Effects of dirty or defective camera lens protection window

The following series of images demonstrates the effects of fingerprints on the camera protection window. Note The effects of any dirt in images can vary very much it may be difficult to judge if the window has been dirty when some image has been taken or if something else has been wrong. That is why the cleanness of the protection window should always be checked and the window should be wiped clean with a suitable cloth. Figure 46 Image taken with clear protection window Figure 46 Image taken...

Em Asic Vilma N

The EM ASIC (N2200) includes the following functional blocks Start up logic and reset control Charger detection Battery voltage monitoring 32.768kHz clock with external crystal Real time clock with external backup battery SIM card interface Stereo audio codecs and amplifiers A D converter EMC ASIP (Appcation Specified Integrated Passive) have been integrated inside the ASIC. It includes biasing passives for microphone , EMC filter for SIM, microphones etc.

SIM interface

The device has one SIM (Subscriber Identification Module) interface. It is only accessible if battery is removed. The SIM interface consists of an internal interface between RAPIDO and EM ASIC (N2200), and of an external interface between N2200 and SIM contacts. The SIM IF is shown in the following figure The EM ASIC handles the detection of the SIM card. The detection method is based in the BSI line. Because of the location of the SIM card, removing the battery causes a quick power down of the...

Bluetooth and Fm Rds radio module

Diagram Nokia N85

Bluetooth and FM radio receiver are provided by the same ASIC (Broadcom BCM2048). The device supports Bluetooth operation and FM radio rececption in both European USA and Japanese bands (the appropriate region-specific FM radio band is pre-configured in the phone software). The UART interface allows the device to communicate with the phone baseband engine using Bluetooth HCI commands. Commands to the FM radio can also be sent over the I2C interface. When Bluetooth is switched on, the phone user...

Phoenix audio loop tests and test results

The results presented in the table apply when no accessory is connected and battery voltage is set to 3.7V. Earpiece, internal microphone and speaker are in place during measurement. Applying a headset accessory during measurement causes a significant drop in measured quantities. The gain values presented in the table apply for a differential output vs. single-ended differential input.

IO expander and keyboard

I O expander is connected to Rapido via I2C bus and Genio66 is used as an I O Expander interrupt pin. Keyboard matrix 6x4 is connected to I O expander. In addition, the I O expander has general purpose IO's. Camera accelerator RSTX and Regulator enable, TVout Accelarator reset and Regulator enable are connected to I O expander GPIO's. Figure 74 I O expander and keyboard matrix Figure 74 I O expander and keyboard matrix RM-333 has three separate keyboards ITU...

Xcs

POS Point of Sale flash Flash concept with CU-4 flash concept with Flash concept with FPS-10 and Flash concept with SS-46 and Flash concept with SS-62 and Flash concept with FPS-10, SS-62 and Flash concept with FPS-10, SS-62 and Module jig service Module jig service concept with RF testing concept with RF Service concept for RF testing and RF BB Figure 2 POS flash Figure 3 Basic flash concept with Figure 4 CU-4 flash concept with Figure 5 Flash concept with FPS-10 and Figure 6 Flash concept...

Backup battery troubleshooting

Verify that the backup battery G2200 is empty U lt 1V . Switch the phone on. Measure voltage of the battery when the main battery is connected to the phone and the phone is switched on. Wait a few minutes and monitor that the backup battery voltage rises. Switch off the phone, disconnect the main battery and monitor that the voltage of the backup battery decreases. Normal behaviour of the voltage is described in the figures below If the voltage rises and falls quickly, check the back-up battery...

Testing for dust in camera module Symptoms and diagnosis

For detecting these kinds of problems, take an image of a uniform white surface and analyse it in full resolution. A good quality PC monitor is preferred for analysis. Search carefully, since finding these defects is not always easy. Figure Effects of dust on optical path is an example image containing easily detectable dust problems. When taking a white image, use uniformly lightened white paper or white wall. One possibility is to use uniform light but in this case make sure that the camera...