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2 - 1
SECTION 2
INSIDE VIEWS
• MAIN UNIT
Power amplifier
(Q1: 2SK2974)
Antenna swtching circuit
(D1, D2, D8: MA77)
TOP VIEW
BOTTOM VIEW
RF amplifier
(Q12: 3SK293)
VCO circuit
1st mixer
Q13: 3SK239A [OTHER]
3SK320
B
Low-pass filter circuit
TX/RX switch
(D3, D4: MA77)
Mic amplifier circuit
APC
IC3A: NJM2902V
Q37: DTA144EU
FM IF IC
(IC2: TA31136FN(D))
CPU
(IC8: HD6433876B50H)
EEPROM
IC7: HN58X2432TI [OTHER]
HN58X2464TI
H
D/A converter
(IC10: M62363FP-650C)
PLL reference oscillator
X1: CR-664A 15.3 MHz [OTHER]
CR-671A 15.3 MHz
A
,
D
Crystal filter
FI1: FL-311 [OTHER]
FL-312
C
FL-333
F
,
G
FL-334
E
PLL IC
(IC1:
µ
PD3140GS)
IF amplifier
(Q14: 2SC4215 O)
(
)
(
)
(
)
(
)
(
)
A
: W/N-type
B
: ETS/CEPT version
C
: W-type of [GEN]
D
: EIA/TIA version
E
: W-type of ETS/CEPT version
F
: N-type of ETS/CEPT version
G
: M (20 kHz)-type
H
: 100 channel version
Summary of Contents for IC-F3GS
Page 1: ...SERVICE MANUAL VHF FM TRANSCEIVERS ...
Page 39: ......
Page 40: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13713IZ C1V q 2000 Icom Inc ...
Page 41: ...SERVICE MANUAL UHF FM TRANSCEIVERS ...
Page 82: ......
Page 83: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13713IZ C1U 1 2000 Icom Inc ...