Icom IC-F1810 Service Manual

2 - 1
SECTION 2 INSIDE VIEWS
•
Bottom view
•
MAIN UNIT
Top view
Digital CPU (IC20:
HD64F2239TE16
for IC-1721D/1821D
only)
PLL IC
(IC4: LMX2352TM)
APC circuit
(IC37
: TA75S01F)
Mi
xer circuit
Base band IC
(IC2
: AK2346)
D/A co
nverter
(IC8: M62364FP)
+5V regulator
(Q31: 2SB1132)
AF amplifier
(IC38: LA4425A)
D/A converter
(IC30: M62334PP)
RX/TX VCO
circuit
IF amplifier
(Q6: 2SC4215)
Power amplifier
IC29:
S-AV32 for
IC-F1721/D,
F1821/D
S-AV33 for
IC-F1710,
F1810
DTMF decoder
(IC6
: LC7382M)
FM IF IC
(IC12
: TA31136FN)
RF amplifier
(Q24: 3SK293)
YGR amplifier
(Q23: 2SC3356)
Re
ference crystal
oscillator
(X2: CR-794 15.3 MHz)
APC circuit
VCO
switch circuit
(Q17: XP1214,
Q18: DTC144EU)
Low-pass filter
(IC1: NJM129024)
A/D co
nverter (IC16: AD7476ARTZ for IC-F1721D/IC-F1821D only)
Digital DSP
(IC41
:
TMS320VC5416PGE120 for IC-F1721D/IC-F1821D only)
MAIN CPU
(IC23: HD64F2268F)
+8V regulator
(IC36
: TA7808F)
T8V regulator
(Q34
: 2SD1664)
Power switch
(Q42: 2SJ377)
Ceramic filter
(FI1: CFWM450E
for wide)
Ce
ramic filter
(FI2: CFWM450G
for narrow)

Icom IC-F1810 Specifications

General

Brand	Icom
Model	IC-F1810
Category	Transceiver
Language	English