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4. TROUBLE SHOOTING
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Only for training and service purposes
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4.3.1 Checking RF Block
The overall flow is as following.
Chart 1 RF Block checking sequence
Start
G
MDM PWR N – Low
Battery Power Okay?
MDME,MSMC okay?
32.768K Clock okay?
19.2M Clock okay?
SIM DET okay?
Is Phone
information okay?
Charge the Battery
Refer to previous page.
Change 32.768 KHz XO
Change 19.2 MHz XO
Check SIM Card
Replace another SIM card to the
phone
Update Modem F/W
Check the CP Board
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Antenna Bar Okay?
Check RF Block
No
Yes