Icom IC-M710RT Service Manual page 64

J4
to
TERMINAL
board
P1
S1
P1 J5
W5
W6
P1 J6
W14 GND
W15
W16 +5
W17 R1O
W18 T1I
W19 RXPC
to
W20 FPON
MAIN
W21 DTRM
unit
W22 GRST
J16
W23 A3DO
W24 GULO
W25 A4DO
W26 RXDO
W27 TXDO
RX:
0.8 Vp-p DC 1.6 V
5 V
POWER
LED
D11
DA221
3.3 V
Q11
2SA1586-GR
3.0 V
2.7 V
IC5
TA75S01F
R48
5 IC4
1 56k
+ 4 NJM311M-TE3
3
R45 - 1 8
GND V+
39k
2 2 7
+IN OUT
3 6
-IN BAL/STB
4 5
V- BAL
RX:
0.4 Vp-p DC 0.8 V
RX:
0.4 Vp-p DC 0.8 V
R86
100
IC7
R70
NJM2902V-TE1
22k
P2 J7
W10 AFG2
R87
to
W11 AFGE
CP2
MAIN
W12 MODE C40
unit
R69 C42 0.022
W13 MOD
J23
R88 15k 0.47 IC7b
IC7a
R84
10
4 5
680 2 7 +
1 - 6
3 -
+
D12 R81
11 1.9 V 1SS355 27k
R82
220k
1.9 V
RX:
0.6 Vp-p DC 1.9 V
COMPLETE VIEW
10 - 2
0.3 sec
3.7 Vp-p
X1
R32 CR-508
1.2k (5.0688 MHz)
CP1
1 48
NC NC
2 47
NC
NC
3 46
NC P2
4 45
SWI ABF
5 44
DI1 P1I
TXDO 6 43
R76 1k
DI2 P2I
RXDO 7 42
R77 1k
DAR1 VDD
8 41
DAR2
IC1 GND
9 40
GND SC-1288 HED
10 39
VDD SIGI
GRST 11 38
R78 1k
CLR SIGO
GULD 12 37
R79 1k
ULO SIGO1
13 36
R39 1k
CHI1 REVR
14 35
DIC1 NC
15 34
NC NC
16 33
NC NC
W3
R38
1k
A4DO
R37
1k
A3DO
IC8 IC9
TC7W74FU TC7W74FU
1 8 1 8
CK VCC CK VCC
2 7 2 7
D PR D PR
3 6 3 6
Q CLR Q CLR
4 5 4 5
GND Q GND Q
C38 C36
R67 R65 R61 R59 R55 R53
0.001 0.001
12k 18k 68k 47k 100k 33k
IC7c IC7d
10 12
8 + 14 +
9 13
- -
R68 R66 R62 R60 R56 R54
56k 100k 2.2M 470k 2.2M 270k
C13
10
Q10 Q9
2SC4116-GR 2SC4116-GR
R29 R27
47k 47k
C14
10
D9
DAN202K
IC2
HD26C32AFP
1 16
INA1 VCC
2 15
ONA2 INB1
3 14
D10
OUTA INB2
DAN202K 4 13
ENABLE OUTB
5 12
OUTC ENABLE
6 11
INC2 OUTD
7 10
INC1 IND2
8 9
GND IND1
R26
47k
D7 D8
DAN202K DAN202K
R25
1k
5
R51
2.7k 1
4
2
3
R52
IC5
22k
TC4S81F
MEASUREMENT CONDITIONS
VOLTMETER: 50 k‰/V
OSCILLOSCOPE: 20 MHz
TX: AG 1.5 kHz 10 mVrms
RX: J3E MODE —60 dBm
J1
SG (GND) 5
CI (RI) 9
ER (DTR) 4
IC3
DS14C232TM 8
CS (CTS)
1 16 SD (TXD) 3
C1+ VCC
2 15 RS (RTS) 7
V+ GND
3 14 RD (RXD) 2
C1- T1O
4 13 DB (DSB) 6
C2+ R1I
5 12 CD (DCO) 1
C2- R1O
6 11 A1 A2
V- T1I
7 10
T2O
T2I
8 9
T2I R2O
R71
10
Q1
D1
2SC4116-GR
DA221
L2
0.33 H
Q5
2SA1586-GR
R72
10
Q2 J2 P2
D2
2SC4116-GR
W2
DA221
L3
W1
0.33 H
W3
W4
Q6
2SA1586-GR
R73
10
Q3
D3
2SC4116-GR
DA221
L4
0.33 H
Q7
2SA1586-GR
R74
10
Q4
D4 2SC4116-GR
DA221
L5
0.33 H
Q8
2SA1586-GR
CTRL2 BOARD
J7
GND
GND
L45
PFSK
10 H
8V 8V
STB2 R140 1k STB2
STB1 R141 1k STB1
CON2 R142 1k CON2
to
CON1 R143 1k CON1
MAIN
CON0 R144 1k CON0
unit
J9 DRST R145 1k DRST
STB3 R146 1k STB3
DATA R147 1k DATA
CK R148 1k CK
13.6
L42
13.6
EXC-ELDR25C
13.6
R10
22
IC3
11.8 V 5.3 V
TA7805F
1 2
I O
G
3
J1
IC8
TC7SU04F
J2
PFSK 5
4 2
R121
2k 3 R11 C2
100 0.0
R123
2k
R125
2k
R127
2k
12
VSS
13
DA0
R129
14
2k DA1
15
DA2
16
DA3
17
IC2
DA4
R131
SC-1287
18
2k VSS
19
DA5
20
DA6
21
DA7
R133
22
2k DA8
R135
2k
R137
2k
R139
2k
J3 R53 L40 C129 L38 L37
P3 39 3.3 H 0.0047 10 H 8.2 H
BFO
to
MAIN unit C157 C155
J5 5p 9p
PLL UNIT