Icom IC-F4003 - MAIN-A UNIT (BOTTOM VIEW)

2 - 2
CLONE BUFFER
(Q81, D51)
TUNED BPF
(D24, D26)
• MAIN-A UNIT
(BOTTOM VIEW)
DRIVE AMP
(Q2)
POWER AMP
(Q1)
PRE-DRIVE AMP
(Q3)
PRE-AMP
(Q4)
RF AMP
(Q22)
RESET IC
(IC53)
EEPROM
(IC52)
AF AMP
(IC55)
IF DEMODULATOR IC
(IC3)
XTAL BPF
(FI1)
AGC CTRL
(Q21)
S5 LINE REGULATOR
(Q71)
RIPPLE FILTER
(Q15)
R5 LINE REGULATOR
(Q72)
1ST IF MIXER
(Q23)
POWER CTRL
(Q63)
CPU
(IC51)
D/A CONVERTER
(IC57)
BUFFER
(IC60)
BUFFER
(Q9)
+5V LINE REGULATOR
(Q74)