LG D686 - GSM Rx Part

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3. TROUBLE SHOOTING

- 54 -

Only for training and service purposes

LGE Internal Use Only

3.3 GSM Rx Part

3.3.1 GSM850/900/DCS/PCS Rx

* There are no Test Points on the IQ Data Line. So It is impossible to check the IQ Data Wave form

Rx TEST SETUP

- BCH :GSM850 / EGSM / DCS / PCS for GSM900

- TCH: GSM850 / EGSM / DCS / PCS for GSM900

- Channel : 190 / 37 / 698 / 661 for GSM 900

- Sector Power : -30 dBm / -33dBm

1. Check

DC Power Supply circuit

START

2. Check MT6162 XO

Re download S/W & Cal

3. Check RF Signal path

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