Kenwood TK-3170 Service Manual page 61

F
TX-RX UNIT (X57-7010-XX) (B/4)
B38-0901-05
SEL
VOLIN
37
L15 38
5MS
39
C40 470p
40
R42 10k
41
C38 0.047u
R43 10k
42
C39 0.047u
R44 10k
43
C42 680p
44
R36 43k
45
LCDINH
46
LCDCE
47
LCDCLK
48
LCDDAT
5MSC
SAVE
RESET
INT
LEDR
LEDG
BATT
SSBC
5M
5TC
5MS
SB
5R
5C
5T
SSB
LCDBL
5RC
G
SCHEMATIC DIAGRAM
24
S24
COM3
23
COM4 S23
22
VDD S22
21
VLCD S21
20
VLCD1 S20
LCD DRIVER
19
VLCD2 S19
IC6
18
LC75834W
VSS S18
17
oSC S17
16
INH S16
15
CE S15
14
CL S14
13
DI S13
ON:5V
OFF:0V
H
TK-3170/3173
4KEY BOARD
(X57-7010) (D/4)
S
E29-1204-X4
KEY4O
KEY3O
KEY2O
1
KEY1O
4
7
*
CP32
1k*4
S24
S23
S22
S21
CP34
1k*4
S20
S19
S18
S17
CP36
1k*4
S16
S15
S14
S13
STSW
SSBC
I J
A B C
E29-1205-X4
SEL
D24-27
KEY
INPUT
2 3 DETECT
D24
KEY1I
MA2S111
5 6
D25
KEY2I
MA2S111
8 9
D26
KEY3I
MA2S111
#
0
D27
KEY4I
MA2S111
NARROW
WIDE
DMUTE
SHIFT REGISTER
IC4
BU4094BCFV
1 16
STRB VDD
2 15
DATA
OE
R37
3 14
CLK
VOXMUTE
4 13 10k
DMUTE
OPST
5 12
SSBC RX RX
6 11
WIDE TX TX
7 10
NARROW
Q'S
8 9
VSS
QS
C43
0.01u
R40
47k
SHIFT REGISTER
IC5
BU4094BCFV
1 16
STRB VDD
2 15
DATA OE
3 14
CLK MMUTE
4 13
5MSC
LCDBL
5 12
SAVE QTSW
6 11
STSW AQSFT
7 10
AM1 Q'S
9
8
VSS
QS
C44
0.01u
RESET
LEDR
LEDG
ON:0V(Lo)
OFF:4.8V(Hi)
5M
LCDBL
X57-701 (B/4) 2/6, X57-701 (D/4) 1/1
TX
VOLIN
SFTOE
RESET
INT
LEDR
LEDG
5M
INT
SFTSTB
CLK
DATA
BATT
VOXMUTE
OPST
MMUTE
AQSFT
SP_M
STSW
5TC
5MS
SB
5R
5C
5T
SSB
5RC
59