external audio interface. The
Jack plug, which is integrated in the system connector, contains a mechanical switch, which is used to detect
the connection of the accessories. The configuration for the 4-pole Jack-plug is shown in the following figure.
Line symbol
XMICP
Issue 1
Figure 125 4-pole jack plug for audio accessory
Table 11 Connector for External Audio Accessories
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Function
External microphone signal input
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