LG LG9200 Service Manual page 80

RX Part Trouble Shooting(4)
2. Check SAW Filter circuit
A1
A2
➀ Check SAW Filter Input power(A1, B1)
➁ Check SAW Filter Output power(A2, B2)
• GSM Insertion loss ~-2.5dB
• PCS Insertion loss ~-3dB
➂ If checked insertion loss is too big, check matching circuit or change SAW Filter.
B1
B2
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4. TROUBLE SHOOTING
L511 5.6nH
FL502
3
EFCH881MTCA1 2
L505 O1 G1
IN
NA
O2 G2
4 5
L512 5.6nH
L513 3.3nH
FL501
3
EFCH1960TCA1 2
O1 G1
L506
IN
NA
O2 G2
4 5
L514 3.3nH
1
1