Icom IC-PCR1500 Service Manual page 9

• MAIN-A UNIT
TOP VIEW
1st VCO circuits
2nd VCO circuits
DDS REF 8V regulator
(Q90: XP4311)
DDS circuits
BOTTOM VIEW
DVCO +5V regulator
(Q78: UNR9111)
DPLL 3.3V regulator
(IC2: S-812C33AMC)
1st mixer
(IC14: SPM5001)
+5V regulator
(Q23: UNR9111)
1st IF amplifier
(Q44: 3SK131)
2nd mixer
(IC19: TA4107F)
IF IC (Band scope)
(IC20: TA31136)
2nd IF amplifier
(Q66: 3SK131)
AGC amplifier
(Q58: 2SC4617)
WFM IF IC
(IC16: LA1145M)
RF circuits
D3.3V regulator (Q10: UNR9111)
ATT circuits
NFM, FM, IF IC (IC24: TA31136)
2 - 2
Down converter circuits
Buffer
(Q60: 2SC4617)
Noise blanker amplifier
(Q68: 2SK882)
APCO5V regulator
(Q77: 2SA1832)
HF band RF amplifier
(Q22: 2SC5226)
HF 8V regulator
(Q25: XP4311)
PLL 3.3V regulator
(IC9: S-812C33AMC)
DDSREF 8V regulator
(D120: DAN222)
RSSI meter amplifier
(IC25: NJM2904V, D80: 1SS400)
SSB decoder
(IC23: TA4101F)
AM detecter circuits