Backlight And Illumination; Camera; Audio Concept - Nokia 2228Arte Service Manual

RM-377
System Module Description

Backlight and illumination

In this phone, Display backlight is common by internal LCD, The light source comes from internal LCM, The LCM
backlight control allow to turn on/off, The user ability to set backlight power save timer.

Camera

Camera is support in the product, 8x zoom level and dedicate camera key.

Audio concept

The functional core of audio hardware is built in QSC6030 , and for EN28 there is an external circuit with melody
IC
The melody IC provide an external speaker and headphone amplify
Integrated hand free (IHF) speaker is driven by AB-class audio amplify with max 0.6W output power
There are transducers
For QSC6030
2 analog input ( Handset and Headset Microphone )
1 earpiece for handset
For Melody IC
2 analog input
I2S interface
Stereo headphone output
AB-class speaker amplify output
Issue 1
Figure 10 Audio block diagram
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