Icom VHF Marine Transceiver IC-M88 - Manual (Page 34)

11 - 1
SECTION 11 VOLTAGE DIAGRAM
R801
10k-A
W801
W801
W801
1
2
3
W802
W802
1
2
1
2
3
FHV
VCC
VOLIN
VOLO
GND
to LOGIC
J411
J281
1
2
F281
ERBFE3R00U
CP281
CP282
CP283
CP284
HV
HV
R323
10k
R241
6.8k C242
0.001
R239 220k
C7
0.01
R223
150
R6
10k
C251
0.01
Q322
2SA1588
IC231 TA31136FN
OSCIN
1
OSCOUT
2
MIXOUT
3
VCC
4
IFIN
5
DEC
6
FILOUT
7
FILIN
8
AFOUT 9
QUAD
10
IFOUT 11
RSSI 12
N-DET
13
N-REC 14
GND 15
MIXIN
16
C232
100p
C215
0.001
R231
3.3k
FI231
CFWM450E
1 2
3 4 5
R4
NTCG16 4LH 473KT
R15
1.2k
C252
0.01
Q321
2SA1588
C5
0.1
Q323
2SA1588
C13
47p
R325
10k
C9
9p D2
HVC362
C8
100p
C323
0.01
R11
47k
R240
47k
C322
0.01
C240
0.001
R321
10k
C244
0.001
R242
390
R232
47
X1
CR-664A 15.300MHz
C238
120p
C231
0.001
R5
100k
R326
4.7k
C237
120p
C324
0.01
X231
CDBC450CX24
R251
470
R13
82k
R14
47k C11
100p
C12
100p D3
MA2S111
Q2
2SC4215
IC1 MB15A02PFV-1
OSCIN
1 OSCOUT
2 VP
3 VCC
4 DO
5
GND
6
LD
7 FIN
8
CLOCK
9
DATA
10
LE
11
FC
12
NC
13
FOUT
14
P
15
B
16
R7
27k R10
470k R8
120k
R2
22
D1
MA2S111
C17
1.5
C19
0.001
Q3
2SK880
R213
1.5k
R214
470
R215
120k
R216
680
Q211
2SC4215
C216
0.01
FI232
CFWM450G
12
3 5
Q1
2SK1829
C6
2.2
C217
100p
D232
DAN222
D231
DAN222
C221
10p
C222
0.01 R221
680k
R222
1.2k
L221
1.0
µH
Q221
2SC4116
C223
18p
C224
2p
C225
18p
C226
10p
L222
1.0
µH
C236
0.01
R238
15k
R235
22k R234
22k
R237
12k
R236 4.7
R233
15k
Q231
DTA144EU
C234
0.1 C233
0.1 C235
0.1
C241
0.1
C4
47p C3
0.001 C2
0.1
L34
92nH C51
0.75p
C52
6p
C53
22p
C55
470p
R21
10k
R19
470
C20
0.001
C34
0.001 C35
470p
R37
100k
R36
47k
R35
180k
D39
1SV245
C243
0.001
C1
0.1
R1
150k
R12
47
R20
1k
R9
10k
C10
0.1
R16
56
C14
0.001
R22
8.2k C21
0.001
CP1
C247
0.001
IC341
BU4094BCFV
1
STR
2
D 3
CLK
4
Q1
5
Q2 6
Q3
7
Q4 8
VSS
9
QS
10
QS
11
Q8
12
Q7
13
Q6
14
Q5
15
QE
16
VDD
C341
0.01
R243
4.7
L32
67nH
R31
10
W40
L31
0.47
µH
C32
9p
L33
0.47
µH
R34
10
C33
39p
R17
100
R3 1k
C325
22
R245
47k
R246
47k
R244
2.2k
C246
470p
C245
0.001
Q232
2SC5107
R336
100k
C333
0.001
R322
4.7k
IC381
FX214LG X/CLK
1
X 2
SDIN 3
NC
4
NC
5
NC
6
NC
7
P/S
8
NC
9
SCIN 10
LD/LTH
11
AT 12
VSS 13
IC 14
RXOUT 15
TXOUT
16
VBIAS
17
RXIN
18
HFO
19
HBMI
20
LBMI
21
TXIN
22
LFO/P
23
VDD
24
C381
1
C383
1
C384
0.1
C397
1
C387
1
C388
0.01
R383
100k
C382
1
R384
18k
IC382
NJM2904V
1
2
3
4
5
6
7
8
C396
1
C389
0.01 R386
100k
C385
0.1 R381
10k
C386
1 R385
3.3k
R382
56k
C16
4.7
IC331 EW-460
I O
G
R39
100k
C36
1 R38
47k
C48
10
L47
0.47
µH
C49
22p
R32
1k
D38
HVC350B
D37
HVC350B
Q47 XP6501
1
2
3 4
5
6
R47
2.2k
D32
HVC350B
D31
HVC350B
D36
HVC350B
D35
HVC350B
R33
1k
D34
HVC350B
D33
HVC350B
R18
1k
C47
10
L51
92nH
EP2
EP3
C239
4.7
C326
4.7
C327
4.7
C37
1.5p
2nd_Lo
2nd_Lo
IF5V
T5V
T5V
T5V
REFIN
PLL5V
RSSIV
RSSIV
EXOE
DTCON
FRCON
VCC
ATTS
TXOUT RXIN
TXIN
TXIN
VSSTB
SMICO
SMICO
MICO
MICO
SCLK
SCLK
SCLK
SCLK
LVINV
LVINV
LVINV
PLSTB
UNLKI
TXMS
VCOS
VCOS
VCOS
VCOS
CTFIS
DETMS
R5V
R5V
R5V
R5V
PLLIN
LVINV
R5V
SRXMS
SDATA
SDATA
SDATA
SDATA
DET
A
G3V
AG3V
V5FV
PLLIN
V5V
S5V
TEMPV
1 MHZ
W/NS
W/NS
TDETV
CKSIS
CKSIS
M5V M5V
M5V
T5VS T5VS
R5VS
V5VS
S5V S5V
S5V
S5V
S5V
S5V
S5V
S5V
J351
to
LOGIC
UNIT
J401
37
38
BEEPO
RSSIV
NOISV
EXSTB
EXOE
VCC
VCC
WDECV
VSSTB
SMICO
MICO
SCLK
LVINV
PLSTB
DASTB
UNLKI
MODIN
CDTENC
BTYPE
CDECV
SDATA
VOLIN
GND
GND
GND
GND
GND
GND
GND
TEMPV
W/NS
TDETV
M5V
T5VS
R5VS
V5VS
S5V
SD
ATA
SCLK
CTFIS
SRXMS DETMS
A
TTS
TXMS
SQCON SQLOUT
SCLK
DA5V
DASTB
MODIN
CDTENC
SDATA
DET
TEMPV
LVINV
UNLKI
UNLKI
RSSIV
NOISV NOISV
NOISV
RSSIV
TDETV TDETV
VCC
VCC
T5V
T5V
V5V
V5V
T5VS
R5VS
V5VS
V5VS
R5VS
T5VS
BTYPE
BTYPE BTYPE
EXSTB
EXSTB EXSTB
M5V
M5V
VOLIN
SMICO
MICO
CDECV
VSSTB
EXOE
WDECV
BEEPO
W/NS
PLSTB
PLSTB
VCC
DO1
EXOE
VSSTB
VSSTB
RXOUT
RXIN
DET
OUT
DETIN
A
B
DO2
V5FV
T5V
VCC
DO1
MOCON
VCOS
31.05 MHz
RSSIV
PLLIN
R5V
CKSIS
C
1 MHZ
VR UNIT
S5V
S5V
S5V
S5V
MAIN UNIT
M5V
SCLK
SDATA SDATA
SD
ATA
SCLK
RSSIV
NOISV
BATTERY
S5V
S5V
S5V
VCO CASE
4
VCC
FHV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
C802
0.001
Common Transmit
Receive Power supply
LOCK: 4.85V
UNLK: 0.50V
TX: 0.0V
RX: 3.54V
4.78V
4.89V
15.3 MHz: 1.40 Vp-p
30.6 MHz: 0.2 Vp-p
TX: 0.0V
RX: 3.78V
WIDE: 0.0V
NARROW: 4.98V
TX: 4.87V
RX: 0.0V
TX: 0.0V
RX: 4.96V
4.92V