Icom IC-91A - Page 5

SECTION 2 INSIDE VIEWS
2 - 1
• MAIN UNIT (TOP VIEW) • MAIN UNIT (BOTTOM VIEW)
• UT-121
(Optional Product ; CODEC UNIT for IC-91AD)
(TOP VIEW)
• UT-121
(Optional Product ; CODEC UNIT for IC-91AD)
(BOTTOM VIEW)
• LOGIC UNIT
• RF UNIT (TOP VIEW) • RF UNIT (BOTTOM VIEW)
DC switch
Q1000: HAT1026
D1000: MA2S728
D1001: RB060
TX power amplifier
(Q100: RD01MUS1)
VCO UNIT
APC amplifier
(IC150: NJM3404)
A_BAND 1st IF mixer
(IC900: µPC2757TB)
2nd IF filters
(FI100, FI200: CFW450E)
Mode switch
(IC700: CD4066)
A_BAND PLL IC
(IC400: MB15E03SLPFV1)
A_BAND FM IF IC
(IC100: TA31136FNG)
B_BAND FM IF IC
(IC200: TA31136FNG)
A_BAND 2nd IF filter
(FI2: SFECV13.35MAS)
B_BAND 1st IF filter
(FI50: FL-335)
Clock oscillator for
IC101 / IC350
(X100: CR-820)
Clock oscillator for
IC202
(X200: CR-821)

GMSK modem IC
(IC202: CMX589AD5)
Linear codec IC
(IC350: AD73311ARSZ)
AMBE audio codec IC
(IC101: AMBE-2020)
ALC amplifier
(IC300: AN6123MS)
AF power amplifier
(IC550: NJM2070M)
Reset IC
(IC100: R1150H022D)
Reference
frequency oscillator
(X1: CR-774)
RS-232C interface
(IC52: MAX3221IPWR)
CPU
(IC1:
HD64F2238RTF13V )
D/A converter
(IC303: M62364FP)