Icom ID-31A

2 - 3
• MAIN UNIT
(TOP VIEW)
CHARGING LINE SW
(Q7)
DISCRIMINATOR
(X2)
AF FILTER
(IC9)
POWER AMP
(Q45)
VCC LINE SW
(Q8)
DRIVE AMP
(Q41)
YGR
(Q39)
LOCK VOLTAGE BUFFER
(Q26)
D/A CONVERTER
(IC11)
+5 V REGULATOR
(IC15)
+3 V REGULATOR
(IC10)
2ND IF FILTER (For FM mode)
(FI2)
2ND IF FILTER
(For DV/FM-N mode)
(FI1)
REFERENCE FREQUENCY
OSCILLATOR
(X1)
VCC LINE SW
(Q2)
CURRENT DETECTION IC
(IC5)
+5 V REGULATOR
(IC1)