Teclast X21, Service Manual

Page: 20 / 76

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XTA L2
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PD LF
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PH LF
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RF I2
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Figure 3.2.2.1 FM module circuit schematic diagram
C1, C2, C3, C4, L1 is the antenna input matching circuit of FM module; variable capacitance diode
D1, D2 and winding inductor is the frequence selection tuning circuit in FM module. The control of FM
adopts IIC bus control means, 9 and 10 of TEA5767 are two control input ends.
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