Icom IC-F521 - Page 5

SECTION 2 INSIDE VIEW
2 - 1
Power module
8V regurator
(IC9: TA7808F)
AF power amplifier
(IC8: LA4425A)
CPU 5V regurator*
(IC10: AN78L05M)
VCO circuit
CPU*
(IC20: HD64F2268TF)
Antenna switch/
Low-pass filter circuits
1st mixer*
(Q3: 3SK272)
2nd IF filter
(FI2: ALFYM450F=K [N/W]
CFWLB450KGFA
-B0 [N/M])
FM IF IC
(IC1: TA31136FN)
D/A converter
(IC6: M62364FP)
Referance crystal osillator
(X2: CR-664A 15.3 MHz)
PLL IC
(IC4: TB31256FL)
*Located under side of the point.
1st IF filter
(FI1: FL-335 46.35 MHz)
IC3: RA30H1317M-21 [25W]
RA60H1317M-21 [50W]