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F
TX-RX UNIT (X57-7012-72) (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
4KEY BOARD
(X57-7012-72)(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
TK-3170
A
B
C
E29-1205-X4
SEL
D24-27
KEY
INPUT
DETECT
2
3
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
15
2
DATA
OE
3
14
CLK
MMUTE
4
13
5MSC
LCDBL
5
12
SAVE
QTSW
11
6
STSW
AQSFT
7
10
AM1
Q'S
8
9
VSS
QS
C44
0.01u
RESET
INT
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
SFTSTB
CLK
DATA
BATT
VOXMUTE
OPST
MMUTE
AQSFT
SP_M
STSW
5TC
5MS
SB
5R
5C
5T
SSB
5RC
27
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