Icom IC-M23 Service Manual page 25

• MAIN UNIT (2/2)
M3V
2.62V
L20
82
IC1
MB15E03SLPFV1-G-BND-E1
SCK
CLK FIN
SDATA 9 8
R8 R22
DAT XFIN
PLSTB 10 7
560 4.7K
LE GND
11 6
PS DO
PS 12 5
ZC VCC
13 4
UNLK
L/F VP
D3
14 3
P OSCO
L1SS400
15 2
R OSCI
16 1
X1
R3 R4
C3
CR-766
10K 47K
220P
FCON
F
C133 IC365
0.001
R47 7
3.9K
R458
R12
4.7K
10K
Q3
R173
L1 C12
2SK1069-4-TL-E
LOINV
1.5K
NLV25T 0.001
CP1
IC170
NJM2591V
1
OSCIN MIXIN
FI170 2
OSCOUT GND
C462
LTM450FW 3
MIXOUT NOISEREC
0.1
4
V+ NOISEDET
5
I O IFIN RSSI
6
C463
DEC IFOUT
7
0.1
FILOUT QUAD
1.94V
8
FILIN AFOUT
C181
TEMPV
R172
0.1
470
DET
R176 C179
1K 270P
R175 C180
27K 270P
SQLO
RSSIV
TX:0.00V TX:2.67V
RX:2.74V RX:0.00V 2.86V
Q221
Q222
L2SA1576AS
L2SA1576AS
R222 R224
47K 47K
R223 R225
10K 10K
Q366
LDTC144EE
TX:2.84V
R7
R6
1 RX:2.86V
470
47K
2
3
4
L21 L22 C32
NLV25T C6342A 1.5P
C37
0.75P
Q20
R23 LDTC144EE
220
Q21
KTC3770U
D20
MA2S077G0 C34
MOD
1.5P
Q22
R25
KTC3770U
100K
D22
HVB350BYPTL-E R462
0
5
6
R170
390
R3V
TX:0.00V
RX:1.20V
16
15
14
C159
13
0.01
12
11
10
9 FI150
R153 R152
C156
FL-368
0.001 1K 1K
Q151
KTC3880S
R93
10K
C H A R G E : 6 . 0 0 V
J601 D601
LRB551V-30
Q225
KTA1664
IC220
R227
NJU7772F03
10K
1 5
VIN VOUT
2
GND
3 4
CTRL NC
Q364
2SJ347
Q224
KTC811U
D360
LRB551V-30
R228
180K
TX:2.25V TX:2.62V
RX:2.31V RX:0.00V
V3V T3V
C40
15P
C39
12P
L51
C54
Q23
Q24 TX:1.35V
15P 82N
2SC4215 2SC4215
RX:0.00V
Q50
C51 KTC3770U
TX:0.58V
22P
RX:0.62V
Q362
C43
LDTC144EE
22P
C42
5P
Q25
2SC4215
TXMS
Q351
LDTA144EE
R65
150K
LOW
Q357
LDTC144EE
R120
2.2K
ELOW
R3V
TX:0.00V
RX:2.57V
L26 C122
82N
0.01
C116 C113
3P 0.75P
Q150
3SK293
TX:0.00V
RX:1.08V
T3V
C H A R G E : 4 . 9 6 V 4 . 7 6 V
Q363
RSQ035P03TR
I O
Q602
G
KTA1664
IC602
NJM2835DL1-05
L56
0.30-0.9-3TR
Q54
L99 L100 L102
C65 C444 C447
RD07MUS2B-T112
47P 56N 0.001 47N 24P 22N
L101
ELJRF
Q53
RD01MUS2
R69
R73
10K
10K
L106
L105
0.30-1.3-5TL
0.30-0.9-3TR
Q55
C57
RD07MUS2B-T112
0.1 C449 L103
T3V
ELJRF
24P
R477
R384 C58 R68
10K
2.2K 0.1 100
R67
120K
R466
10K
5
1
4
3
IC50
Q365
LMV321IDCK
2
LDTA144EE
4.5W:2.21V
R469
1.0W:1.72V
10K
TX:0.00V TX:0.00V
RX:2.71V RX:1.85V
C109
0.001 C98
*C117 2P
C101
6P
Q90
3SK294
R3V
R602
D603
LRB551V-30 1
R628
1
D609
R608
L1SS400
10K
Q606
C609 RSQ035P03TR
0.001
IC601
NJW4100V
1 20
P_CHG Q-CHG
2 19
NFB CS1
3 18
CNT CS2
4 17
GND VS
5 16
NC VREF
6 15
F-CHG V+
7
14
LED-G TDET
8 13
LED-R TH
9 12
C1 TL
10 11
C2 CHG-SW
Q603
LDTC144EE
*: Refer to the PARTS LIST for the value and name of component.
10 - 2
C453 L107 D52 C80 L81
0.001 0.30-1.7-7TL 1SV307 0.001 0.26-1.1-7TR
C74
C72
0.001 C84
0.001
11P
C89
7P
L108
0.30-1.7-7TL
EP10
MPZ1608S221A
4.5W:0.79V
1.0W:0.17V
R81
100K
TDETV
R382
2.7K
R381
10K
C94 C92 L90
5P 47P 0.30-1.7-7TL
Q353
CP300
RSQ035P03TR
Q608
2SJ347
CP240
CP245
Q609
LDTC144TE
D358
LDAN222
Q354
LDTC144EE J602
1
2
PON: 2.99V
POFF:0.00V