Main Unit - Icom IC-703 Service Manual

• MAIN UNIT

YGR amplifier YGR amplifier
(IC101: PC2709T) (IC101: PC2709T)
1st IF filter 1st IF filter
(FI851: FL-348) (FI851: FL-348)
1st IF amplifier 1st IF amplifier
(Q811: 2SK508) (Q811: 2SK508)
1st mixer 1st mixer
(D701: HSB88WS) (D701: HSB88WS)
VCO circuit VCO circuit
PLL IC * PLL IC
(IC9101: MC145170D2R2) (IC9101: MC145170D2R2)
UT-106 UT-106
Main CPU Main CPU
(IC5901: M30620MCM-1W4GP) (IC5901: M30620FCMGP)
Reset IC Reset IC
(IC5981: R3112N281A) (IC5981: R3112N281A)
* Located under side of the point
2 - 2
2nd mixer 2nd mixer
(D901: HSB88WS) (D901: HSB88WS)
Noise blancer circuit Noise blancer circuit
2nd IF amplifier 2nd IF amplifier
(Q1401: 3SK294) (Q1401: 3SK294)
2nd IF filter 2nd IF filter
(FI1501: CFWS455E) (FI1501: CFWS455E)
DDS IC DDS IC
(IC9001: AD9833BRM) (IC9001: AD9833BRM)
PLL IC * PLL IC
(IC9601: LC7153M) (IC9601: LC7153M)
Balanced modulator Balanced modulator
(IC1801: TA4107F) (IC1801: TA4107F)
Automatic gain Automatic gain
control circuit control circuit
A/D converter * A/D converter
(IC5601: BU4052BCF) (IC5601: BU4052BCF)
AF power amplifier * AF power amplifier
(IC7301: TDA7233D) (IC7301: TDA7233D)
D/A converter D/A converter
(IC6501: M62364FP) (IC6501: M62364FP)