Icom IC-PCR1500 Service Manual
Also see for IC-R2500: Price listInstruction manualInstruction manual
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4 - 64-4 POWER SUPPLY CIRCUITSVOLTAGE LINE DESTINATION VOLTAGE LINE DESTINATIONHV Same voltage as the connected power supply. AP5V Optional UT-122.AF+8V AF power amplifi er (IC12). OP5V Optional UT-108/UT-118.L5V Electric volume (IC17), tone filter (IC21), AF switch(IC4, IC23), etc. A+5V MAIN-A UNIT.+33V Loop fi lter (MAIN-A/B UNITS; Q35, Q36). A+8VUSB3.3V USB HUB (IC20, IC32), USB audio IC (IC16). –5V AGC amplifi er (MAIN UNIT; IC25).VOLTAGE LINE DESTINATIONDPLL3.3V Down converter circuit; PLL IC (IC4).D3.3V Down converter circuit; mixer (IC6), RF ampli-fi er (IC15), etc.PLL3.3V 1st and 2nd PLL circuits; PLL IC (IC10, IC13).5V Divider (IC11), reference oscillator (X1), etc.DVCO5V Down converter circuit; VCO (Q19, D43), buf-fer (Q14), etc.VOLTAGE LINE DESTINATIONBPLL3.3V 1st and 2nd PLL circuits; PLL IC (IC10, IC13).B1/2 5V Divider (IC11).*PCR2500 only |
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