Icom ID-31A Service Manual page 8
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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
RF AMP
(Q47)
1ST IF MIXER
(Q46)
1ST IF FILTER
(FI3)
AF POWER AMP
(IC2)
CHARGING LINE DRIVER
(Q6)
IF IC
(IC13)
AF LINE SW
(IC8)
TONE FILTER
(Q31)
AF POWER AMP
REGULATOR
(Q16)
(BOTTOM VIEW)
2 - 4
TX POWER SETTING
VOLTAGE BUFFER
(IC14)
BPF TUNING VOLTAGE
BUFFER
(IC12)
PLL
(IC6)
+4 V REGULATOR
(IC3)
STEP-DOWN CONVERTER
(IC4)
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