Kenwood TK-290-11B Service Manual page 39

CONTROL UNIT (X53-3932-71) (A/6)
CN1
CN401
Q6
1
Q7 2
LAMP 3
MAN D 4
SD TO
5
MUTE 6
SP- 7
SP+ 8
AFE 9
AFE
10
AF 11
MIC 12
MICE 13
5CM 14
SB 15
SB
16
E 17
DATA 18
CLK 19
5TB 20
N/CSW
21
PTT 22
LCS 23
KEY2 24
KEY1 25
DGND 26
KES
27
NC 28
INAFC 29
EXAFC 30
AMPSW 31
OPPTT
32
TCONT 33
C1
470p
C2
470p
R1
27k
Q6
AF AMP POWER
7.4V SUPPLY SWITCH
L6
C10 1000p
Q6
2SB798AZ(DL,DK)
AVR
POWER SUPPLY
SWITCH CONTROL
Q5
2SC4617(S)
R:4.8V
T:0V
SHIFT
REGISTER
R6 0 IC2
BU4094BCFV
R7 0
1 STRB
2 DATA VDD
R8 0
OE
3 CLK
Q5
4 Q1
5 Q2 Q6
6 Q3 Q7
7 Q4 Q8
R63
Q'S
8 VSS
QS
0
R22
1k
R23
1k
CP1
D19,20
47k*2
REVERSE CURRENT
PREVENTION
R10 D19
5.6k MA2S111-F
R9 D20
5.6k MA2S111-F
L2
L1
R12 1k R13 47k
R14 C43
AUDIO
5.0V
MUTE SWITCH
100k 470p
SIGNAL OFF
Q8
2SK1824-A
L9 C14
R17 R4 0.1u
47k 47k
RE:0V
C12
RI:4.8V INT.AUDIO
MUTE SWITCH
T:0V
0.47u
RE:0V
RI:2.0V
T:0V
Q7
RE:4.8V
2SK1824-A
RI:0V
T:0V
R18 R5
47k 47k
RE:2.0V
RI:0V
T:0V
Q15
2SK1824-A
EXT.AUDIO
MUTE SWITCH
MAN_D MAN_D
TCONT TCONT
OPPTT OPPTT
REVERSE
16
CURRENT
15
PREVENTION
14
13
12 D16
11
IMN10
10
9
IC4
5.0V
TC7SH08FU-F
4
OUTY GND
INA
5CM 5CM 5
VCC INB
IC5
TC7SH08FU-F
4
OUTY GND
INA
5
VCC INB
IC6
TC7SH08FU-F
4
OUTY GND
5.0V
INA
5
VCC INB
OPTION BOARD
EMABLE SELECTOR
5CM 5CM
CLK CLK
LCS LCS
PTT PTT
AUDIO POWER
AMPLIFIER
IC1
TDA7053AT
1 16
NC1 OUT1+
2 15
VC1 NC4
3 14
NC2 PGND1
4 13
VI<1> OUT1-
5 12
VP OUT2-
6 11
VI<2> NC3
7 10
SGND PGND2
8 9
VC2 OUT2+
AFE AFE
N/CSW N/CSW
MICE MICE
X53- (B/6)
INVERTER
IC10
TC7W04FU-F
1 8
1A VCC
2 3Y 7
1Y
3 2A 6
3A
3 4 5
GND 2Y
2
1
3
2
1
X53- (F/6)
3 S1
2
TOGGLE
1
SW
IC4-6
MONITOR
D12 MA2S111-F R45 1k
CN3
R46 1k
E40-6467-05
R47 1k
6
5
PTT
4
D13 MA2S111-F R48 1k
3
2
D15 MA2S111-F R49 1k
1
TONE 1
D12,13,15
REVERSE CURRENT
PREVENTION
TONE 2
L3
R64
0
C19
0.47u
R30 C32
22k 0.47u
MIC NOISE
CANCELING
CIRCUIT
5.0V
L7
IC3
R35 C30
NJM2904V-ZB
L4
10k 0.47u
1 8
AOUT V+
2 7
A-IN BOUT
L8
3 6
A+IN B-IN
R32
4 5
B+IN
GND
68
NOISE CANCELLING SWITCH
LCD
32 17
33
16
S33
S16
S34 S15
S35 S14
S36
S13
S37
P12/S12
IC101
S38
P11/S11
LC75824W
S39 P10/S10
S40 P9/S9
S41 P8/S8
LCD DRIVER
S42
P7/S7
S43
P6/S6
S44 P5/S5
S45 P4/S4
S46 P3/S3
S47 P2/S2
S48 P1/S1
1
48
49 64
D102,103
LCD
BACKLIGHT
D101
R106
SPEED UP
A
270k
D101
1SS373F C104 R102 R103
R101
100p 10k 10k
100k
R104
A
10k
C105
100p
5.0V
TX BUSY
L101 D104
LED
B30-2019-05
A
CN101
CN400
TX-RX UNIT
(X57-6132-70)
CN4
E41-2539-05
1
INT SP.
2
MIC1
INT MIC
(MAIN)
R44 47k
MIC2
INT MIC
Q14
UMC4N (N/C)
N/CSW