Nokia 5140 Manuales De Servicio

NPL-4/5

System Module and User Interface

Nokia Customer Care

Page 58

 Copyright © 2004 Nokia Corporation. All rights reserved.

Issue 1 05/04

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Shutdown

-MagIC is set to stand-by mode 

-Logic voltage VIO is always on

Analog voltage supply is normally off, but other functions can switch voltage on

•

Active compass function 

-External power supply is on

-MagIC is set to active mode

-System clock is activated

•

Production test mode

-As active mode but also offset strap current is activated

Compass function is controlled via UI SW menu structures. When compass display menu 
is selected, it starts compass function.

Compass azimuth result is displayed with heading angle with numerical mode and with 
(compass rose) pointer. Measurement is always continuous, only user action can stop 
actions. 

Other functionality during active compass function:

•

Minimal TX RF 

-Location update via network

•

No charging

•

Keyboard lights always on (also during calibration)