47
SCHEMATIC DIAGRAM
TK-7302/7302
(
V
)
/7302H/7302H
(
V
)
X57-76
8
6/6, X54-367 1/1
7
6
5
4
3
2
1
AD
AC
AB
AA
Z
4.93V
2.79V
4.54V
2.32V
T : 4.65V
T : 1.87V
BUSY :
BUSY :
4.06V
13.53V
4.08V
1.90V
4.94V
16
15
16
14
16
15
15
14
14
12
12
12
12
12
8
8
8
8
13
13
DISPLAY UNIT (X54-3670-20)
TX-RX UNIT (X57-7680-XX)
C43
470p
R6 1k
R7 1k
R8 1k
R4 1k
R3 1k
R5 1k
LEDI
LECE
HOOK
1000p
R42
100p
C27
R29
10k
R28 10k
C47
C38
100p
2
1
5
4
3
LELH
8
7
6
C42
100p
12
11
LECL
9
10
14
13
15
18
17
16
22
RLED
BLED
GLED
21
20
19
24
23
KMI1
KMI2
KMI3
R21
2.2k
R41 2.2k
2SC3928A
Q6
Q9
2SC3928A
1k
R22
82
B30-2151-05
DN
VOL
120
R23
D23
UP
CH
KMO3
0
RT1N441U
Q7
B30-2321-05
RT1N441U
0
R27
D22
R26
Q1
RT1P141U
GLED
BLED
MLED
Q8
Q2
RT1P141U
B
KMO2
KMO1
UP
VOL
DN
CH
C
S
A
MIC
02DZ6 2F-Y
D33
C39
CM
100p
ME
PTT
C29
1000p
C30
1000p
LECE
1000p
C31 1000p
C32 1000p
C33
C35
1000p
CP1 1k
LELH
LEDI
LECL
oUT14
oUT1
g1
TCA62746AFNAG
SLA
T
SCK
GND
oUT0
KMI1
KMO1
KMO2
KMO3
L1
KMI2
KMI3
0.01u
C16
470p
CN2
C46
f1
R40 10
5
3
4
2
1
SIN
6
2SC3928A
C36 1000p
MLED
1k
R34
C34
1000p
oUT15
SoUT
VDD
REXT
IC1
22k
R35
8.2k
20
22
21
23
24
oE
19
oUT7
oUT5
oUT3
oUT4
oUT2
oUT6
a2
b2
b1
a1
f2
dp2
11
10
12
9
7
8
oUT8
oUT10
oUT9
oUT12
oUT13
oUT11
13
15
14
16
18
17
C44 470p
28
27
25
26
CN1
29
30
100p
C41
10
R38
MBL
1
J1
ME
PTT
4
5
SB
2
3 GND
CM
8
MIC
6
7 HOOK
1000p
100p
R39
C8
Q5
C45 470p
15
1000p
0.01u
C10
C9
R36
C40
R1
R2 10
100
C1
0.01u
D20
DA221
B30-2282-05
HDSP-521A
d1
c1
dp1
e1
Q4
KRC102S-P
D37
dp2
dp2
g2
e2
d2
c2
Q3
KEY BACKLIGHT
B30-2282-05
B30-2282-05
ME
10
PTT
D4
D3
B30-2282-05
D5
CM
R37
HOOK
MIC
D2
D1
B30-2282-05
g1
f1
a1
b1
1k
R12
1.2k
b1
g1
a1
f1
KRA225S
R10
1k
R11
b2
a2
f2
b2
f2
a2
dig2
dig1
1
6
11
12
2
7
13
3
8
14
4
9
15
5
10
J700
EXTERNAL D-SUB
1000p
C886
47k
R888
1000p
C885
220
R889
1K
R890
*R934
*R933
Q724
2SJ645
HORN ALER
T SWITCH
Q725
KTC4075E(Y,GR)
FNC 2
FNC 1
FNC 6
FNC 3
FNC 4
FNC 5
POWER
PTT/TXD
HOOK/RXD
MKEY
ME
LECL
GND
LELH
MIC
KMI1
KMI2
KMI3
LECE
LEDI
5C
BLED
KMO3
KMO2
KMO1
SP-
GLED
LEDM
RLED
MBL
SP-
SP+
SP+
SB
SB
R998
POWER
30
3.3k
MKEY
29
R855
PTT
28
R857 1k
/RXD
27
26
R856
25
24
R997 0
LERE
23
R996 0
LELH
22
R995 0
LECL
21
R994 0
LECE
20
R993 0
LEDI
19
R992 0
18
R991 0
KMI3
17
R990 0
KMI2
16
R989 0
KMI1
15
R988 0
KMO3
14
R987 0
KMO2
13
R986 0
KMO1
12
R985 0
BLED
11
R984 0
GLED
10
R983 0
RLED
9
R982 0
MBL
8
R981 0
LEDM
7
0
100p
C950
6
5
4
3
1
2
LERE
DA221
D702
DA221
D704
D706
DA221
HR2
HR1
CN724
0
R858
100
C887
C889 1000p
C704 1000p
C706 1000p
C708 1000p
C898
C915 1000p
1000p
1000p
IGN
HORN
SP+
SP-
SP2
SB
ME
MIC
5C
SB
SB
SB
5C
DATAI
DETO
INT SP
M
-20
X57-7680-XX
R933
R934
0
NO
-21
M
0
NO
-11
K
0
NO
-12
K
NO
0
-16
K
0
NO
RLED
5C
5M
HOOK
/TXD
TK-7302
TK-7302H
TK-7302(V)
TK-7302H
TK-7302H(V)
SURGE
PROTECTION
D702,704,706
SWITCH
CONTROL
HORN ALERT
LED
DRIVER
IC1
CONTROL
LED DIMMER
SWITCH
PROTECTION
SURGE
INDICATION
LED SWITCH
INDICATION
TX/BUSY
INDICATION
TX/BUSY
Q1,2,7,8
LED SWITCH
CONTROL SWITCH
KEY BACKLIGHT
Q3,4
VOLTAGE
PROTECTION
INDICATION
DISPLAY
LED
Q6
D22
CONTROL SWITCH
LED DIMMER
Q9
D1-5
Note : The components marked with
a dot (
•
) are parts of layer 1.