Block Diagram - Icom IC-V8 Service Manual

SECTION 11

BLOCK DIAGRAM

J5
OPTIONAL
MIC, AF, PTT
UNIT
S801
DICK
UP
E
DIUD
DN
TP70N00E2015
Q17: UN911F D
PTT
PTT
SELECT
CONT
PTT
MC1: KUC3523
MIC
PTT
SW5V
OPT
MIC
MIC JACK
J2: HSJ1122
VCC
Q16: XP6501
AF
Q15: 2SB1132
REG
CHASSIS UNIT
IC5: TA7368F
AF
AMP
SP1: SDRS-3650P
J3: HSJ1456
Q31: DTC144TU
AFOUT
SP JACK
D27: RB706F
SP
CLONE
BUFF
VCC
GND
IC12: S-81350
CPU5
BATT
REG
X1: CR-659
21.250 MHz
Q51: DTC144EU
R5 D37: MA2S077
Q59: 2SC4116
REF.
OSC
FRQCON
D7:
PLL
IC1: LV2105V
HVC376B IC
DTC
REF.
ADJ.
DEV
21.250 MHz
FC
DTC
LPF
SW5V
SQLIN
IC10 (5, 6, 7, 8)
MIX, NOISE AMP
D/A
M62363FP
DET IF AMP, FM DET
S DET, OSC
SQL SW, AF FIL
CERAMIC
BPF
FI2: SFPC450E
450 kHz
F IC3B:NJM12902
OPTION
SELECT
C IC3C: NJM12902
MIC PRE
HPF
SELECT ENPHA
IC10 (4): M62363FP
D/A
T5 R5 PS5
Q21: 2SA1576 Q54: 2SA1576
Q22: 2SA1576
T5 R5 PS5
REG REG REG
SW5
REG
Q55: 2SB1132
Q57: XP1501
D39: MA2S111
11 - 1
VCO
SHIFT
VCO5 VCO5
D38: HVU350B
Q50: UMX5 Q6: 2SC4406 Q4: 2SC4406
VCO
LO
LOOP
BUFF
AMP
FIL
VCO5
Q5: 2SC4406
BUFF
Q58:
XP4601
SW5V
LOOP
Q34: 2SK1069
SW
DC LVIN
AMP
X3: CDBCA450CX24
R5
FI1: FL-298
FI3: FL-298
IF
BPF
AMP
IC2: TA31136FN
Q14: 2SC4406
21.700 MHz
Q53: XP4601
DET
AF1
HPF
MOD3
IC3D: NJM12902
ANALOG SWICH
AF2
/MOD2
LPF
MOD1
MIC
AMP
Q38: DTC144EU
CTCSS
AFON
VCO5 SW5V
Q11: XP4601
VCO5
REG
SW5 PCON
CONT
Q56: UN9213
MAIN UNIT
T5 VCC VCC
D3: MA77
Q3: 2SC5085 Q2:2SK3475 Q1:2SK3476
D4: MA77
PWR
TX/RX PRE
DRIVE
SW DRIVE AMP
AMP
PS5
APC
LPF
Q37 : DTA144EU CTRL
IC3A: NJM12902
TXC
R5
D11: HVU350B
D12: HVU350B
D9 : HVU350B
Q12: 3SK274
RF
BPF BPF
AMP
Q13: 3SK274
TONE
FIL
SW5V
CPU
TEMP
TEMP. IC8: HD6433876B49H
SENS.
CTCC
DTCS
LPF
SW
TONE
EEPROM
IC7: BR24C16FV
LED
Q25: 2SC4116
SW
IC11: S-80942
DS2: LNJ310M6URA
DS3: LNJ310M6URA
VCC
ANT
D1: MA77
D2: MA77
D8: MA77
ANT
LPF LPF
SW
D32: RB706F
D33: RB706F D50: MA728
PWR
LIMIT
DET
SW5V
IC10 (1–3)
M62363FP
D/A
Q43: DTC144EU
CSHIFT
CLOCK
SHIFT
X2: CR-663
9.2 MHz
LCD
INITIAL /KEY MATRIX
D40–D49: MA2S111
R349: 100k
COMMON LINE
RESET
RX LINE
TX LINE
DATA