Voltage Diagram - Icom IC-M73 Service Manual

SECTION 10.

VOLTAGE DIAGRAM

• RF UNIT
TXMS
5V
IC2
1 5
VIN VOUT
2
VSS
3 4
CE NC
XC6221A332MR
IC1
1 16
Fin1 Fin2
2 15
Vcc Vcc
D3
UNLK 3 14
CP1 CP2
4 13
L1SS400 GND GND
5 12
LD SW
SCK 6 11
CLK OSCI
SDATA 7 10
DATA OSCO
PLST 8 9
EN BO
GP214D
X1
CR-766
R4 C3 C19
FCON
27P
47k 120P
1 L1
2NDLO
C12
6.8U
3.84V
TEMPV
R12
Q3
2SK880
10k
LOINV
CP1
LV
• MIC UNIT
J416
1
1 4
AFOUT
2
3
2 3
4
EP451 MMZ1005Y102CT
SP
EP452
EXDETO EXDET
MMZ1005Y102CT
EP454
EXMICO EXTMIC
MMZ1005Y102CT
EP458
GNDO
MMZ1005Y102CT
5V
L20
1
82N
2
R7
3
4
47k
L22 C32
R22 82N 2P
L21 C37
2.7U 1P
4.7k
LDTC144EE
Q21
Q20
2SC4226
Q22
2SC4226
D22
HVB350BYPTL
R5V
TX:0.00V
RX:2.45V
C159
0.01
FI151 FI150
FL-363 FL-368
R153 R152
C156
Q151
2SC4215
0.001 1k 820
5V
J415
EXDET AFOUT
1 2
EXTMIC
3 4
5 6
10 - 1
TX:2.72V TX:3.27V
RX:2.80V RX:3.33V
T5V
TX:0.69V
RX:1.29V
C54
C40
Q23
15P 15P
2SC4215
C39
Q24
HVD144A
C51
2SC4215 Q50
6P
KTC3770U
D50 22P
TX:1.44V
C43
RX:0.00V
22P
C42
Q25
2SC4215
3P R65
Q100
150k
LDTC144EE
R230
33k
39k L26 C122
82N 0.01
R121
TX:0.00V
RX:2.63V TX:0.00V
RX:4.12V
TX:0.00V
RX:1.12V
Q150 C116 C113 C109
3SK293
2P 0.75P 0.001
TX:4.60V
RX:0.00V
EP3
EP2
MPZ1608S221A
MPZ1608S221A
LDTA144EE
Q351
L56 L57 C72
6.8N 20N 0.001
C65 C225
100P 6P
Q54
L51
RD01MUS2
RD07MUS2B
Q53
82N
R68
C58
0.1 100
1k R382
R67
2.7k
R73
R69
100k
5
1 NJM2125F
15k
4
3
IC50
2
R381
10k
5W:1.70V
1W:1.16V
TX:0.00V
RX:3.00V
*C101 *C98 C94
5P
Q90
3SK294
5.00V
J101
1 2
VCC
3 4
T5VS
5 6
TCON/LOW
7 8
5V TXMS
9 10
POW PCON
11 12
2NDLO TDETV
13 14
PTTIN FCON
15 16
SCK
17 18
SQL MODCO
19 20
SDATA LOINV
21 22
UNLK
23 24
PLST
25 26
TEMPV
27 28
IF MOD
29 30
*: Refer to the PARTS LIST for the value and name of component.
VCC
T5V
ANT
1SV307
L80 C74 D52 C80 L81 L82
45.3N 0.001 0.001 24N 27.2N
C84
11P
C89
7P
5W:0.98V
1W:0.17V
100k
R81
L90
45.3N
4.66V
Q222
Q480
L2SA1576AS
RSQ035P03TR
CP241
R224
CP240
47k
R225
10k