Kenwood TK-8302 Service Manual page 47

Z
X57-7680-XX R933 R934
-23 TK-8302 M2 0 NO
-15 TK-8302H K2 NO 0
TX-RX UNIT (X57-7680-XX)
SB
C889 470p
12
C704 470p
C706 470p
C708 470p
5C
D702,704,706
SURGE
PROTECTION
D704
DA221
D706
DA221
12
5M D702
DA221
SB
5C
PA
DETO
DATAI
12
12
IGN
13
MIC
8
ME
AA
SCHEMATIC DIAGRAM
DISPLAY UNIT (X54-3670-20)
J1
8 DM
7 HOOK
6 MIC
5 ME
4 PTT
3 GND
2 SB
1 MBL
INT SP
CN724 CN1
1 SB 30
SB
2 29
SP+
3 28
SP+
4 SP+ 27
SP-
5 26
12
SP-
6 SP- 25
R981 0
7 LEDM 24
LEDM
R982 0
8 MBL 23
MBL
R983 0
9 RLED 22
RLED
R984 0 GLED
10 21
GLED
R985 0 11 BLED
20
BLED
R986 0
12 KMO1 19
KMO1
R987 0
13 KMO2 18
KMO2
R988 0
14 KMO3 17
KMO3
R989 0 KMI1
15 16
KMI1
R990 0 16 KMI2
15
KMI2
R991 0
17 KMI3 14
KMI3
R992 0
18 5C 13
R993 0
19 LEDI 12
LEDI
R994 0 LECE
20 11
LECE
R995 0 LECL
21 10
LECL
R996 0
22 LELH 9
LELH
R997 0
23 LERE 8
LERE
24 GND
7
8
R856 MIC
25 6
0
26 ME 5
R857 1k
HOOK 27 HOOK/RXD 4
/RXD
R855
28 PTT/TXD 3
PTT
/TXD
100
R858
3.3k MKEY
29 2
MKEY
R998 30 POWER 1
POWER
0
8
J700
6
FNC 1
1
11
FNC 6
*R934
*R933
7
FNC 2
2
12
8
FNC 3
3
HR1 13
9
FNC 4
4
HR2 14
10
FNC 5
5
15
Q9
C886
LED DIMMER
1000p
CONTROL SWITCH
Q724
2SJ645
R888
47k
13
8
HORN ALERT
CONTROL
SWITCH
Q725
KTC4075E(Y,GR)
R890
HORN
Note : The components marked with
1K
AB
TK-8302/8302H
D1-5
KEY BACKLIGHT 4.06V
DM
HOOK D1 D2
B30-2282-05 B30-2282-05
MIC
R37
10
ME D3 D4
B30-2282-05 B30-2282-05
PTT
D5 1.90V
14
B30-2282-05
R1
100
D20
DA221
VOLTAGE
PROTECTION
SB
14
Q5 R36
2SC3928A 8.2k
R34
1k
RLED
LED DIMMER
CONTROL
GLED
SWITCH
IC1
15
BLED
R6 1k
KMO1
R7 1k
KMO2
R8 1k
KMO3
R3 1k
KMI1
R4 1k
KMI2
R5 1k
KMI3
L1
LEDI 16
15
LECE
LELH
LEDI
LECL
LECL
LELH LECE
14
MIC
ME
HOOK
PTT
DM
15
SURGE
PROTECTION
Q1,2,7,8
TX/BUSY
INDICATION
LED SWITCH
D22
INDICATION
Q7
RT1P141U
Q1 Q2
RT1N441U RT1N441U
4.93V
BUSY :
4.54V
R42
1k BUSY :
2.32V
Q9
2.79V
2SC3928A
Q6
2SC3928A
Q6
INDICATION
LED SWITCH
•
a dot ( ) are parts of layer 1.
AC
13.53V
Q3,4
R10
KEY BACKLIGHT
CONTROL SWITCH
1k
4.08V
Q3
KRA225S
R11
SB
1k
R12
1.2k
Q4
KRC102S-P
LED
DISPLAY
4.94V
LED
DRIVER
CP1 1k
16
KMO1
16
B A
KMO2
CH
UP
KMO3
VOL VOL
Q8
DN UP
RT1P141U
T : 4.65V
T : 1.87V
D23
B30-2151-05
TX/BUSY
INDICATION
X57-768 6/6, X54-367 1/1
AD
1
2
3
4
S
C
5
CH
DN
6
7
47