Icom IC-2300H Service Manual Addendum page 38

• MAIN UNIT (1/2)
R10
Q2
100K
L2SC4081
T8C
SHIFT
C;4.8V
C3
1
REF 15.3MHz
C13
0.001
C4
VCC OUT
1
4 3
VCON GND
1 2
X1
CR-875
R4
1.5M
*3 MULTI
C17
Q1
6P
C9
2SC4116
100P
REFMOD
FC
MOD
LVIN
J1
NOIS NOIS SD
2 1
GND DETO
4 3
IDET IDET SW5V
6 5
SW5V SW5V
8 7
GND GND
10 9
DASTB DASTB EXTCK
12 11
GND MODIN
14 13
UNLK UNLK GND
16 15
GND GND
18 17
OE OE PLLSTB
20 19
PLLCK DATA
22 21
EXTDATA EXTDATA PLLDATA
24 23
EXTSTB EXTSTB +8V
26 25
+8V +8V
28 27
C5V VOLOUT
30 29
LVIN LVIN PWRON
32 31
CLONE CLONE INTSP
34 33
HVIN EXTSP
36 35
T;7.7V
R;0.0V
Q5 T;0.0V
L2SC4081 R;6.7V
Q8
LDTA123YET
Q7
T;6.3V
L2SC4081
R;0.0V
Q6
L2SC4081
R27
22K
PLL
IC1
MB15A02PFV1-G-BND-ERE1
C24 1 16
OSCIN B
0.001
2 15
OSCOUT P
3 14
VP FOUT
4 13
VCC NC
5 12
DO FC
6 11
GND LE
7 10
LD DATA
8 9
FIN CLOCK
C37
47P
R34
EXB28V103J
D3
L1SS400
FI1
D5
C310 C311
LT450FW
1SS390
0.1 0.1
I O
FI2 D6
LTW450HT 1SS390
C313 C312
I O
0.1 0.1
Q4
LDTA144EE
DETO
FM;4.8V
FM-N;0.0V
FM;0.0V
FM-N;4.4V
MP5
3179
R50
L4
220
MLG1608S
R44 R48
1.2K 1.2K
C87
0.001
C89
6P
L3
MLG1608S
R46
1K
Q10 R58
2SK880 100K
R63
470K
C79
R61
1
120K
Q11
LDTC144EE
C81
0.01
X2
JTBM450CX24
R53
220
R38
1.5K
R47
3.3K
IC3
C66
C49
AA32416A
0.1
0.1
1 16
OSCI MIXI
2 15
OSCO GND
C50 3 14
MIXO NDO
0.1 4 13
VCC NDET
5 12
IFIN RSSI
6 11
DEC IFOUT
7 10
FILO QUAD
8 9
FILI AFO
R41
C52 470
330P
R40
C53 C308
22K
330P 270P
C90
0.001
IC2
CD4094BPWR
1 16
STR V+
2 15
D OE
3 14
CLK Q5_
4 13
Q1_ Q6_
5 12
Q2_ Q7_
6 11
Q3_ Q8
7 10
Q4_ Q'S
8 9
GND QS
C;6.8V
VCOV
RX VCO
IC10
C125
UPC2709TB
0.001
3 4
C113 GND OUT
Q14 2 5
0.001 GND GND
2SC4226 1 6
IN VCC
Q17
2SC4228
Q13
2SC4226
Q34
R209
LDTC144EE
100K
Q35
PA_ON;13.6V
LN2306LT
PA_OFF;0.0V
R210
Q9
10K
LDTC144EE
IC7
C141 LA4425A
0.47
5
1
R216
4
10K
2
3
PA_ON;0.0V
PA_OFF;13.6V
Q38 R215
Q36 Q37
LDTC114EE 100K LN2306LT
LN2306LT
R92
Q20 C333
R90
27K
2SC4213 0.022
330K
R79
5.6K
IC5
R2A20178
1 18
VIN2 VIN7
2 17
VDD GND
3 16
LD RESET
4 15
CLK VDAREF2
5 14
DI VDAREF1
6 13
VIN3 VIN6
*: Refer to the PARTS LIST for the value and name of component.
10 - 2
T8V
D13
HVD144A
J2
1
2
C319
220
C164
1000
R233
15K