Icom IC-7851 Servise Manual page 176

CTRL UNIT (CTRL-1)
R13
1.8k IC3
1
OUT CD
R15
2
VDD
3
5.6k
VSS NC
S-80851CNMC
R2
47k
FOR
FOR Q64
REF LMUN5211
REF
R
R
P
P
CP1
HK3-S-T
CP2
R8
47k
CTRL-2
+5VL
TRC
+15VL
VDD1R5
-12VL
T8V
FORL
REFL
ANTI
VHF
C40
0.1
IC6
R40
4 3
1K
2
5 1
SN74AHCT1G08DCKR
EP401
MPZ1608S221A
J51
EP14
1
MPZ2012S331A
2
T3R5M
3
T5M
4
T7M
5
T10M
6
T14M
7
T18M
CTRL-2
8
T24M
9
VHF
10
GND
EP15
11
MPZ2012S331A
FANC
12
+15V
13
+15V
14
CO3
15
CO2
16
CO1
17
VHCO
18
VHCI
19
CI3
20
CI2
21
CI1
22
23
24
EP16
MPZ2012S331A
TCALV
THRU1
THRU2
THRU1_
5
4
CI2
CI2
CI1 33
CI1
34
AUXCTL
PWRS 35
PWRS
36
TXD1
37
RXD1
38
SETI
39
AUXR IC1
40 R5F212A7SNFP(SX-3073B-2)
AUXT
41
5M
L5M
3R5M 42
L3R5M
24M 43
L24M
44
7M
L7M
45
RxENB
46
STNG
47
MTN
48
FOR
REF
R
P
MP1
+5VL
TRC
+15VL
SETI
VDD1R5
THRU
-12VL
T8V
FORL
REFL
ANTI
VHF
C436
0.1
EP402
MPZ1608S221A
C418
C420 10
IC402 0.1
GND VCC
10 9 3R5M
O8 I8
11 8
O7 I7
12 7 5M
O6 I6
13 6
O5 I5
14 5
7M
O4 I4
15 4
O3 I3
16 3 10M
O2 I2
17 2
O1 I1
R409 22 18 1
62783G
R410 22
R411 22 C435
0.1
22
R412 IC403
R413 22
GND VCC
R414 22 10 9 14M
O8 I8
11 8
R415 22
O7 I7
R416 22 12 7 18M
O6 I6
13 6
O5 I5
14 5
24M
O4 I4
15 4
O3 I3
16 3 VHF
O2 I2
17 2
O1 I1
18 1
62783G
C417
C419 10
IC401 0.1
GND VCC
22 10 9 CO3
R401
O8 I8
R402 22 11 8 CO2
O7 I7
R403 22 12 7 CO1
O6 I6
22 13 6
R404 NVHF
O5 I5
R405 22 14 5
O4 I4
R406 22 15 4 CI3
O3 I3
16 3
R407 22 CI2
O2 I2
R408 22 17 2 CI1
O1 I1
18 1
62783G
Selected 13.6 V
9-33
v
IKEYB IKEY
19.69 MHz (50.8 ns)
Q11
LMUN5211
L3 +5VL
100U
R12
2.6 V
10k IC5
R11
4 3
1k
2
ISTAB
C73
5 1
0.1
SN74AHCT1G08DCKR
R14
100K MODE
RESET
RZ
16 TRC
SEND
EP403
15
ANTI
ANTI
14 CP3 MPZ1608S221A
STOK
13 THRU
THRU
12 NVHF
NVHF
11
VCC/AVCC
10 C12
XIN
9 12P
VSS/AVSS
8
XOUT
7
RESET
6 C9
E2E2SDA
5
12P
E2SCK 5.0
4 R37
MODE
3 4.7k 14M
L14M
0.0
2
10M
L10M
1
L2 +5VL
100U
C10
0.1
IC2 TRC
8 1
VCC A0
LMUN5111
7 2
WP A1
6 3
SCL A2
5 4
VSS
SDA
5.1
BR24L32FV
R86
Q22
0
LMUN5211
MP2
2590
2427
CONTROL
VOLTAGE
FREQUENCY
SIGNAL
0.03-2M LPF1 12.7V
2-4M LPF2 12.7V
4-5.8M LPF3 12.7V
5.8-8M LPF4 12.7V
8-12M LPF5 12.7V
12-15M LPF6 12.7V
15-22M LPF7 12.7V
22-30M LPF8 12.7V
30-60M LPF9 12.5V
IC51
1
2
CONDITION VOLTAGE 3
ANT4R ANT4:RX-ONRY 0.0 V TC7S14FU
THRU1 TUNER:ON 12.4 V
THRU2 TUNER:ON 12.4 V
3.5 Vp-p
t TUNER:OFF 15.0 V
L5
+15VL
100U
Q3
LMUN5211
PW
Q4
LMUN5211
PX
Q5
LMUN5211
PY
Q6
LMUN5211
Q2
Q1
LMUN5211
PZ
Q7
8.1
LMUN5211
RW
0.0
Q8
LMUN5211
IC4
RX
NJM7805DL1A
Q9
D1
LMUN5211
O I
RY
RR264M
G
Q10
LMUN5211
RZ
15.0
-11.6
3.3
+15VL EP5 MPZ2012S331A
VDD1R5
THRU
EP6 MPZ2012S331A
+3R3VL EP7 MPZ2012S331A
T8V EP8 MPZ2012S331A
DRESH
FSTB
SETI R19
0
TDAT
TCK
TCALV
ISTAB
IKEY
L51
100U
R67
10
R68
10
R69
10
0.1
C68
C66
10 IC57
IC55 LPF2 1 18
I1 O1
16 1 2 17
LPF8
VCC QB I2 O2
15 2 LPF4 3 16
QA QC I3 O3
14 3 LPF7 4 15
SI QD I4 O4
13 4 5 14
LPF3
G QE I5 O5
12 5 LPF6 6 13
RCK QF I6 O6
11 6 LPF9 7 12
SCK QG I7 O7
10 7 8 11
LPF5
SCLR QH I8 O8
9 8 9 10
QH' GND VCC GND
SN74AHC595PW 62783G
C70
0.1
C72
10
C69
0.1 IC58
1 18
IC56 LPF1
I1 O1
16 1 ANT4R 2 17
VCC QB I2 O2
15 2 3 16
QA QC I3 O3
14 3 4 15
SI QD I4 O4
13 4 5 14
G QE I5 O5
12 5 6 13
RCK QF I6 O6
11 6 7 12
SCK QG I7 O7
10 7 8 11
SCLR QH I8 O8
5 9 8 9 10
QH' GND VCC GND
62783G
SN74AHC595PW
4
C71
0.1
*: Refer to the PARTS LIST for the value and name of component.
J2
T15V
1
PW
2
PX
3
PY
4
PZ
5
TO MF1/MF2
T15V
6
RW
7
RX
8
RY
9
RZ
10
J1
+15V
1
+15V
2
+15V
3
GND
4
GND
5
R345 10K GND
6
-12V
7
+3R3V
8
T8V
9
R23 470 FORV
10
R24 1K REFV
11
GND
12 TO LOGIC J1401
DRESH
13
FSTB
14
SETI
15
TDAT
16
TCK
17
GND
18
TCALV
19
EP9
GND
20
MPZ1608S221A ISTA
21
IKEY
22
THRI
23
EP10
VDD1R5
24
MPZ2012S331A
1.5
J52
F50M LPF9
10
F7M LPF4
9
R70 4.7 F10M LPF5
8
R71 4.7 F24M LPF8
7
R72 4.7 F14M LPF6
6
R73 4.7 F18M LPF7
TO FILTER J902
5
R74 4.7 F5M LPF3
4
R75 4.7 F3R5M LPF2
3
R76 4.7 F2M LPF1
2
R77 4.7
1
R78 4.7 J53
+15V
8
ANT4R
7
- -
Q55 OE
LMUN5211 6
DATA
5
TO FILTER J905
CK
4
R84 22 STB
3
R85 22
2
1