Sharp GX30 Service Manual - Page 87

CONFIDENTIAL GX30 BS2 BS3 1,2 4 IC805 5 NL17SZ32XV5T2 LOGIC Tx VCO LOOP GSM850 824.2 to 848.8 MHz VBAT BS2 FILTER 12 GSM900 880.2 to 914.8 MHz DCS1800 1710.2 to 1784.8 MHz 3,6,13 PCS1900 1850.2 to 1909.8 MHz 17 2 IC802 16 PF08141B BS1 BS2 BS3 BS4 PA MODULE 19 18 12 1800 / 1900 PD RF Synthesizer 0deg LNA ft(1/2) LNA 0deg ft(1/2) LNA PA 17 1 7 850 / 900 4,5,8,9,10,11,14, 15,19,20,21,22,23 APC AERIAL RFVCO Tx GSM850 3616.8 to 3715.2 MHz GSM900 3848.8 to 3979.2 MHz 15 DCS1800 3580.4 to 3729.6 MHz PCS1900 3860.4 to 3979.6 MHz Rx GSM850 3476.8 to 3575.2 MHz GSM900 3700.8 to 3839.2 MHz DCS1800 3610.4 to 3759.6 MHz PCS1900 3860.4 to 3979.6 MHz 38,39 LOOP FILTER 3,7,8,16 FL901 SAW FILTER 12 4 1 GSM850 Rx FL904 9 10 3 10 1 MATCHING 3,8 2,5 DEVICE 95 7 62 9 GSM900 Rx 1 7 3 FL902 SAW FILTER 6 DCS Rx 13 11 6,10,12,14 RF CONNECTOR 2 91 J801 4 5 FL803 3,4 RF SWITCH GSM850 Band; Tx: 824.2 to 848.8 MHz Rx: 869.2 to 893.8 MHz GSM900 Band; Tx: 880.2 to 914.8 MHz Rx: 925.2 to 959.8 MHz DCS1800 Band; Tx: 1710.2 to 1784.8 MHz Rx: 1805.2 to 1879.8 MHz 6 4 5,7,8,10 PCS1900 Band; Tx: 1850.2 to 1909.8 MHz Rx: 1930.2 to 1989.8 MHz 4 3 1 PCS Rx 3 4 FL903 2,5 SAW FILTER Figure 4 RF BLOCK DIAGRAM (2/2) 4 - 4