PAGE -44-May 2001 Digital Schematic1
2
3
4
5
6
7
8
9
10
11
12
VOLUME
P/S 5V
386 EN
N/S SW
SPK
CHARGE
PWR H/L
ALERT
AUDIO
PLL EN
LOCK D/T
RX EN
TX EN
BUSY
CLOCK
DATA
TCXO
MOD
TX 5V
1.DATA
2.CLOCK
4.+7.5V
7.GND
8.MIC+
10.INT_SPK_MIC_DSBL
11.SPKR+
X0
12
X1
13
Y0
2
Y1
1
Z0
5
Z1
3
INH
6
A
11
B
10
C
9
X14
Y15
Z 4
16
7
8
IC411
N
.
I
N
V
2
1
V
O
2
2
F
O
U
T
3
V
O
1
4
A
G
N
D
5
V
C
C
6
V
O
S
A
D
J
7
F
I
N
8
C
L
K
9
G
N
D
1
0
C
L
K
R
1
1
L
.
S
H
1
2
I
N
V
1
1
3
I
N
V
2
1
4
IC407
MF6-100
CS
1
SK
2
DI
3
DO
4
VCC 8
N.C 7
ORG
6
GND 5
11 10
1
2
G
R
N
7
8
DATA
1
EEP EN
2
PLL EN
3
ALART
4
DATA IN
5
RED LED
6
BUSY
7
MONITOR
8
EXT
10
TEST
11
X1
12
X2(OPEN)
13
GND
14
ENCODE1
15
ENCODE2
16
17
ENCODE3
18
CH1
19
3
23
33
43
53
63
73
83
94
0
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
6
1
6
2
6
3
6
4
6
5
6
6
6
7
6
8
6
9
7
0
7
1
G
N
D
7
2
V
C
C
7
3
O
S
C
1
7
4
O
S
C
2
7
5
R
E
S
E
7
6
3
8
6
7
7
LOW BATT
9
C
H
4
2
1
CH2
20
C
L
K
8
0
C
H
8
2
2
N
/
S
S
W
2
3
P
T
T
2
4
L
O
C
K
D
E
T
2
5
T
X
E
N
2
6
C
L
O
N
E
S
W
E
N
2
7
M
F
6
C
L
K
2
8
C
A
L
L
D
E
T
2
9
F
A
S
T
3
03
1
41
R
X
E
N
7
9
IC409
HD4074818P
PWR H/L
MONITOR
PTT IN
CALL LED
BUSY/SQ
CALL
RX AUDIO IN
ALERT TONE OUT
N/C AUDIO OUT
TX TONES
MIC CONTROL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
VCC
AUDIO MUTE
TX ENABLE
7.5V
LINK TABLE (0R)
NORMAL
LK1LK2 LK3 LK5LK4 LK6 LK7 LK8 LK9LK12
N/F FIT FIT FIT FIT N/F FIT N/F N/F FIT
LK14LK15LK16 LK17 LK18 LK19LK20
N/F N/F FIT N/F N/F N/F N/F
LK21LK22
N/F N/F
VHF/UHF TABLE
VHF
UHF
33K
18K
R486R459
10K
1.2K
R493
22K
22K
R478R479R480
39K 20K 10K
200K100K 51K
PTT SCHEMATIC
P/N:480-042-0028
REVISIONS
CHG BY
DATE
DESCRIPTIONDESCRIPTIONREV
TITLE
SCALE SHEET
OF
SIZE
DOCUMENT
NUMBER B
11
NA
C485
470P MIC1
C-MIC
D407
5.6V
C483
470P C136
100/6V
+
+
Q701
2SK1579
C701
100/6V
C421
220P
CON406
ST
C484
470P
SP1
2 OHM/1W
R435
6.8K
R482
N/F
LK6
LK7
R489
4.7K
C413
470P
C430
0.1
R490
2.2K
ST
R457
22K
R481
N/F
LK15 LK14 SWB+
R426
1.2K
R428
10K
C422
0.01
R425
220K
IC402D
MC14066BD
10 11
1
2
CLOCK
RV401
47KB
R459
10K
*
5V
81
IC405A
LM358
3
2
4
+
-
5V
IC401A
MC14066BD 1
4
2
1
1
3
R401
680K
C405
0.001
R408
22K R486
18K
67
5
-
+
*
IC405B
LM358
R493
22K LK2 LK5
8
7
6
9 DATA
IC402C
MC14066BD
R471
30K
C436
0.022(K)
5V
4
D701
5.6V
R701
2.2K
R483
R469
2.2K
2.2K
R9
R9A
68
68
Q412
KRA104S
(PD)
R456
22
Q413
KRC104S
(ND)
ST
ST
7.5V
R702
12K
R703
12K
R704
100K Q702
KTC3875
CON701
12 HEADER
C420
220P
5V
IC402B
MC14066BD
14
4
5
3
C419
220P
C418
220P
D405
5.6V
D406
5.6V
2
31
-
+
IC406A
KIA324F
R472
36K
R470
30K
C435
0.1(K)
R427
100K
IC406B
KIA324F
76
5
+
-
43
R422
47K
5RV403
47KB
R400
11K
10K
R414
C400
0.0068
R424
10K
R429
27K
R423
1.2K
Q401
KRA110S
(PK) 5V
IC401B
MC14066BD
Q416
KRA110S
(PK)
+
C478
10/4
C477
470P
C442
0.022(K)
42
1-
C472
0.001
+C431
4.7/10
C44
0.01
D401
KDS181
(A3) 14053
IC401C
MC14066BD 6
8
7
9
R432
4.7K
C462 R439
0.047U(K) 3K
C463
0.047U(K)
IC410B
KIA324F
R440
4.7K
R441
3.9K
-
+
67
5
C464 C465
0.033U(K)
0.033U(K)
4
2
31
R442
27K
IC410A
KIA324F
-
+
IC410C
KIA324F
R446
820 9
10 8
1
1
-
+
C469
0.047U
(K)
R451
10K
IC410D
KIA324F
13
12 14
C468
0.033U
(K)
R443
2.4K
C467
0.033U
(K)
C466
0.033U
(K)
-
+
98
10
1
1
IC406C
KIA324F
-
+
C456
120P
R477
120K
R476
360KR
C455
0.082U
R487
120K
C454
0.68U
C476
0.1
R406
8.2K
C404
0.047(K)
R407
N/F
R404
8.2K
C443
0.0047
6
5
C446
47P
-
+
IC404B
KIA324F
R403
8.2K
R430
220K
7
R402
8.2K
C448
47P
C441
0.0018
3
+
R411
270K
IC404A
KIA324F
R412
22K
C449
0.033(K)
C406
0.1
13
12
14
-
+IC404D
KIA324F
C447
0.015 R410
3.3K 9
10
8
-
+
R405
100K
1
1
R409
220K
IC404C
KIA324F
RV402
22KB
Q402
N/F
R473
43KR C452
0.1U(K)
R475
47K
R474
43KR C453
0.0033(K)
5V
R450
33K
C437
1UF R449
20K
13 14
12
-
+
IC406D
KIA324F R485
220K
C427
0.001
C474
1UF
SWB+
R444
82K R447
220K
C471
0.1(K) R452
2.2K
C470
1UF
R453
1M
R200
1.2K
Q405
KRC104S
(ND)
R100
470R
Q404
KRC104S
(ND)
LK18
LK16
D404
KDS184
5V
L410
10UH
C423
10/6.3
+
R484
4.7K
R461
1M
R464
4.7K
Q410 KRA104S(PD)
C459
0.1
C458
0.1U(K)
IC408
93C56
LK3
C438
470P
R488
0
D403
KDS193
(F3)
5V R416
10K
R417
2.2K SWB+
R431
47K TX5V
IC401D
MC14066BD
5V
Q417
KTA1504S
(ASY)
C432
470P
Q403
KRC104S
(ND)
CON404
14 PIN
C439
470P C434
0.1
C425
470P
C426
470P
C424
470P
Q406
KRA101S
(PA)
Q407
KRC101S
(NA)
LK4
LK1
D402
KDS181
(A3)
R415
47K
LK8
LK19
LK20
5V
R460 47K
R433
R434
47K
47K
R495
N/F
R454
22K
5V
R421
R478
R479
R480
47K
200K*
100K*
51K*
C460
15P
C461
15P
X401
3.579545MHz
CH404
BCD ENCODE SW
4/16CH
C481
470P
C482
470P
C480
470P
C479
470P
LK17
LK22
Q411
KRC104S
(ND)
LK9
R418
LK21
LK12
C416
470P
560
C414
470P
C415
470P
C428
470P
C433
470P
SWB+ CON401
LED1
RED
GRN