Icom ID-31A Service Manual page 7
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Also See for ID-31A:
- Instruction manual (80 pages) ,
- Advanced instructions (293 pages) ,
- Quick manual (2 pages)
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• MAIN UNIT
CURRENT DETECTION IC
(IC5)
VCC LINE SW
(Q2)
VCC LINE SW
(Q8)
+5 V REGULATOR
(IC1)
POWER AMP
(Q45)
DRIVE AMP
(Q41)
YGR
(Q39)
LOCK VOLTAGE BUFFER
(Q26)
REFERENCE FREQUENCY
OSCILLATOR
(X1)
D/A CONVERTER
(IC11)
+5 V REGULATOR
(IC15)
+3 V REGULATOR
(IC10)
(TOP VIEW)
2 - 3
2ND IF FILTER (For FM mode)
(FI2)
CHARGING LINE SW
(Q7)
2ND IF FILTER
(For DV/FM-N mode)
(FI1)
DISCRIMINATOR
(X2)
AF FILTER
(IC9)
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