Main Unit - Icom IC-M710 Service Manual

10-2 MAIN UNIT

J1
from PA150W PAI
board J4001
J2
from FILTER RX
board J4302
Name MHz V
GND
Q9 24-29.9999 12.5
13.8
Q8 20-23.9999 12.5
8V
Q7 18-19.9999 12.5
BAND
Q6 14-17.9999 12.5
Q9
Q5 10-13.9999 12.5
Q8
Q4 7-9.99999 12.5
Q7
for
Q3 5-6.99999 12.5
BAND Q6
Q2 3-4.99999 12.5
unit Q5
Q1 2-3.99999 12.5
Q4
Q0 0.03-1.9999 12.5
Q3
Q2
Q1
Q0
C637 0.001
L129
J19
100µH
T8 T8(A)
13.6 L137 1µH
L3 R465 22
L5 R466 22 Name MHz V
L2 R467 22
L3 5-6.9999 10
L4 R468 22
L5 10-13.9999 10
L1 R469 22
L2 3-4.9999 10
L6 R470 22
to FILTER L4 7-9.9999 10
L0 R471 22
board J4303
L1 2-2.9999 10
L7 R472 22
L6 14-19.9999 10
GND
L0 0.03-1.9999 10
GND
L7 20-29.9999 10
GND
GND
REF REF
FOR FOR
W1012 J15
KEY L108 560µH KEY
STAT L107 560µH STAT
TUNER 13.6 L106 2943-666663
GND/ANTC L105 2943-666663 ANTC
J20
THS
MF1001
M
R529
VFA-8018 MF-
2.2
J22
L132 100µH
T8
THS
HL L138 EXC-ELDR25C
13.6
13.6
to PA150W
GND
board J4003
GND
GND
ICA ICA
HTP HTP
from REG
board P8002
J32
[EUR-21]
13.6
/from TERMINAL
GND
board J7001
[GEN-21], [GEN-22]
/from LOGIC
J16
unit P2004
L94
13.6
[GEN-23], [EUR-22]
EXC-ELDR25C
13.6 13.6
GND L143
SP EXC-ELDR25C
from LOGIC
unit J2002
SPE R674
1k
LRXD P51
LTXD P50
R675
J23
1k
AFG2
AFGE
from LOGIC
MODE
unit J2003
MOD R798 1k AFG2
AFGE
J9 MOD
13.6
13.6
13.6
CK R680 220 P25
DATA R681 1K P26
STB3 R682 1K P27
DRST R637 1K P47
CON0 R638 1K P46
to PLL/-A
CON1 R639 1K P45
unit J3007
CON2 R640 1K P44
STB1 R683 1K P42
STB2 R684 1K P43
8V
PFSK
GND
GND
PFSK
J3
from PLL/-A 1LO 1LO
unit J3001
2LO
R449 L100 C560
J4
15 2.7µH 0.0047
from PLL/-A 2LO BFO
unit J3002
J5
BFO
from PLL/-A
unit J3003
MAIN UNIT
TX: 7.9V
R2 R4 L116
L1
15 22 100µH
LR-18
Q1
L2 R64
2SC4673
82µH 560
C4 C6 C8
0.0022 0.0012 0.0022
TX: 0.2V
C3
0.0047
8V
3 2
4 1
C10
0.047
D1
L118
MA862
560µH
R412
10k
Name MHz V
R411
10k
B0 0.03-1.9999 12.5
B1 2-2.9999 12.5
B2 3-4.9999 12.5
R413
100 B3 5-6.9999 12.5
B4 7-9.9999 12.5
RL2
B5 10-13.99999 12.5
D89
AHY103
1SS301 B6 14-17.99999 12.5
B7 18-23.99999 12.5
B8 24-29.99999 12.5
C673
100
Q79
R414
DTC114EU
10k
RX:4.0V
R416
22k
Explanatory notes
Q78
C439
T8 2SC4116
10p
D88 VOLTAGE LINE
HSM88ASR
TX LINE
RX LINE
COMMON LINE
13.6
R8
Q72
DTC114EU
B8
SP
R799
10K Q71
DTA114EU
POC2 IC4
TD62783AF
D59
B7 1SS301 18 1
O1 IN1
B6 17 2
O2 IN2
B5 16 3
O3 IN3
B4 15 4
O4 IN4
B3 14 5
O5 IN5
B2 13 6
O6 IN6
B1 12 7
O7 IN7
B0 11 8
O8 IN8
10 9
GND VS
1-8P: 5.2V
11-18P: 12.5V
IC5
TD62783AF
L0 18 1 R828 10k
O1 IN1
L1 17 2 R829 10k
O2 IN2
L2 16 3 R830 10k
O3 IN3
L3 15 4 R831 10k
O4 IN4
L4 14 5 R832 10k
O5 IN5
8V L5 13 6 R833 10k
O6 IN6
L6 12 7 R834 10k
D61
O7 IN7
1SS301
L7 11 8 R835 10k
O8 IN8
10 9
GND VS D62
1SS301
Q138
2SD1619
R824 Q140
R826 DTC114EU
1-8P: 5.2V 560
4.7k
11-18P: 12.5V
Q139
2SC4116
8V
13.6
10 - 2
T8
L49 L50 C14
5.6µH 4.7µH 0.047
2 3 3 2
1 4 4 1
C12 R11
270p 220
D5 D6
MA862 MA862
TX1.1V
B0
L8 L9 C20 C22
4.7µH 3.3µH 0.0027 0.0015
C18
200p
B1
R8
L13 L14 C28 C30
2.2µH 2.2µH 0.0015 0.001
2 3 3 2
1 4 4 1
C26 120p
D7 D8
MA862 MA862
B2
C624 120p
L18 L19 C38
1.5µH 1.5µH 470p
C34 100p C36
560p
R8
T8
B3
L23 L24 C44 C46
1µH 1µH 470p 330p
2 3 3 2
1 4 4 1
C42 56p
D9 D10
MA862 MA862
B4
R8 R8
L28 L29 C52 C54
0.82µH 0.68µH 270p 220p
C50
39p
L142
100µH
Q9 B5
D60
L33 L34 C60 C62
1SS301
0.68µH 0.47µH 270p 180p
Q8 2 3 3 2
Q7 1 4 4 1
C58 47p
Q6 D11 D12
MA862 MA862
Q5
Q4
Q3
Q2
Q1
Q0 B6
L38 L39 C68 C70
0.47µH 0.39µH 180p 150p
C66
22p
13.6
Q0 B7
Q1
D3 L43 L44 C76 C78 D4
Q2
MA77 0.33µH 0.27µH 150p 100p MA77
Q3
Q4
C74
Q5
18p
Q6
Q7
Q8
Q9
B8
MEASUREMENT CONDITIONS
OSCILLOSCOPE: 20 MHz
VOLTMETER : 50KΩ/V
8V
13.6
T8
2LO
L54 L53 L57 L58
100µH 560µH 100µH LR-270
Q3
3SK131
R27
1k
L52
C82
LR-225
0.0047
C559
0.0047
RX: 0.1V
RX: 8.4V
C87 L55 L56
0.0047 1µH 0.68µH
RX: 0.1V
TX: 2.1V
C90 C92
Q2 5p 18p
C80
3SK131
0.047
2 3
C620
1 4
1p
D2
MA862
R25
10k
13.6V
C564
0.0047
D13
R41
MA862
47
3 2
L64
4 1 LS-484B
L62
1.6V C102
0.33µH
47p
0.9V
C101 Q5
47p 2SC4673
L123 L124
0.33µH 0.22µH TX: 4.7V
2 3
1 4
RX: 4.7V
C457 C459
1p 6p
R535
D99
1k
MA862
R8
R71 Q6
L74
470 2SK2171
LS-483A
L73
L71 L72 C137
LR-116
0.22µH 0.27µH 0.1
C131 C133
15p 10p
C618
15p C138 Q7
0.1 2SK2171
R74
47
R72
470
R8
13.6
4.9V
8V
D43
R706
Q21
1SS301 22k
DTC114EU
Q20
Q111
DTC114EU
2SA1586
R707
220
D42
1SS301
D222
1SS301
Q22
DTC114EU
Q129
DTC114EU
8V
C631
C585
4.7
0.1
16
Q0 3
Q0
Q1 14
Q1
Q2 2
Q2
Q3 15 10 R784 1k PA
Q3 A
Q4 1 13 R785 1k PB
Q4 B
Q5 6 12 R786 1k PC
Q5 C
Q6 7 11 R787 1k PD
Q6 D
Q7 4
Q7
Q8 9
Q8
Q9 5
Q9
8
IC31
MC14028BF
A
L130
100µH
T8
L59
R33 C98
LS-463A
39 0.001
TX: 0.1V R36
47k
R790
L60
330
LR-116
TX: 0.1
R765
330
Q4
3SK131
T8
B
R534
1k
C
D
R520
330
L65 L66
LS-484B LR-225
E
FI1b
D52
F
ND433G
G
FI1
FL-120
H
R75 22
L75 L78
LS-254 LS-484B
FI1a
I
TX RF-POWER V
1 1.15
2 2.00
3 3.00
J
R8
K
C683 10
L
R159 15k
Q137
2SC4116
R823
10k
D45 1SS301
Q23
M
2SC4116
R150 4.7k
N
D226
1SS301
RX: 4V
TX: -0.7V
O
P
Q
R
IC131
TA78L05F
5V 1 3
O I S
G
2
Q74
DTA114EU
T
P92
U
P93
V
P60
W
P61
X
P63
Y
Z
5V
a
8V
b
13.6
c
d
e