Lenovo i909 Manuale di manutenzione - Pagina 3

Sfoglia online o scarica il pdf Manuale di manutenzione per Telefono cellulare Lenovo i909. Lenovo i909 32.

Lenovo i909 Manuale di manutenzione
I908 Mobile Phone Maintenance Manual
PHONE EXTERIOR ......................................................................................................................5
1
MAIN BOARD LAYOUT...............................................................................................................7
2
COMPONENT SIDE: ............................................................................................................................7
3
BASEBAND ...................................................................................................................................9
3.1
No display after the phone is turned on.........................................................................9
3.1.1
3.1.2
The LCD backlight does not come on......................................................................10
3.2
The unit does not vibrate ............................................................................................... 11
3.2.1
No ringing sound ..............................................................................................................1
3.2.2
3.3
.............................................................................................................................13
3.3.1
the screen .....................................................................................................................................13
3.3.2
charged .........................................................................................................................................14
3.4
The keypad does not work normally ............................................................................15
3.4.1
3.4.2
The keypad backlight is inactive ...................................................................................16
3.5
3.5.1
3.5.2
3.6
RADIOFREQUENCY (RF).........................................................................................................20
4
4.1
4.2
4.2.1
AFC calibration ................................................................................................................21
4.2.2
Rx path loss........................................................................................................................22
4.2.3
PCL....................................................................................................................................22
4.3
4.3.1
Switch Spectrum and Ramp Mask overrun ...................................................................24
4.3.2
Significant frequency error ................................................................................................25
4.3.3
Significant phase error ......................................................................................................25
4.3.4
Power output problems ..................................................................................................26
5
ASSEMBLY AND DISASSEMBLY OF THE I909...................................................................28
5.1
5.2
5.3

Table of Contents

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Page 3
LENOVO
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909 ............................................................31