Back Camera Slider Detection Switch; Flash Led - Nokia N72 Service Manual

RM-180
Nokia Customer Care System Module
The camera module uses socket type connecting. For versioning, laser marked serial numbering is used on
the PWB.
The main parts of the module are:
• Lens unit including lens aperture.
• Infrared filter; used to prevent infrared light from contaminating the image colours. The IR filter is glued
to the EMI shielded camera body.
• Camera body; made of conductive metallized plastic and attached to the PWB with glue.
• Sensor array including DSP functions is glued and wire-bonded to the PWB.
• PWB, FR-4 type
• Passive components
• Camera protection window; part of the phone cover mechanics
• Dust gasket between the lens unit and camera protection window

Back camera slider detection switch

The back camera and flash LED have a cover slider, which position is detected with a slider switch (slider
sensor).
When the slider covers the back camera and flash LED (upper position), the slider switch is open circuit (not
pressed) and the application processor is connected to VIO. When the slider is slid down, the switch is pressed
and it connects the Helen pin mcbsp1_sync to GND (typical 160mV) and activates the back camera application
Figure 96 Slider switch connection

Flash LED

The device back camera has a flash LED (FLED), providing better lighting conditions in darker environments.
The same LED is also used as an indicator light to indicate video clip recording.
Page 9 –20 COMPANY CONFIDENTIAL Issue 1
Copyright © 2006 Nokia. All rights reserved.